Available GPIOs for user buttons

[miotislucifugis]

Ive designed a new pcb pi shield (or "hat", whatever) for minidexed that has footprints for some user-defined buttons. I cant seem to find this info now, tho' I know Ive read it here somewhere before. Before I order PCbs, can anyone confirm that GPIOs #0, 1, 5, 6, & 7 are free and safe to use. Thanks in advance

[diyelectromusic]

I'd avoid 0 and 1 personally as they tend to be used with HATs, even thought circle/MiniDexed doesn't really care. In some cases GPIO=0 is treated as "not used". You might be ok - but easiest thing is to just try it with a jumper lead...

5,6,7 should be fine - depending on what other hardware you're using of course.

In general terms, everything is pretty much configurable. The limits tend to be what the Raspberry Pi is assuming - UART for MIDI, I2S audio, I2C or SPI display, etc... these are all on specific pins, so as I say, it depends what other hardware you're using.

Kevin

[miotislucifugis]

great. Thank you for the quick reply