Help please, it's all gone wrong

[stuart]

Ok, was the controller board pre-populated or did you have to solder the PCF chip yourself?

[Ian_Jordan]

Pre-populated, I got it from the OpenEnergy shop, along with 4 modules.

[stuart]

Great, should work fine then.

[rolfbartels]

DIYBMS v4

Did you get an answer? I had the same problem last year. It’s down to the PCF8574 being a slightly different Version (This is from memory). Stuart gave me the fix some where in this forum. Essentially edit line 91 in the main.ccp of the Controller. From x38 to x20. [image]

[Ian_Jordan]

Thanks so much for adding this. No I haven’t got that far. I’ll check it out when I get the chance. Really appreciate the feedback.