I saw that the value range is between 0x0000 and 0xc800, D6 is a high byte and D7 is low. ![]() After pressing the pedal I saw that bytes D6-D7 change in the packet with ID 0x201. This is the easiest data to spot - just pres/release the pedal and look for changing numbers in the screen. First of all I wanted to figure out if there is a message containing gas pedal position. However, trying to play around with knobs, pedals and buttons makes the image a lot more clear. The transceiver translates signals from the controller to the bus, and from the bus to the transceiver. At the beginning it looks like a lot of random numbers that make no sence. It’s a standalone CAN controller that communicates over SPI. At the moment I am more interested in CAN message id's and data. However, I have made a mistake when defining/passing the variable for message count, thus some of the counts show negative values. ![]() ![]() This is a very good sign - it shows that the board is connected properly, CAN baud rate is correct and that the Arduino software works. After building the CAN sniffer with Elduino CAN128 board I wanted to see CAN messages in my old Ford Mondeo.Īfter connecting the board to OBD2 connector and turning on the ignition I started seeing quite a few packets.
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