Firmware 1.04, Spring 2026

A : microphone hole. Don't let moisture or dust get into the hole.

B : micro USB port. Used for USB microphone operation and for reflashing firmware

C : Green LED. Solid green and no red flashes at start up indicates an SD card error

D : "reflash" terminals - used to update the device firmware

E : red LED. Indicates presence of SD card at start up by flashing very bright 8 times. Thereafter the red LED reflects audio activity until the device is chirped (programmed for recording). Chirping success is indicated by flashing 10 times very bright. Red LED stays off once chirped.

F : SD card socket - unsprung, push-pull
If your pippyg does not flash at power up, it can't find the SD card. Clean the card's terminals, or try another card.
pippyg.uf2
File Size: 254 kb
File Type: uf2
Download File
pippyg_mic.uf2
File Size: 258 kb
File Type: uf2
Download File
REFLASHING YOUR DEVICE FIRMWARE
​These are versions 1.04 of pippyg.uf2 and pippyg_mic.uf2. The file pippyg.uf2 supports execution from a USB power bank as well as batteries. The file pippyg_mic.uf2 boots as a USB microphone when powered over USB, so you can use your pippyg as a Griff if necessary.

First, turn off your pippyg and plug a USB to micro USB cable into your desktop computer. Next you need to short out the two metal pads labelled "Reflash" using some copper wire. I find it easiest to use multi-strand mains wire with the insulation trimmed back. Short the two pads, and keep them shorted as you plug the micro USB cable into your pippyg. If any LEDs flash when you plug in the cable you have not been successful, try again. On success the pippyg temporarily becomes a USB flash drive called RPI-RP2 - drag the .uf2 of your choice onto this flash drive, and the on-device firmware will be rewritten and the device will reboot. If you used pippyg_mic.uf2 the pippyg will reboot as a USB microphone since it is powered via USB, so unplug the USB cable then turn on your pippyg and it will boot as you expect and be running the new firmware.