Connor McMillan –

MS43 CAN BUS Decoder

As part of an effort in converting an analog cluster to a digital dashboard I’ve been slowly taking steps to approach the project to successful completion. I wanted to make sure I was a bit familiarized with Qt’s several APIs and I wanted to see the performance of Qt displaying real time information. I’ve put together a simple program which opens a serial connection to an arduino with a pre-loaded arduino sketch and reads the data, computes them to readable human units (RPM, MPH, etc) and displays them. Since this program was developed around by reverse engineering CAN BUS data packets from multiple BMW models, I found that during my initial test the speed (MPH) to be off by a certain degree, at one point I was speculating that the formula used to compute speed was being reported in KPH. More testing has yet to be done. The github page for this program can be found here. Improvements, questions, and concerns are always welcomed.


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