There is a second way to use the CAN bus: in “single wire” mode (SW-CAN). But before I go into that, let me set up a dual-node bus, using standard MCP2551 transceivers for a “normal” CAN bus with CAN-HI and CAN-LO signals. Here is my little breadboard setup:
On the left: a HyTiny from Haoyu Electronics. It’s a nice alternative to the Blue Pill with a convenient 6-pin programming header on the end (power, SWD, and serial).
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