I got your board yesterday and have put it together and it works fine. There were 2 problems with the setup as you had it:
1. The RTC module seems to be none-functioning, so have replaced it with one that works.
2. The external temp sensor LM35 was wired back to front, so I have replaced this as it was damaged
Note that the voltage says 5.0V. This is due to me not connecting anything to the voltage sensor input which in your case will the a wire coming from your +24V battery side. When you get all this back, leave the wires that I connected to the board as they are and do not connect any other wires to the board until you have verified it works as-is.
Get yourself a multimeter too, you need one if you're planning on putting this display on your C5
posted on: 23/02/2014 12:19:30