A mechanical vending machine exchanging 1€-coins for Bitcoin. It works using the easywallet.org service which provides a Bitcoin wallet with a web interface not unlike an online banking account, but much simpler. The only way to access the account is through a secret link, which is received in exchange for the 1€-coin. Opening this link in a web browser, the costumer can instantly send this 1€ (minus material costs) to another Bitcoin user..
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.