Full documentation page for building the PAPRa can be found here: https://tetrabiodistributed.github.io/papra/
Firmware for flashing the PAPRA PCBA can be found here: https://github.com/tetrabiodistributed/papra-pcb-firmware/tree/main/papracode
Upload settings can be found in the arduino program.
Please note that there are a number of ATTiny SKUs that are compatible with this PCB and code, please refer to the below table when choosing an appropriate IC.
Model number | Confirmed | Notes |
---|---|---|
ATtiny204SSN_, | Yes | See Below(1) |
ATtiny404SSN_, | Yes | |
ATtiny804SSN_, | Yes | |
ATtiny1604SSN_, | Yes | |
ATtiny214SSN_, | Yes | See Below(1) |
ATtiny414SSN_, | Yes | |
ATtiny814SSN_, | Yes | |
ATtiny1614SSN_, | Yes | |
ATtiny1624SSU, | Yes |
(1)ATtiny 204 and 214 have limited (2K) flash memory for program space, but the firmware can be made to fit by sacraficing the bootup LED sequence.