Hey Electrified Miata team, just a quick update. We'll be taking this week off to go to the sold out "Fully Charged" here in Austin at the Circuit of the Americas (COTA) facilities. There we intend to learn more about the best practices and see what everyone else has done.
For those of you following along, last week, we left our story with a disappointing conclusion of the inverter going into a fault state after supplying all requirements according to this link. After some detailed investigation, two sources confirm that the minimum voltage the inverter needs is 240 volts, not 140. Most likely a simple typo, but details do matter. The service manual shows that a fault will occur for under voltage on the battery bus. The author of that document also has a detailed log on git-hub which shows he was using a near 300 volt supply. We don't know that this is our only remaining problem, but we are pretty sure that this is the current cause of the fault state.
In other updates, Joe has ordered and received the parts to make 3 BMS boards, but he's waiting on the printed circuit board itself, which may be two or three additional weeks. Bruce made great progress removing the rust from the go-kart and reinforcing the brake caliper mounts.
Thanks again for reading. It's not too late to join us for the fun - contact me (using this link if you don't have my number)