MicroPython Forum (Archive)

The readings of the SCD30 are part of a bigger system, but at this moment im testing it by the simplest way, almost the same code as mnvk52 from machine import Pin, SoftI2C from scd30 import SCD30 import utime def main(): i2cbus = SoftI2C(sda=Pin(21), scl=Pin(22), freq=10000) print(i2cbus.scan()) re...

Thank you for replying so quickly SEL pin is connected to GND Baudrate setted to 10000 I use 20cm Duponts I tried with 3.3v and 5v at VCC Last error i got is --> OSError: [Errno 19] ENODEV .No device found, if i run i2c.scan() before sendind a command i get an empty list, and no recover its possible...

I also facing the same error.
Im using SoftI2C to set I2C
I tryed with uPy 1.14 and 1.15 with same results. If I print an i2c scan previously I got that there are no i2c devices.

I tried with Arduino libraries and there is no problem.