What are the current draw limits on the 5V DC expansion pin (Pin 14) of the CBT 18-pin expansion header?
We're connecting a device that draws an average of 155mA, with a peak at 215mA. We can drive it perfectly from other Arduino devices but when connected to the CBT the external device powers up but the CBT shuts down and the power LED turns off.
Disconnecting the device instantly brings the CBT back to life - so we assume the issue is the device is drawing more power than the CBT can supply.
The CBT is connected solely to USB power for testing - would it matter if we used the 12V supply from the CAN line instead?