I don't really understand what that module does or what inputs it needs. I don't see the data sheet anywhere. What voltage in and out does it provide and what is the 24v for?
You will need 24 relays for 12 readings, since the relays with two contacts of Tom George's design are not common in the Arduino world.
Hi,You don't use the Arduino relay modules, you BUILD the assembly using DPDT relays to ensure isolation with the switching, thats why I included the MOSFET coil driving.Thanks.. Tom...
I did it that night:
I'm probably out of my depth here but, could this work? Essentially, mount a voltmeter for each cell and read them through I2C.
I have imagined a solution using 12 lilypads, one on each battery, but then you have got the problem of transmitting the result in an isolated way.
I thought maybe since the chips linked have a differential mode that would get around the isolation problem. Oh, well.
I can't help thinking there's got to be an electronic solution to this problem. Let me know if I'm being a nuisance http://isolation-transmitter.com/download/JSD-TAF-1001S.pdfPrecision Optically Isolated Voltage Sensor1-Wire voltage sensor TSV200-60i