A CircuitPython BLE Client and Server Tutorial #CircuitPython #Feather #Bluetooth

Robotron.info blogs about using Adafruit Feather nRF52840 Bluetooth boards to automate the power on a surveillance camera server.

This CircuitPython tutorial demonstrates how to build a battery powered Bluetooth BLE remote control to operate a BLE peripheral hosting a solenoid and a spectrally selective light detector.  Two Adafruit Feather nRF52840 Express boards will be used for the BLE client and server.

Currently the only way to turn it on is by pressing the illuminated push button on the front of the case.  My goal is to build a BLE peripheral that can attach to the front panel so I can turn it on remotely from outside the closet.  I also want the peripheral to wirelessly report whether the server is on or off.

The Feathers are programmed in CircuitPython 5.0 alpha which has active BLE development.

See the video above, this excellent tutorial here. Also see other CircuitPython tutorials listed here.


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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