Here's a simple demonstration project to get you started with Bluetooth Low Energy (BLE) support in CircuitPython. Blinka jumps through a NeoPixel ring of fire, using a servo. It's all controlled wirelessly via the Adafruit Bluefruit LE Connect app from your phone or tablet, using a Feather nRF52840 Express and a CRICKIT FeatherWing.
You can adapt and expand upon this code for your own projects. Add more servos, add sound, whatever you want. It's up to you!
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