Free GPIO pins?
alinanorakari opened this issue · comments
I've got ideas for Badgy that require me to connect to a GPIO pin (e.g. a 1-wire digital temperature sensor). I see that GPIO9 seems to be free. Can I solder to it or is it used internally by the package? Are there other free pins that I'm missing? If there aren't any, I can sacrifice directions of the joystick, right?
GPIO9 is used by the ESP-12 for internal flash memory, so using it will cause resets. You can sacrifice the direction pins to use as GPIO, but note that GPIO1,3 are shared with TX/RX, so serial cannot be used concurrently with these pins. GPIO10 is also input only, so it cannot act as output.
Curious if you went anywhere with this, I'd also like to add a temp sensor.
You can sacrifice the direction pins to use as GPIO, but note that GPIO1,3 are shared with TX/RX, so serial cannot be used concurrently with these pins. GPIO10 is also input only, so it cannot act as output:
