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!
This project is also an excellent introduction to using Bluetooth on the nRF52840, a powerful chip from Nordic that will be used in many products. Adafruit is dedicated to bringing the power of this chip to developers both in Arduino and especially in CircuitPython where development will be extremely easy.
See a demonstration from a recent live Adafruit Show and Tell:
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 code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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.