Touch-free tap (Raspberry Pi Foundation, Pico) By Raspberry Pi Foundation · Example build · 7 views · 0 remixes A Raspberry Pi Pico reads an ultrasonic sensor and switches a relay-driven water pump when hands come within 12 cm, making a hands-free bucket tap 0SaveRemixCopy link Estimated parts cost 1 of 6 parts pricedDifficultyEasyParts6 parts · 6 pcs Start the assembly guide →