ESP32 & Cellular IoT CI Build Status Light #ESP32 #Huzzah #IoT #InternetOfThings @Esspressif @Adafruit @hacksterio @BrandonSatrom

Brandon Satrom posts on uses the blues wireless Notecard and an Adafruit ESP32 Feather to monitor software CI builds.

I’ve been a software engineer for over twenty years, and one of the things that has always fascinated me is testing. Unit testing, integration testing, TDD, BDD, automated testing, CI tools: all of it gives me the warm fuzzies. A solid testing approach gives an engineering team the confidence that a product works as it should, and a safety net to refactor and evolve a codebase without fear of breaking everything.

When I joined blues wireless last year, one of the tasks I took on was maintenance of the open source libraries and SDKs in our GitHub organization. We have libraries for using the Notecard (our core hardware product) with Arduino, C/C++, Go, and my personal favorite language, Python.

I figured there was no better way to jump into maintaining a new library than to write some tests. And since I’m a sucker for new hardware projects, I decided to use the blues wireless Notecard to create an IoT status light to visually display the results of test runs and CI builds.

The complete source for this project, including ESP32 firmware and Workflow files for GitHub Actions are in the notecard-build-monitor GitHub repo.

The hardware I chose for this project is the blues wireless Notecard. 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. No activation charges, and no monthly fees.

The Notecard is a small 30 by 34 mm SoM that’s ready to embed in a custom project via its m.2 connector. 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. 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.

See the build details in the post here.

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 35,000+ makers on Adafruit’s Discord channels and be part of the community!

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more

CircuitPython – The easiest way to program microcontrollers –

Maker Business — How (some) chips get made

Wearables — Sample code is your new best friend

Electronics — Solder braid quick fix

Python for Microcontrollers — Python on Microcontrollers Newsletter: 10K Subscribers, Picos Made in Africa and more!! #CircuitPython @micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Jellyfish Lanterns, Matter 1.0, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week — 4pm Eastern TODAY! 11/29/22 @adafruit @johnedgarpark #adafruit #newproductpick

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.