Info request

[dentex]

Hello! I was trying to use a Chinese module with a MQ7 sensor onboard. Using your library I found that MicroPython complained about some syntax errors (apparently; I'm not an expert). I changed it a little bit and I issued a reading... Then I had a final error I don't know how to fix:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "BaseMQ.py", line 150, in readScaled
ValueError: math domain error

Other than that, according to what the guys here were talking about, it seems that to issue a reading, the module must be powered respecting certain cycles (1,4V and 5V alternatively).

Do you have any advice in regards? Thanks.