@Allnight said in Can I plug USB data lines directly from slave device to the Omega2?:
But I got worried about the voltage mismatch, thinking that the USB slave device might send back the full 5v. (Some things I read talked about 5V is actually more than intended, so that the voltage drop from the wire length could be absorbed.
Only if it is improperly implemented or you allow the signal lines to connect before the ground, something USB connectors are physically designed to avoid, but that could conceivably happen with other custom wiring schemes.
USB uses 5v power, but the signalling is 3.3v, or lower.