This is the project I did for fun. It involves an LED strip (WS2812B) controlled by Arduino. Arduino is controlled from my phone via an HC-06 bluetooth adapter using an app I developed.
Arduino is also connected to a microphone, so it picks up the sound, performs Fourier transform on it (it’s actually Hartley transform I’m doing, but these details are boring) and visualizes amplitudes of different frequency ranges in a bunch of different ways.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.
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