It’s the first Monday in May, and that means… new ATP! Today, I’m going to talk about CAN bus. What’s that? “CAN” stands for “Controller Area Network”, and it’s a twisted-pair, multi-master data bus that’s really resilient against noise, along with having framing, error detection and lossless bus arbitration built into its spec. If you’re looking for a short-range (40 meters) data bus with good throughput (1Mb/s) and good noise immunity, CAN bus has a lot to offer. So much so that it’s used in automotive and industrial applications where nothing else will work. In today’s video, I dig into the CAN bus esoterica to give you a look into how it does what it does. This video also tee’s me up for the next ATP, which is a natural extension to the CAN bus topic: OBD2. (spoiler: CAN bus is sort of a subset of OBD2).