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Hi Guys,
Cannot get LM335z to work on Cerbo temperature inputs. Cerbo shows ‘reverse polarity’.
With 335 connected, analogue input is 0.73V; which doesn't look right me. Tried two 335z devices on two different analogue inputs.
Do I need any additional components?
Many thanks.
this has been discussed quite often here in the community.
For example here: Venus GX, temperature sensor issues
Venus GX and Cerbo GX use identical temperature sensors and connection.
Ah, missed that post as I searched for LM335z and not LM335.
Many thanks.
Answer ... my LM335z was a fake!
If your Cerbo reads ~0.7V from the sensor with caption 'reverse polarity', your LM335z is actually a transistor marked by counterfeiters as a LM335z.
