https://tinker-board.asus.com/forum/index.php?/topic/15580-gpio2c6-and-gpio2c7-voltages-are-lower-than-else/
GPIO2C6 and GPIO2C7 voltages are lower than else - Hardware - Tinker Board Forum
Question about GPIO2C6 and GPIO2C7 pins. It is possible to set them to GPIO using wiringPi, but the voltage at HIGH output is lower than other GPIO pins. It is...