This is a USB desk grommet for 1-3/4″ (about 45mm) round holes. I designed it to hold a bulkhead / panel mount USB extension cable for a one button studio that we designed. It’s a handy way to mount a USB extension to a small equipment rack or piece of furniture.
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.