NEW GUIDE: Adding a WiFi Co-Processor to CircuitPython #CircuitPython #ESP8266 #ESP32 #Feather @Adafruit @ESP8266 @ESP32net

Adding a WiFi Co-Processor to CircuitPython Adafruit

A new guide in the Adafruit Learning System – Adding a WiFi Co-Processor to CircuitPython!

This guide will show you how to connect your CircuitPython board to the Internet, by using an ESP8266 or ESP32 as the ‘Wireless modem’ – we’ll even show you how to upload the required AT command firmware to the chip, all from your CircuitPython board

Use a chip with integrated WiFi such as the ESP8266 or ESP32

The all-in-one chips are powerful and low cost, but have some drawbacks. The ESP8266 has very few GPIO pins, and they are limited in functionality – for example only one ADC and it’s not easy to use. A RTOS also takes up a lot of processor time, and makes real-time control difficult for some things like NeoPixels. The ESP32 solves a lot of these issues but doesn’t have the native USB we require for a good CircuitPython experience.

Using an ESP8266 or ESP32 as a ‘Wireless Co-processor’ gets us:

A main chip like a SAMD21 or SAMD51 with USB, peripherals, pins, and timers
Wireless handling by a separate chip, so we don’t have to run the WiFi stack natively – saves a lot of FLASH/RAM space
Re-programmable co-processor.

See this guide today! And check out the video below:


As 2022 starts, let’s take some time to share our goals for CircuitPython in 2022. Just like past years (full summary 2019, 2020, and 2021), we’d like everyone in the CircuitPython community to contribute by posting their thoughts to some public place on the Internet. Here are a few ways to post: a video on YouTub, a post on the CircuitPython forum, a blog post on your site, a series of Tweets, a Gist on GitHub. We want to hear from you. When you post, please add #CircuitPython2022 and email circuitpython2022@adafruit.com to let us know about your post so we can blog it up here.

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CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


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