AS ALWAYS - THIS IS SELF-BUILD PROJECT, THERE ARE EXISTING COMMERCIAL PARTNERSHIPS IN PLACE FOR ASSEMBLY AND MANUFACTURE.

DO NOT ATTEMPT TO ORDER PCB ASSEMBLY, ORDERS WILL BE CANCELLED.

This version removes the reflash button and replaces it with a pair of exposed contacts that must be shorted together to reflash.

The snap-off region is a remote microphone circuit, and also contains all the active analog circuitry. A 3.5mm headphone jack connects 3.3v and GND between the 2 PCBs, and brings the amplified signal (0.0 to 3.2V) down to the Pico for digitisation.

A 3D printed mount for the digital / battery PCB and the microphone PCB is included. Note that the 3D print design makes 5 mounts. If you order 5 PCBs, only order 1 3D print. If you order 10 PCBs, order 2 3D prints.

DigiKey shopping list, buys parts to make 5 : https://www.digikey.co.uk/en/mylists/list/UY9RZ7ZIG9