I’m using a CAN shield on a Uno board. I’ve uploaded the receive example from the library package:
Then I wired CAN-H, CAN-L and ground of the shield to two different USB-to-CAN adapters. One of them from PEAK:
No matter if I send from or receive on the Arduino, the Windows tools say “bus heavy”. The TX (RX, respectively) light up continuously after the first message was sent.
What’s wrong? (I’ve checked the wiring twice!)