Arduino board project

Hey everyone, I am intending to connect a VESC to an Arduino board, however since the VESC was previously fried… (not my fault apparantly) and repaired, I’m a little nervous about the connections. I have VESC version 4.12 and trying to connect to the arduino via the PPM pins, I can see the ground pin but don’t know which is the one for the signal and which for the 5V… For testing purposes I’d like to connect a 4s battery and maybe should limit the current draw on the bldc tool.

Thanks for any help

Outside: GND Middle: 5V Inside: Signal

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