Holder for Raspberry Pi Pico + two AA batteries

thingiverse

A simple holder for two batteries and a Raspberry Pi Pico (held in by friction). The Raspberry Pi Pico can run with 1.8V or more (up to 5.5V), meaning two AA batteries or rechargeables are enough. Make sure to remove at least one of the batteries before connecting the Pico to your computer (or if you know how, use a diode to prevent the batteries from being connected to the power provided by the USB connection). The batteries can be connected using some wire, I melted the end of the wire into the end of the tab holding the battery. Both cells are supposed to point the same way, you can wire them in series using the provided holes. The photos show one way to do it. I used some stranded wire I had around, another nice option might be copper foil (aluminium foil will not be easy to connect to a wire). Also, if you look closely, you will notice I didn't solder the wires to the Raspberry Pi Pico -- this is just meant as a temporary setup. Note: Please remember to remove the batteries when you connect this to your computer to upload new code. Printing: I used Draft mode at 0.3mm layers and PLA, but more springy materials like PETG or ASA might work even better.