Ahh, ok. I assume that is the contactor coil shown in the diagram on the Main and Pre-charge lines. So the OpenInverter board pulls them low when it switches them on.

Makes perfect sense now thanks.

I have a Tesla SDU with OpenInverter board and a repackaged MG ZS EV battery. The MG battery comes with a 'penthouse' with contractors and pre-charge relay. The wiring to the OpenInverter comms connector shows lines for 'main contractor [sic] relay' (P3) and 'pre-charge relay' (P11) Screenshot 2024-...

Boxster EV wrote: ↑Tue Apr 30, 2024 12:10 pm Outputs from LDU used on my Porsche here:

viewtopic.php?p=49997#p49997

I didn’t see anything about the RPM Signal

Unfortunately the sdu board doesn't export the pwm signal so you will need something external to drive the cluster I've got the output side of the project working: https://youtu.be/jkfO0K9v1hA About to start work on the input (Canbus) side. But anyone know what this is? Screenshot 2024-04-30 at 1.2...

arber333 wrote: ↑Fri Mar 01, 2024 2:48 pm I may have some boards left for populate by hand if you want to build yourself. Or i can... PM me.

Cheers. I'll see where I get to with Arduino and get back to you.

I just ordered some MPC2515s to play with.

I'll look into the CANDue board too.

Ok. In that case I need to catch and interpret the canbus packets and input to the arduino. Be interested in any links to those that have already done this.

johu wrote: ↑Fri Mar 01, 2024 6:44 am Unfortunately the sdu board doesn't export the pwm signal so you will need something external to drive the cluster

Really? How are others deriving a speed signal?

I’m at the point of integrating the Tesla SDU with the Honda S2000 electronics, specifically the dash cluster. lheTEPg.jpg I’d like to display speed (of course), amperage (on the tachometer), state of charge (fuel gauge) etc. First step is converting the OpenInverter's RPM output to the S2000's Vehi...

I read through this thread and managed to follow the instructions, with some modifications.

I produced a video on my YouTube channel.



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