This sounds not so good. The power electronics seem ok but the gate drive board seems toast. Also note that fault signals are 5V. Not sure where you applied 12V? If to the SDU logic board you may have blown the and-gate IC5


My mistake , it was 5V not 12V. IC5 is working OK. Will check more on ...

Sorry, missed that. Merged the other topic to this one to have a better overview.

Alright, it is no easiest to check if there's an actual problem with the power stage or just a bad logic connection. Look at the second section here and report back: https://openinverter.org/wiki/Electronics_Basics ...

I am in Australia. Have narrowed the problem down to “fault A” on the Tesla main board. Do you know what that means ?

Pin 1 ie Fault A stays low

params.json Hi barracuda,

Here is some more info. I am using an open inverter board to control the SDU. Attached is a .json file with the parameters I am using.The wifi connection shows battery voltage and 12V supply. All the inputs are getting into the board as determined by the "spot check ...

Is there someone who can give me some assistance in geting a Tesla SDU drive working? I am happy to pay. The drive worked fine 4 years ago with the open inverter board, but now will not work.

Is there someone who can help me get an SDU board working ? I am happy to pay. This board worked 4 years OK but now will not run the drive. I know there is an option to get help but not sure if this is still working. So far I have spend $8000 on the vehicle plus $6000 on the motor plus 700 0n the ...

Now I realize that. The / was confusing to me. Dementia catching up. Now have downloaded stm32_sine.bin and board working

royhen99 wrote: ↑Sun Feb 02, 2025 10:07 am https://github.com/jsphuebner/stm32-sine/releases

Thanks ... but these releases do not include stm32_sine/foc.bin

OK ... but I am puzzled as to why the wifi interface says to downloadd stm32_sine/foc.bin

image1.jpeg image1.jpeg

Can some direct me to where I can download an stm32_sine/foc.bin file for SDU board ?

My board is V6 but does not have L2, just L3. The supply to the wifi module is measures at 3.4V, However I always have issues connecting on wifi (intermittent) and when I connect I can upload parameters OK but cannot download spot values - Just get a blank page. Does anybody have any ideas as to ...

This post is interesting and may explain the problem with my board, which worked fine 4 years ago but now will not connect reliably to wifi. It has an L2 inductor but not an L3 - is this a typo ?

Thanks very much for your reply Johu! Here's what I have done:-
- Checked the wifi module, It is the olimex one and I have bent the pins as you suggested. But no improvement.
- Some of the time I can connect on wifi but often when I use the browser to go to 192.168.4.1 its says address cannot be ...

I have Tesla SDU board which I bought 4 years ago and had it working fine with the help of Johannes. It has been idle in the garage for 4 years and I am trying to get it and associated motor working again. To start with I could not get consistent wifi comms , I managed to get them working long ...

Thanks Johannes, I think resolved now

If I change set boost to 1234, save to flash, then turn off and on again, 1234 re-appears
If I then change set boost to 4000, and then load from flash, I get the message "parameters loaded" but set boost still shows 4000 - however if I then do a refresh it goes ...

I can access the web interface OK on this board but have the following issues:-

1. If I change a value ( eg make “Fslipspnt” = 1) I get a “Set OK” message. If I then do a parameter download, the value I entered is not there, it is still zero.

2. If I do a save to flash, I get a message saying the ...