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Ben, that is so dang awesome. You are the man!!!!! There are a LOT of possibilities with that thing! You are taking that car to the next level! All the fancy $50,000 Volts and who knows have them, and your car is going to put them to shame!
Oh, I've been working on a BMS for Thundersky batteries. I'm done with the software on the ATTinys (well, ready to start testing), and I'm getting close-ish on the dsPIC30F4011. It should cost a few hundred dollars to monitor 48 batteries. BMS systems can cost thousands easily, so it will cut a couple thousand off the price of anyone trying to affordably (hahahaha) convert their car to Lithium. It should be noise tolerant, since CAN will be used in the transmission process. I haven't started initializing the CAN module yet. It's a whopper. I did the UART for debugging purposes, and the Change state notification module, and the timer1. I've been working on the ISR for the Change State. There are 8 ports that are being watched by the dsPIC. Each of those ports are used to receive morse code about the voltage levels of the 8 batteries it's monitoring. The ATTinys read the voltage of the battery they are monitoring, and the 0's and 1's of the battery voltage get sent by morse code to the dsPIC. Isn't that a sneaky idea!? Thanks Fran! There are no noise issues, as they are right next to their dsPIC, and have a direct line to their "dad" if you will.
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