Notefile widget8/5/2023 ![]() The full source is in GitHub, but I'll cover the major portions below.įor this project, I used the Arduino IDE and instructions from the blues wireless developer portal to get it configured for the ESP32.įirst, I included the Notecard header from the note-arduino library and added some pin directives for readability, with each _LIGHT directive mapping to the GPIO I wired to the channel for that light on the relay. With my ProductUID in hand, I was ready to write the firmware. Writing the Notecard Configuration Firmware The key thing a new project gets me is an identifier called a ProductUID, which is used to associate a Notecard to Notehub.io so all my data ends up in the right place. It's a pretty straightforward process and the blues wireless developer portal contains step-by-step instructions for creating an account, projects, and more. My next step was to create a new project at Notehub.io. Then, I connected five white wires to each channel on the relay. Each colored wire corresponds to a signal light on the stack. ![]() ![]() I started by connecting the light stack to my relay. I have two of these kits and they are my go-to for prototyping something new, and even for traveling with a project, back when we would go places and do things. The one I have from ELEGOO has 8 channels and is pretty easy to set-up. A 5V Relay Module with at least as many channels as lights you need to control.My tower is a 24V tower with five lights, but any tower will do. A blues wireless Feather Starter Kit, which includes a Notecard, a Feather-friendly Notecarrier-AF, and an Adafruit HUZZAH32 ESP32 Feather.My hardware setup for this project consists of the following: Notehub.io also allows the Notecard to function as a bi-directional device that can receive data in addition to publishing data. Notecards are assigned to a project in Notehub.io, which then sync data into those projects for routing to your cloud application. On the cloud side, the Notecard is preconfigured to securely talk to Notehub.io, the blues wireless service that enables secure device-to-cloud data flow. For this project, I used the Notecarrier-AF, which has onboard cellular and GPS antennas, a LiPo battery port, Grove and Qwiic connectors, and a Feather-compatible header socket, making it perfect for this project. But blues also provides a series of expansion boards, called Notecarriers, that include an m.2 socket for the Notecard and a number of other features for prototyping. The Notecard is a small 30 by 34 mm SoM that’s ready to embed in a custom project via its m.2 connector. No activation charges, and no monthly fees. The Notecard is a cellular and GPS-enabled device-to-cloud data-pump that comes with 500 MB of data and 10 years of cellular service for $49. The hardware I chose for this project is the blues wireless Notecard.
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