About the size of a deck of cards ... has made one which is light years ahead of the toy kits, using a Raspberry Pi Pico, a 100 MHz ADC, and an effort to design a better input circuit.

PICO-GB running on the full-size Pi Pico Then in early June, the RP2040 chip that powers the Pi Pico went up for sale in single unit quantities. That opened up the possibility of building the PICO ...

The Raspberry Pi Pico is a $4 microcontroller ... on your switches to its corresponding pin on the Pico. This is where it helps to have that schematic of your wiring on hand to keep you from ...