4. microPython on esp32 C3 mate error InvalidPin when use GP19 for relay.

microPython on esp32 C3 mate error InvalidPin when use GP19 for relay.

  • S

    User
    Hi,
    With microPython on esp32 C3 mate, I would like to use a 3A Relay unit, for that I use GP19 which are also dedicate for USA D+, with the following code:
    '''python3
    import machine
    ...
    relay = machine.Pin("GP19", machine.Pin.OUT)
    ...
    if temp > 42:
    ...
    relay.value(1)
    elif temp < 40:
    ...
    relay.value(0)
    else:
    pass
    ...
    '''

    But I have this error:
    Traceback (most recent call last):
    File "main.py", line 7, in <module>
    ValueError: invalid pin

    Do you know why?
    Is it possible to use GP19 for a relay even if this Pin is dedicate to USA D+?

    Thanks you,
    Sebastien

    0

  • Why don't you use the 1st argument (pin number) in integer format ?

    0

  • the GP is not required, only numbers are required.

    0