EV Beetle Conversion Project

 Browsing eBay, I chanced upon a VW Golf GTE contactor box, I've had 2 of these before, but butchered them to take control of the contactors directly, but this time I wanted to know more. My main aim is to reuse the isolation monitoring circuitry for extra safety, but baby steps. The easiest thing would be getting control of the contactors first, as it's pretty obvious when this is happening, they click closed. So this thing is still holding some secrets, but so far I've got the voltage message decoded and control of the contactors. This thing also reports current, though I'm not sure what message that is on, I'm not sure how to activate the isolation monitoring and if it does any sort of tracking of energy in and out, yet.  https://github.com/jamiejones85/VW-GTE-ContactorBox is the current example code for interacting with the box. UPDATE I've got it cracked, I can now ask it to perform an isolation test and interoperate the result. Very happy with this. Now to

 I was never happy with the Due chademo solution, and I do like the ESP32 so a while back I set about designing a new board. It's designed to fit in an ECU type enclosure, so looks much better. The software and hardware files are open source here: https://github.com/jamiejones85/ESP32-Chademo I also intend to setup a web shop at some point and make these available if anyone wants one. Anyway, below is a video of it in action.