many thanks to el84 for sharing this circuit with us. Unfortunately the schematics is a bit blurred on the HP and I am not sure about some components. Just to be on the safe side: the transistors are BC338 and 546 and R1 is 33k ? For the I/O control do I really set the GPIO pin and not the respective port ? (as they are not the same)
Also helpful would be the HW settings for the 2 GPIOs (pullup resistors, max. current, etc.)
BR
George
