HobbyBrauer
Active Member
Okay so interesting results from tonight's experiments but definitely a step in the right direction. First, isolating the DC ground immediately helped, the intensity and frequency of spikes when switching local inductive loads was drastically reduced. I then traced my wire routing to ensure as much spacing between HV and LV lines, but this made no discernable difference in my testing. So bottom line, I still have spikes which now only go down to -40C instead of -196C (for the RTDs) but this only occurs when an inductive load is switched on not off and does not occur every time.
Tomorrow, my plan is to go through all the wiring and replace anything "questionable" in terms of possible EMI with shielded cable. I assume it's okay to shield the RTD wires to the arduino (SPI, SCi etc.)?
@BrunDog here is a photo of the current configuration of my panel. Hopefully you can see something I'm overlooking.
Tomorrow, my plan is to go through all the wiring and replace anything "questionable" in terms of possible EMI with shielded cable. I assume it's okay to shield the RTD wires to the arduino (SPI, SCi etc.)?
@BrunDog here is a photo of the current configuration of my panel. Hopefully you can see something I'm overlooking.