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Counting Punches with Circuit Playground Express #CircuitPlaygroundExpress @MSMakeCode

Counting Punches with Circuit Playground Express

User SciJoy has published this tutorial on Hackster.io on how to use the Adafruit Circuit Playground Express to count punches when exercising with gloves and a punching bag. The project is programmed in Microsoft MakeCode making the build very quick & easy.

The Circuit Playground Express (CPX) has a built in accelerometer. I used it to count how many punches or curls with a weight. MakeCode triggers an event when the strength of the three axis accelerometer crosses a threshold.

For every punch, I wanted to a new NeoPixel to light up. When I reached the max number of reps in a set, I wanted a different light color to track how many sets I had completed. When I finished 10 sets, I wanted the to be an audible alert and the lights to reset.

See the project on Hackster.io and a video of the build below. And if you are building great projects, let us know in the comments below!


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.

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