The stretchy sticker like patch is applied to the skin and powers itself from lactic acid found in our sweat. Monitoring lactic acid would help provide more information about muscle fatigue. Future versions of a sweat patch could also be used to monitor glucose and hydration levels while providing enough power to transmit data to a smart phone app.
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.