1st is it possible to add additional i/o on an ESP32-CAM module by soldering onto the esp32-s pins that isn’t used / connected to the header pins?
2nd has anyone used a Microchip expansion chip (MCP23016 or MCP23S17) on this module while retaining all of the original functionality of the ESP32-CAM?
- I haven’t tried it, but it should be possible to use additional GPIOs from the ESP32-S chip as long as those pins aren’t being used by the camera.
- I think you should be able to use the expansion chip without any problems. However, I’m not sure what would be the best GPIO to connect it to. I think you’ll have to experiment to figure out.