Help tracking down a possible cause for robot disconnects

[simpsonboy77]

Each time you lose comms, PDP ports 12-15 draw a decent amount of current. I assume these are your 4 cim motors. You have a few brownouts, but none of them seem related. I'd open up the rio and check for any metal shavings. Since you replaced the Rio, this is unlikely to be the issue.

It could be grounding or static issue. With the robot OFF measure resistance from the frame to the PDP ground (any ground will do, they are all connected). Then check the frame to a ground on the rio. I usually measure it to the metal shield on the USB port. You should ideally get open circuit, but anything under 1M should be investigated in my opinion.

The last thing I could think of is maybe it's your battery. Make sure the terminals are tightened down hard so you can't even rotate the terminal around the bolt. You can toss a star washer between the wire terminal and the battery terminal to cut through any surface oxidation.