I am a bit confused because of the GPIO pin specification is different at two pins: PIN7 and PIN8 (please check the attached pictures).
Also, if I am right, the OpenSpinkler Pi board uses only 5 PINs – not included the power PINs (I have collected this information from the source codes).
My questions are the followings:
– in case of “PIN7 – GPIO 4 (GPCLK0)” what is the exact function of the PIN: “simple” GPIO output or clock (“General Purpose CLock”) output?
– in case of “PIN8 – GPIO 14 (TXD)” also what is the exact function of the PIN: “simple” GPIO input or serial data transmission (serial TX Data)?
The usage of the clone Pi board is depend on the answers for the above questions…