# Blues Developer Documentation > Blues makes wireless IoT connectivity simple: Notecard is a system-on-module that adds cellular, satellite, LoRa, or WiFi connectivity to any product, and Notehub is the cloud service that securely routes Notecard data to your cloud application. This file indexes the Blues developer documentation. Every page listed below links its plain-markdown version. The same convention works site-wide: append `.md` to any documentation page URL (for example `/quickstart/notecard-quickstart/` has a markdown twin at `/quickstart/notecard-quickstart.md`). ## Start Here - [Blues Docs](https://dev.blues.io/docs.md): Guides, tutorials, and reference documentation for Blues products and services. ## Quickstart - [Quickstart](https://dev.blues.io/quickstart.md): Tutorials to help you get up and running with Blues hardware fast. - [Solution Kit for Cell+WiFi Quickstart](https://dev.blues.io/quickstart/solution-kit-for-cellwifi-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Solution Kit for Cell+WiFi. - [Starter Kit for Cell+WiFi Quickstart](https://dev.blues.io/quickstart/starter-kit-for-cellwifi-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Starter Kit for Cell+WiFi. - [Feather Kit for Cell+WiFi Quickstart](https://dev.blues.io/quickstart/feather-kit-for-cellwifi-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Feather Kit for Cell+WiFi. - [Starter Kit for LoRaWAN Quickstart](https://dev.blues.io/quickstart/lorawan-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Starter Kit for LoRaWAN. - [Starnote for Iridium Starter Kit Quickstart](https://dev.blues.io/quickstart/starnote-for-iridium-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Starnote for Iridium Starter Kit. - [Starnote for Skylo Starter Kit Quickstart](https://dev.blues.io/quickstart/starnote-for-skylo-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first app using a Blues Starnote for Skylo Starter Kit. - [Notecard for Skylo Starter Kit Quickstart](https://dev.blues.io/quickstart/notecard-for-skylo-kit-quickstart.md): Welcome to Blues! In this quickstart tutorial you’ll learn how to build your first satellite-connected app using a Blues Notecard for Skylo Starter Kit. - [Wireless for OPTA Quickstart](https://dev.blues.io/quickstart/wireless-for-opta-quickstart.md): Learn how to set up and use the Blues Wireless for OPTA to add cellular or WiFi connectivity to your Arduino OPTA PLC. - [Notecard Quickstart](https://dev.blues.io/quickstart/notecard-quickstart.md): Learn the Notecard API and sync data between your Notecard and Notehub to build an IoT application using Cellular, Satellite, LoRa, and WiFi connectivity. - [Notecard for LoRa Quickstart](https://dev.blues.io/quickstart/notecard-for-lora-quickstart.md): Learn the Notecard API and sync data between Notecard for LoRa and Notehub to build an IoT application LoRa and LoRaWAN. - [Notecard for Skylo Quickstart](https://dev.blues.io/quickstart/notecard-for-skylo-quickstart.md): Learn how to use Notecard for Skylo and Notehub to build an IoT application with satellite connectivity. - [Starnote Quickstart](https://dev.blues.io/quickstart/starnote-quickstart.md): Learn how to set up and use Starnote with a Notecard for fallback satellite IoT connectivity - [Cygnet Quickstart](https://dev.blues.io/quickstart/cygnet-quickstart.md): Learn how to get up an running with Blues Cygnet, including step debugging with Cygnet using Visual Studio Code and an STLink programmer - [Notecarrier CX Quickstart](https://dev.blues.io/quickstart/notecarrier-cx-quickstart.md): Learn how to get up and running with the Notecarrier CX, including step debugging using an STLink programmer - [Swan Quickstart](https://dev.blues.io/quickstart/swan-quickstart.md): Learn how to get up an running with Blues Swan, including step debugging with Swan using Visual Studio Code and an STLink programmer - [Mojo Quickstart](https://dev.blues.io/quickstart/mojo-quickstart.md): Learn how to get up and running with Blues Mojo, including how to connect your hardware, and how to start measuring energy usage. - [Sparrow Quickstart](https://dev.blues.io/quickstart/sparrow-quickstart.md): Learn how to get up an running with a Sparrow Developer Kit ## Guides & Tutorials - [Guides & Tutorials](https://dev.blues.io/guides-and-tutorials.md): Guides & tutorials for learning Blues hardware and cloud services. - [Host Wiring Guide](https://dev.blues.io/guides-and-tutorials/host-wiring-guide.md): Learn how to wire a Notecard to a host MCU or SBC using I2C or Serial (UART). - [Sensor Tutorial](https://dev.blues.io/guides-and-tutorials/collecting-sensor-data.md): Build an MCU-controlled application that reads from an external sensor and sends readings to the Notecard to start building your IoT application using Cellular, Satellite, LoRa, or WiFi connectivity. - [Routing Data to Cloud](https://dev.blues.io/guides-and-tutorials/routing-data-to-cloud.md): Learn how to connect Blues Notecard applications to third-party cloud services using Notehub Routes and Cellular, Satellite, LoRa, or WiFi connectivity. - [Best Practices for Production-Ready Projects](https://dev.blues.io/guides-and-tutorials/best-practices-for-production-ready-projects.md): A set of best practices for building production-ready wireless IoT projects with Blues Notecard and Notehub. - [Fleet Administrator's Guide](https://dev.blues.io/guides-and-tutorials/fleet-admin-guide.md): Opinionated guide to administering a Blues Notecard fleet on Notehub: organization, provisioning, data handling, firmware, monitoring, and operations. - [Using the Notehub API](https://dev.blues.io/guides-and-tutorials/using-the-notehub-api.md): A short tutorial on how to use the Notehub API to manage your IoT devices and applications remotely. - [Asset Tracking with GPS](https://dev.blues.io/guides-and-tutorials/notecard-guides/asset-tracking-with-gps.md): A guide for building an asset tracking solution with Blues Notecard and GPS/GNSS, communicating over Cellular, Satellite, LoRa, or WiFi. - [Notecard Attention Guide](https://dev.blues.io/guides-and-tutorials/notecard-guides/attention-pin-guide.md): Configuring the Notecard attention pin on the Blues Swan and Notecarrier F. - [Connecting to a WiFi Access Point](https://dev.blues.io/guides-and-tutorials/notecard-guides/connecting-to-a-wifi-access-point.md): Learn how to connect a Notecard WiFi to a WiFi Access Point - [Debugging Notecard with the FTDI Debug Cable](https://dev.blues.io/guides-and-tutorials/notecard-guides/debugging-with-the-ftdi-debug-cable.md): Learn how to use the TTL-232R-RPI debug cable from FTDI to debug a Blues Notecard. - [Encrypting and Decrypting Data with Blues Notecard](https://dev.blues.io/guides-and-tutorials/notecard-guides/encrypting-and-decrypting-data-with-the-notecard.md): A guide for sending and receiving encrypted data through Blues Notecard and Notehub - [Feather MCU Low Power Management](https://dev.blues.io/guides-and-tutorials/notecard-guides/feather-mcu-low-power-management.md): Setting up your Feather MCU to run in low power mode - [Minimizing Latency](https://dev.blues.io/guides-and-tutorials/notecard-guides/minimizing-latency.md): How to configure Notehub.io and your Notecard to minimize latency - [Notecard Communication Without a Library](https://dev.blues.io/guides-and-tutorials/notecard-guides/notecard-communication-without-a-library.md): Considerations and patterns for communication with the Notecard without a library. - [Remote Command and Control](https://dev.blues.io/guides-and-tutorials/notecard-guides/remote-command-and-control.md): A guide to sending commands to one or more Notecards from the cloud over cellular, Satellite, LoRa, or WiFi. - [Sending and Receiving Large Binary Objects](https://dev.blues.io/guides-and-tutorials/notecard-guides/sending-and-receiving-large-binary-objects.md): A guide to both sending and receiving large binary objects using the card.binary APIs. - [Serial-Over-I2C Protocol](https://dev.blues.io/guides-and-tutorials/notecard-guides/serial-over-i2c-protocol.md): Serial-Over-I2C Protocol Guide - [Storing Device State with DB Notefiles](https://dev.blues.io/guides-and-tutorials/notecard-guides/storing-device-state-with-db-notefiles.md): Learn when and how to use DB Notefiles, the var API, and local-only .dbx Notefiles to store and replicate device state between a Notecard and Notehub. - [Understanding Environment Variables](https://dev.blues.io/guides-and-tutorials/notecard-guides/understanding-environment-variables.md): Overview of Environment Variables in Notecard and Notehub and how to integrate them in your IoT application. - [Using External SIM Cards](https://dev.blues.io/guides-and-tutorials/notecard-guides/using-external-sim-cards.md): Setting up your external SIM card to use with Blues Notecard to connect to other cellular networks. - [Using JSONata to Transform JSON](https://dev.blues.io/guides-and-tutorials/notecard-guides/using-jsonata-to-transform-json.md): A brief overview of JSONata and how it can be used in Notehub to transform JSON data routed from your IoT application over Cellular, Satellite, LoRa, or WiFi. ## Notecard - [Notecard](https://dev.blues.io/notecard.md): The hub for documentation on Notecard. - [Notecard Firmware Releases](https://dev.blues.io/notecard/notecard-firmware-releases.md): Blues provides updated firmware releases for Notecard that include feature additions and other improvements. View the release notes for all firmware revisions. - [Notecard Product Family](https://dev.blues.io/notecard/notecard-product-family.md): Learn more about the different Notecard options including functionality by region and network protocol (cellular, WiFi, LoRa, and satellite). - [Overview](https://dev.blues.io/notecard/notecard-walkthrough/overview.md): The Notecard API is a collection of requests for interfacing with a Blues Notecard to build an IoT application with Cellular, Satellite, LoRa, or WiFi connectivity. - [Notecard Requests & Responses](https://dev.blues.io/notecard/notecard-walkthrough/notecard-requests-and-responses.md): The Notecard was designed with simplicity and ease of use as a fundamental goal. As such, the Notecard API exclusively consists of JSON requests to the Notecard and JSON responses from the Notecard. - [JSON Fundamentals](https://dev.blues.io/notecard/notecard-walkthrough/json-fundamentals.md): JavaScript Object Notation, or JSON, is a lightweight format for storing and transporting data of most any kind. It contains 'fields' of your own choosing to convey strings, numbers, boolean values, other JSON objects, and arrays of values - [Notecard Interfaces](https://dev.blues.io/notecard/notecard-walkthrough/notecard-interfaces.md): Requests can be issued to the Notecard over USB, UART, or I2C. The Serial UART interface is fixed at a baud rate of 9600, with eight data bits, no parity bit, and one stop bit (9600/N-8-1). - [Essential Requests](https://dev.blues.io/notecard/notecard-walkthrough/essential-requests.md): When building an embedded IoT application with Blues Notecard, there are a number of essential API requests to know. - [Time & Location Requests](https://dev.blues.io/notecard/notecard-walkthrough/time-and-location-requests.md): Once the Notecard is connected to a cell network or GPS, there are a number of requests available for obtaining the time, location, and using the onboard GPS module for location tracking. - [Inbound Requests & Shared Data](https://dev.blues.io/notecard/notecard-walkthrough/inbound-requests-and-shared-data.md): Learn how to initiate requests from a cloud-based application and send those requests to Blues Notecard using Notehub over Cellular, Satellite, LoRa, or WiFi connectivity - [Web Transactions](https://dev.blues.io/notecard/notecard-walkthrough/web-transactions.md): If your host needs to request or receive data, to or from a 3rd party API or service, the Notecard can facilitate these requests with the web.get, web.put, web.post, and web.delete requests over cellular, WiFi, LoRa, or satellite connectivity. - [Low-Power Firmware Design](https://dev.blues.io/notecard/notecard-walkthrough/low-power-firmware-design.md): Firmware and API techniques for minimizing Notecard power consumption in battery-operated applications. - [Low Bandwidth Design](https://dev.blues.io/notecard/notecard-walkthrough/low-bandwidth-design.md): When building an IoT application that is expected to operate over a long period of time with Blues Notecard, you'll want to ensure that bandwidth is preserved and monitored, wherever possible. - [Working with the Notecard AUX Pins](https://dev.blues.io/notecard/notecard-walkthrough/working-with-the-notecard-aux-pins.md): Learn the various modes for using the Notecard AUX pins in your projects. - [Updating Notecard Firmware](https://dev.blues.io/notecard/notecard-walkthrough/updating-notecard-firmware.md): Learn how to update your Notecard firmware using Notehub, the In-Browser Terminal, STM32CubeProgrammer, or the Notecard CLI. - [Advanced Notecard Configuration](https://dev.blues.io/notecard/notecard-walkthrough/advanced-notecard-configuration.md): The Notecard provides a number of advanced configuration features that you can use to query the state and status of the Notecard, customize its behavior, set its Notehub service location, and configure the available AUX pins for use in your application. ## Notehub - [Notehub](https://dev.blues.io/notehub.md): The hub for documentation on Notehub. - [Notehub Walkthrough](https://dev.blues.io/notehub/notehub-walkthrough.md): A guide to familiarize you with your cloud-based projects in Notehub.io, used to manage your Blues Notecards and applications. - [Host DFU Overview](https://dev.blues.io/notehub/host-firmware-updates/host-dfu-overview.md): Learn how to update your host MCU firmware over cellular or WiFi using Blues Notehub. - [Notecard Outboard Firmware Update](https://dev.blues.io/notehub/host-firmware-updates/notecard-outboard-firmware-update.md): A guide to using Notecard Outboard Firmware Update to perform easily recoverable over-the-air host firmware updates using cellular or WiFi connectivity. - [Using IAP Firmware Update](https://dev.blues.io/notehub/host-firmware-updates/iap-firmware-update.md): Learn how to update your host MCU firmware using Notehub via traditional IAP (In Application Programming) methods. - [Notehub API Requests for DFU](https://dev.blues.io/notehub/host-firmware-updates/notehub-api-requests-for-dfu.md): The Notehub API provides methods for initiating and monitoring over-the-air firmware updates using Blues Notecard. - [Notecard API Requests for DFU](https://dev.blues.io/notehub/host-firmware-updates/notecard-api-requests-for-dfu.md): Notecard offers a set of APIs to help you monitor and manage both host MCU and Notecard firmware updates. - [Environment Variables for DFU](https://dev.blues.io/notehub/host-firmware-updates/environment-variables-for-dfu.md): Certain reserved environment variables are available for scheduling and managing DFU actions. - [Configuring an Amazon S3 Route](https://dev.blues.io/notehub/messaging-and-data-pipelines/configuring-an-amazon-s3-route.md): A guide to creating a Notehub route to an Amazon S3 bucket using Blues Notecard over Cellular, Satellite, LoRa, or WiFi connectivity. - [Configuring a Slack Route](https://dev.blues.io/notehub/messaging-and-data-pipelines/configuring-a-slack-route.md): A guide to creating Notehub routes to sync data with Slack using Blues Notecard over Cellular, Satellite, LoRa, or WiFi connectivity. - [Configuring a Snowpipe Route](https://dev.blues.io/notehub/messaging-and-data-pipelines/configuring-a-snowpipe-route.md): A guide to creating a Notehub route to Snowpipe, a service of Snowflake, using Blues Notecard over Cellular, Satellite, LoRa, or WiFi connectivity. - [Configuring a Twilio Route](https://dev.blues.io/notehub/messaging-and-data-pipelines/configuring-a-twilio-route.md): A guide to creating a Notehub route to Twilio SMS messaging services using Blues Notecard over Cellular, Satellite, LoRa, or WiFi connectivity. ## LoRa - [LoRa](https://dev.blues.io/lora.md): The hub for documentation on building LoRa-based solutions with Blues. - [Connecting to a LoRaWAN Gateway](https://dev.blues.io/lora/connecting-to-a-lorawan-gateway.md): Learn how to set up your Blues Indoor LoRaWAN Gateway to work with Notecard for LoRa devices and your IoT application. - [Building Your First LoRa App](https://dev.blues.io/lora/building-your-first-lora-app.md): Build an application that uses the Notecard LoRa to read temperature and voltage values and syncs the data with a cloud dashboard - [Sparrow](https://dev.blues.io/lora/sparrow.md): Learn more about the Blues Sparrow (deprecated). ## Starnote - [Starnote](https://dev.blues.io/starnote.md): The hub for documentation on building Notecard solutions that use Starnote for satellite data transmission. - [Choosing Between Skylo and Iridium](https://dev.blues.io/starnote/choosing-between-skylo-and-iridium.md): Learn how to choose between Starnote for Skylo and Starnote for Iridium based on coverage, sky view, packet size, and environmental factors. - [Satellite Best Practices](https://dev.blues.io/starnote/satellite-best-practices.md): Learn how to make the most out of satellite IoT with these best practices when using Starnote - [Starnote Firmware Releases](https://dev.blues.io/starnote/starnote-firmware-releases.md): Blues provides updated firmware releases for Starnote that include feature additions and other improvements. View the release notes for all firmware revisions. ## Feather MCUs - [Feather MCUs](https://dev.blues.io/feather-mcus.md): The hub for documentation on Blues Cygnet and Blues Swan. - [Using PlatformIO with Cygnet](https://dev.blues.io/feather-mcus/cygnet/using-platformio-with-cygnet.md): Learn about using PlatformIO with Cygnet. - [Using STM32CubeIDE with Cygnet](https://dev.blues.io/feather-mcus/cygnet/using-stm32cubeide-with-cygnet.md): Learn about using Cygnet with STM32CubeIDE. - [Using PlatformIO with Swan](https://dev.blues.io/feather-mcus/swan/using-platformio-with-swan.md): Learn about using PlatformIO with Swan. - [Using CircuitPython with Swan](https://dev.blues.io/feather-mcus/swan/using-circuitpython-with-swan.md): Learn about using Swan with CircuitPython. - [Using STM32CubeIDE with Swan](https://dev.blues.io/feather-mcus/swan/using-stm32cubeide-with-swan.md): Learn about using Swan with STM32CubeIDE. - [Recovering the STM32L4R5](https://dev.blues.io/feather-mcus/swan/recovering-the-stm32l4r5.md): Learn how to recover the STM32L4R5 from corruption of the Option Bytes in the _FLASH_ registers - [Serial Logging With STLINK](https://dev.blues.io/feather-mcus/serial-logging-with-stlink.md): Learn how to perform serial logging with an STLINK debugger. ## API Reference - [API Reference](https://dev.blues.io/api-reference.md): Comprehensive reference documentation for Blues developer APIs - [Glossary](https://dev.blues.io/api-reference/glossary.md): Glossary of important terms about Blues Notecard and Notehub - [System Notefiles](https://dev.blues.io/api-reference/system-notefiles.md): System Notefiles are created on Notehub in response to system events and can be routed. - [card Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/card-requests/latest.md): Reference for Notecard requests used to configure device behavior, GPS and accelerometer data, and to query device state, network, and peripherals. - [dfu Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/dfu-requests/latest.md): Notecard offers a set of host firmware update APIs that can be utilized by developers, in concert with Notehub, to update firmware of a Host MCU. - [env Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/env-requests/latest.md): Environment variables are key-value pairs that can be set on a Notecard device, project, or fleet. - [file Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/file-requests/latest.md): The file set of requests enable developers to work with all types of Notefiles. - [hub Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/hub-requests/latest.md): The hub set of requests provide a variety of ways for a developer to configure and monitor the connection between the Notecard and Notehub. - [note Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/note-requests/latest.md): The note requests enable the quick creation and management of Notes in Notefiles. - [ntn Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/ntn-requests/latest.md): Use a compatible Notecard to interface with a paired Starnote device for NTN (satellite) communications. - [var Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/var-requests/latest.md): Provides a simple interface for managing data stored in DB Notefiles. - [web Requests - API Reference](https://dev.blues.io/api-reference/notecard-api/web-requests/latest.md): Notecard can perform requests and obtain responses from 3rd-party APIs and services with the web API requests. - [Authorization API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/authorization-api.md): The Notehub authorization API contains an endpoint to generate an OAuth bearer token. - [Billing Account API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/billing-account-api.md): The Notehub Billing Account API is deprecated. Use the Notehub Organization API instead, which provides RESTful methods to GET data related to Notehub organizations. - [Device API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/device-api.md): The Notehub device API provides RESTful methods that can be used to GET, POST, and DELETE data related to devices. - [Event API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/event-api.md): The Notehub event API provides RESTful methods that can be used to GET event data. - [Jobs API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/jobs-api.md): The Notehub jobs API provides RESTful methods that can be used to manage batch jobs. - [Monitor API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/monitor-api.md): The Notehub monitor API provides RESTful methods that can be used to manage project alerts. - [Organization API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/organization-api.md): The Notehub Organization API provides RESTful methods that can be used to GET data related to Notehub organizations. - [Project API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/project-api.md): The Notehub project API provides RESTful methods that can be used to GET project data. - [Route API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/route-api.md): The Notehub route API provides RESTful methods that can be used to GET, POST, PUT, and DELETE Notehub routes. - [Usage API - Notehub API Reference](https://dev.blues.io/api-reference/notehub-api/usage-api.md): The Notehub usage API provides RESTful methods to retrieve usage data and metrics for data, events, route logs, and sessions. ## Datasheets - [Datasheets](https://dev.blues.io/datasheets.md): Datasheets, design guides, and resources for integrating Notecard into your product. - [Notecard Datasheet – NOTE-ESP](https://dev.blues.io/datasheets/notecard-datasheet/note-esp.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-LORA v1.4](https://dev.blues.io/datasheets/notecard-datasheet/note-lora-v1-4.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-LORA v2.1](https://dev.blues.io/datasheets/notecard-datasheet/note-lora-v2-1.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-MBGLN](https://dev.blues.io/datasheets/notecard-datasheet/note-mbgln.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-MBGLW](https://dev.blues.io/datasheets/notecard-datasheet/note-mbglw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-MBNAN](https://dev.blues.io/datasheets/notecard-datasheet/note-mbnan.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-MBNAW](https://dev.blues.io/datasheets/notecard-datasheet/note-mbnaw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBGL](https://dev.blues.io/datasheets/notecard-datasheet/note-nbgl.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBGLN](https://dev.blues.io/datasheets/notecard-datasheet/note-nbgln.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBGLW](https://dev.blues.io/datasheets/notecard-datasheet/note-nbglw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBGLWX](https://dev.blues.io/datasheets/notecard-datasheet/note-nbglwx.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBNA](https://dev.blues.io/datasheets/notecard-datasheet/note-nbna.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBNAN](https://dev.blues.io/datasheets/notecard-datasheet/note-nbnan.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-NBNAW](https://dev.blues.io/datasheets/notecard-datasheet/note-nbnaw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBEX](https://dev.blues.io/datasheets/notecard-datasheet/note-wbex.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBEXN](https://dev.blues.io/datasheets/notecard-datasheet/note-wbexn.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBEXW](https://dev.blues.io/datasheets/notecard-datasheet/note-wbexw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBEXWT](https://dev.blues.io/datasheets/notecard-datasheet/note-wbexwt.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBGLWT](https://dev.blues.io/datasheets/notecard-datasheet/note-wbglwt.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBNA](https://dev.blues.io/datasheets/notecard-datasheet/note-wbna.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBNAN](https://dev.blues.io/datasheets/notecard-datasheet/note-wbnan.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBNAW](https://dev.blues.io/datasheets/notecard-datasheet/note-wbnaw.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WBNAWT](https://dev.blues.io/datasheets/notecard-datasheet/note-wbnawt.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecard Datasheet – NOTE-WIFI](https://dev.blues.io/datasheets/notecard-datasheet/note-wifi.md): Technical description and full datasheet for all Notecard SKUs. Notecard is a low-power system-on-module with integrated cellular, WiFi, LoRa, and/or satellite connectivity for IoT applications. - [Notecarrier Datasheet – Notecarrier A v2.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-a-v2-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier A v2.3](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-a-v2-3.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier AA](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-aa.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier AE](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-ae.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier AF](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-af.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier AL](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-al.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier B v1.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-b-v1-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier B v2.1](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-b-v2-1.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier B v3.1](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-b-v3-1.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier CX v1.3](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-cx-v1-3.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier CX v1.7](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-cx-v1-7.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier F v1.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-f-v1-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier F v1.3](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-f-v1-3.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier Pi v1.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-pi-v1-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier Pi v2.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-pi-v2-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier R v1.0](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-r-v1-0.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier X v1.2](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-x-v1-2.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier XI v1.4](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-xi-v1-4.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier XM v1.2](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-xm-v1-2.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier XP v3.1](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-xp-v3-1.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier XS v1.1](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-xs-v1-1.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Notecarrier Datasheet – Notecarrier XS v1.2](https://dev.blues.io/datasheets/notecarrier-datasheet/notecarrier-xs-v1-2.md): Technical description and full datasheets for all Blues Notecarrier SKUs, which are carrier boards used to connect Notecards to various peripherals, host microcontrollers, and single-board computers for building IoT applications. - [Starnote Datasheet](https://dev.blues.io/datasheets/starnote-datasheet.md): Technical description and full datasheet for Blues Starnote for use with NTN communications via satellite IoT. - [Blues Cygnet Datasheet](https://dev.blues.io/datasheets/cygnet-datasheet.md): Technical description and full datasheet for Blues Cygnet, which is an Adafruit Feather compatible STM32-based microcontroller ideal for deploying in low-power IoT applications with Blues Notecard. - [Blues Swan Datasheet](https://dev.blues.io/datasheets/swan-datasheet.md): Technical description and full datasheet for Blues Swan, which is an extensible Adafruit Feather compatible STM32-based microcontroller ideal for deploying in low-power IoT applications with Blues Notecard. - [Blues Wireless for OPTA Datasheet](https://dev.blues.io/datasheets/wireless-for-opta-datasheet.md): Technical datasheet and full description for the Blues Wireless for OPTA, an expansion for the Arduino OPTA PLC that adds cellular and WiFi connectivity for IoT applications. - [Blues Mojo Datasheet](https://dev.blues.io/datasheets/mojo-datasheet.md): Technical description and datasheet of the Blues Mojo, used to monitor power consumption when paired with Blues Notecard. - [Blues Scoop Datasheet](https://dev.blues.io/datasheets/scoop-datasheet.md): Technical description of the Blues Scoop, which provides backup power for Notecard-powered IoT applications. - [Certifications by Device](https://dev.blues.io/datasheets/certifications/certifications-by-device.md): A listing of all active and pending certifications (FCC, CE, PTCRB, etc) for all Blues Notecard and Starnote SKUs across cellular, WiFi, LoRa, and satellite. - [Regulatory Agencies and Standards](https://dev.blues.io/datasheets/certifications/regulatory-agencies-and-standards.md): Comprehensive overview of regulatory agencies and standards that govern product safety and compliance for Blues Notecard and Starnote. - [Antenna Guide](https://dev.blues.io/datasheets/application-notes/antenna-guide.md): Antenna guide for Blues Notecard and Starnote, detailing antenna types, specifications, and usage to ensure certification compliance. - [Designing for XP Variants of the Blues Notecard](https://dev.blues.io/datasheets/application-notes/designing-for-xp-variants-of-the-blues-notecard.md): Learn about the differences between the XP variants of the Notecard and their non-XP counterparts bearing the same SKU designators. - [Low-Power Hardware Design](https://dev.blues.io/datasheets/application-notes/low-power-hardware-design.md): Application Note diving into low-power hardware design when building around Blues Notecard and Notehub. - [Notecard Carrier Board Design Guide](https://dev.blues.io/datasheets/application-notes/notecard-carrier-board-design-guide.md): A guide to designing a Notecard carrier board (a.k.a. custom Notecarrier) - [Starnote Carrier Board Design Guide](https://dev.blues.io/datasheets/application-notes/starnote-carrier-board-design-guide.md): A guide to designing a Starnote into a custom carrier board, alongside its companion Notecard - [Notecarrier A Series Solar JST Input](https://dev.blues.io/datasheets/application-notes/notecarrier-a-series-solar-jst-input.md): Understanding how to utilize the solar charging circuitry of the Notecarrier A series - [Blues Security, Reliability, and Governance](https://dev.blues.io/datasheets/application-notes/blues-security-reliability-and-governance.md): A comprehensive overview of Blues' security and resiliency programs - [Notecard Real-Time Clock](https://dev.blues.io/datasheets/application-notes/notecard-real-time-clock.md): Technical details and implementation guidance for using the real-time clock (RTC) functionality on the Blues Notecard. - [Airnote Datasheet](https://dev.blues.io/datasheets/airnote-datasheet.md): Technical description of the Blues Airnote - [Blues Sparrow Datasheet](https://dev.blues.io/datasheets/sparrow-datasheet.md): Technical description of the Blues Sparrow ## Tools & SDKs - [Tools & SDKs](https://dev.blues.io/tools-and-sdks.md): Accelerate your development with command-line tools, firmware libraries, and a collection of host MCU samples. - [Notecard CLI](https://dev.blues.io/tools-and-sdks/notecard-cli.md): A guide to installing and using the Notecard CLI to more easily manage your Notecard devices. - [Arduino Library](https://dev.blues.io/tools-and-sdks/firmware-libraries/arduino-library.md): A guide for installing and using the Notecard Arduino library, known as note-arduino. - [ESP-IDF Library](https://dev.blues.io/tools-and-sdks/firmware-libraries/esp-idf-library.md): A guide for installing and using the Notecard ESP-IDF library, known as note-espidf. - [Python Library](https://dev.blues.io/tools-and-sdks/firmware-libraries/python-library.md): A guide for installing and using the Notecard Python library, known as note-python. - [Zephyr Library](https://dev.blues.io/tools-and-sdks/firmware-libraries/zephyr-library.md): A guide for installing and using the Notecard Zephyr library, known as note-zephyr. - [Notehub JS Library Installation and Usage](https://dev.blues.io/tools-and-sdks/notehub-sdks/notehub-js-library.md): Installation instructions, usage, and documentation for the Blues Notehub JS npm library. - [Notehub Py Library Installation and Usage](https://dev.blues.io/tools-and-sdks/notehub-sdks/notehub-py-library.md): Installation instructions, usage, and documentation for the Blues Notehub Py library. - [Notehub API Postman Collection](https://dev.blues.io/tools-and-sdks/notehub-sdks/notehub-api-postman-collection.md): A Postman Collection that provides full access to the Notehub API - [Notehub IQ](https://dev.blues.io/tools-and-sdks/generative-ai-tools/notehub-iq.md): Notehub IQ is an intelligence layer for Notehub. Ask questions about your deployed products in plain language and get answers back, using the data you already collect. ## Example Apps - [Example Apps](https://dev.blues.io/example-apps.md): Blues provides a variety of open source example applications, code snippets, and best practices to help you build your connected product. - [Building a Simple Asset Tracker](https://dev.blues.io/example-apps/samples/building-a-simple-asset-tracker.md): Build a compact, self-contained asset tracker using the Notecard Cell+WiFi's built-in GNSS module and the Notecarrier CX's onboard Cygnet MCU. - [Building Edge AI Applications](https://dev.blues.io/example-apps/samples/building-edge-ai-applications.md): Learn how to build an Edge AI application using Blues Swan, Notecard, and Edge Impulse. - [Continuous Asset Tracking with External GPS and Immediate Location Sync](https://dev.blues.io/example-apps/samples/continuous-asset-tracking-with-external-gps-and-immediate-location-sync.md): Learn how to build an asset tracking solution with Blues Notecard and Cellular IoT that provides continuous location updates to the cloud. - [Controlling Device State and Receiving Acknowledgment](https://dev.blues.io/example-apps/samples/controlling-device-state-and-receiving-acknowledgment.md): This sample app shows how to control device state from a web app using DB Notefiles, and how the device acknowledges changes by reporting the state it actually has. - [Managing a Notecard's WiFi Network Remotely](https://dev.blues.io/example-apps/samples/managing-a-notecards-wifi-network-remotely.md): This sample app shows how to remotely manage a Notecard's WiFi connection using the Notehub API and Notehub SDKs. - [Putting a Host to Sleep Between Sensor Readings](https://dev.blues.io/example-apps/samples/putting-a-host-to-sleep-between-sensor-readings.md): A sample app that periodically takes sensor readings, and uses the Notecard to put a host MCU to sleep for a set period between readings - [Routing Data from Notehub to a Custom Cloud Endpoint](https://dev.blues.io/example-apps/samples/routing-data-from-notehub-to-a-custom-cloud-endpoint.md): Learn how to write a cloud service that receives data from a Notehub route, using a variety of popular backend languages and frameworks. - [Using LEDs and NeoPixels to Monitor Notecard Status](https://dev.blues.io/example-apps/samples/using-leds-and-neopixels-to-monitor-notecard-status.md): This sample app shows how to integrate monochromatic LEDs, RGB LEDs, and NeoPixels to monitor your Notecard-based product. ## Support - [Support](https://dev.blues.io/support.md): Troubleshooting guides, diagnostic references, and support resources to help you resolve issues with Notecard and Notehub. - [Troubleshooting Notecard](https://dev.blues.io/support/troubleshooting-notecard.md): A systematic guide to diagnosing and resolving Notecard and Notehub issues, whether you have local access to the device or are troubleshooting remotely. - [Diagnosing Cellular Connectivity Issues](https://dev.blues.io/support/diagnosing-cellular-connectivity-issues.md): A guide for diagnosing and resolving a variety of common LTE Cat-1, LTE Cat-1 bis, LTE-M, and NB-IoT cellular connectivity issues with the Notecard. - [Diagnosing Satellite Connectivity Issues](https://dev.blues.io/support/diagnosing-satellite-connectivity-issues.md): A checklist for diagnosing and resolving satellite (NTN) connectivity issues with Starnote for Skylo, Notecard for Skylo, and Starnote for Iridium. - [Diagnosing GPS Issues](https://dev.blues.io/support/diagnosing-gps-issues.md): A guide for diagnosing and resolving a variety of issues with GPS/GNSS when building location-aware applications with the Notecard. - [Using Notecard Trace Mode](https://dev.blues.io/support/using-notecard-trace-mode.md): Learn how to utilize Notecard trace mode for debugging - [Understanding Notecard Penalty Boxes](https://dev.blues.io/support/understanding-notecard-penalty-boxes.md): Learn how and why a Notecard may enter a penalty box after repeated cellular network or GPS failures. - [Connection Retry and Fallback Behaviors](https://dev.blues.io/support/connection-retry-and-fallback-behaviors.md): Learn how Notecard automatically handles connection retries and fallback behaviors from WiFi to Cellular to Satellite to ensure reliable data transmission. - [Notecard Error and Status Codes](https://dev.blues.io/support/notecard-error-and-status-codes.md): Notecard API responses often include a set of error and status codes denoted by curly braces, e.g. `{sync-begin}`. These codes are static and will persist across API versions. - [Recovering a Bricked Notecard](https://dev.blues.io/support/recovering-a-bricked-notecard.md): Instructions for recovering a bricked Notecard using Notecarrier A or Notecarrier F. - [Buyer's Guide](https://dev.blues.io/support/buyers-guide.md): Pick the right Blues starter kit and radio technology for your project. Compares Cell+WiFi, Starnote for Skylo, and LoRaWAN kits, and explains LTE Cat-1, Cat-1 bis, LTE-M, and NB-IoT. - [Back Catalog Products](https://dev.blues.io/support/back-catalog-products.md): Information on Blues products that have moved to back catalog status and are available only at minimum order quantity (MOQ). - [Frequently Asked Questions](https://dev.blues.io/support/frequently-asked-questions.md): Frequently asked questions related to IoT connectivity with Blues, Notecard, and Notehub. ## Connected Product Guidebook - [Cloud Architecture Guide - Connected Product Guidebook](https://dev.blues.io/connected-product-guidebook/notehub-cloud-architecture-guide.md): Design your cloud architecture for a connected product, including how Notehub integrates with your backend and data pipelines. - [Firmware Best Practices Guide - Connected Product Guidebook](https://dev.blues.io/connected-product-guidebook/firmware-best-practices-guide.md): Best practices for writing reliable, production-ready firmware for connected products using Notecard. - [Integrating Notecard into a Product - Connected Product Guidebook](https://dev.blues.io/connected-product-guidebook/integrating-notecard-into-a-product.md): Step-by-step guidance for integrating Notecard into your hardware design, from schematic to first data in Notehub. - [Antenna Guide - Connected Product Guidebook](https://dev.blues.io/connected-product-guidebook/antenna-guide.md): Learn how to select, place, and validate antennas in your connected product design. - [Product Certification Guide - Connected Product Guidebook](https://dev.blues.io/connected-product-guidebook/certification-guide.md): Navigate FCC, CE, and carrier certifications for connected products built with Blues Notecard. ## Optional - [Full documentation](https://dev.blues.io/llms-full.txt): Single-file concatenation of every page listed above — 5.86 MB (~1,536,072 tokens, estimated). Intended for bulk ingestion and RAG pipelines; too large to load into a model context window — fetch individual page `.md` files instead. - [Blues Expert MCP server](https://dev.blues.io/tools-and-sdks/generative-ai-tools/blues-expert-mcp.md): A guide to installing and using the Blues Expert MCP server to build and develop Notecard and Notehub applications using generative AI.