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@ -99,13 +99,13 @@ URLs:
GPIO PINS:
<br> 13 free (used by sd card but free if using 1 bit mode)
<br> 12 free (must be low at boot, used by sd card but free if using 1 bit mode)
<br> 14 used by sd card (useable is SPI clock?)
<br> 2 used by sd card (useabke as SPI MISO?)
<br> 15 used by sd card (might be usable as SPI CS??)
<br> 14 used by sd card (usable is SPI clock?)
<br> 2 used by sd card (usable as SPI MISO?)
<br> 15 used by sd card as CS
<br> 1 serial - output only?
<br> 3 serial - input only?
<br> 4 has the illumination/flash led on it - led could be removed and use as output?
<br> 33 onboard led - possibly remove led and use as gpio?
<br> 33 onboard led - use as output?
Some great info here: https://github.com/raphaelbs/esp32-cam-ai-thinker/blob/master/docs/esp32cam-pin-notes.md
BTW-You can use an MCP23017 io expander chip on pins 12 and 13 to give you 16 general purpose gpio pins, this requires the adafruit MCP23017 library to be installed.