Moving sale, haven't touched these boards in a year or so. SDU board was in my conversion for a time, Gen2 Prius was only used for inverter testing. SDU has current sensors soldered in, these can be removed if you like. No connectors included, only what's in the pictures. SDU board: $150 obo shipped...

CAN1 has internal CAN termination resistor. You need to have 2 termination resistors, ideally at the 'ends' of the bus.
It really isn't too fussy at low bitrates over short distances.
With a Leaf stack you may have to be more careful, just remember that you have a resistor in your shunt.

Eltis wrote: ↑Sun Oct 16, 2022 12:16 pm Battery current "LSB"
Battery current "MSB"
Hello. Can you please explain what these abbreviations mean?
sorry for the stupid question

Least significant byte and most significant byte.

Hm... no i tries that already and it just stoped charging. No tapering of current... this is why i wanted to setup tapering. Do you think i should setup greater difference? As in 390V for charge and 394V for max? That should work better. I believe the max is also so the EVSE knows how high the pack...

HM... so it would be desirable that settings.maxChargeVoltage would be set lower than settings.targetChargeVoltage ? I guess i attributed a lot more importance to settings.maxChargeVoltage when it just seems to be a limit when tapering occurs. Can you confirm this logic for me? So if i set settings...

We use the targetCurrent variable to reduce charge current. if (Count == 20) { if (evse_status.presentVoltage > settings.targetChargeVoltage - 1) //All initializations complete and we're running.We've reached charging target { //settings.ampHours=0; // Amp hours count up as used //settings.kiloWattH...

Very sorry to hear that. Did you program your contactor to open on trip events? I think I had it keep them closed, as after a trip all I had to do was let off throttle for it to restart (that was the behaviour with that new option IIRC). When the whole inverter went dead short it popped my fuse pre...

Sorry to hear that. Do you have any idea what went wrong? I've now built a new parameter set from scratch, which I successfully tested with no load. It would be nice to know if it's going to blow up though! I was working from 2 examples, yours and one from ZeroEV. Based on your bad luck, I think I ...

I'm finally ready to get my SDU spinning in my car. Do you have an updated / final / tuned SDU parameter set? If so, please could you share it, otherwise what you already posted above looks pretty good, in line with what I've seen others using. I notice that you don't use udcnom, but is this parame...

Here's a baseline test of inverter functionality that I ran today. I've used my inverter to drive small DC motors and it seems to be very functional. Wiring as follows. I9 gets 12v and ground. HV into inverter (this being 12v at the moment). On the white 32-pin: (I10 I think?) Ground to pin 16 (blac...

Which CAN bus are you on? And which firmware version is this? I think I had ISA on one bus and the EVSE on the other bus just to avoid any issue with bus load (also so you can have ISA talking to the rest of the car).

Hmm. Going through isolation and getting contactors on means CAN is working up to that point. Error 32 is just "EVSE_STATUS_STOPPED" -- nothing really helpful there, but it means the car didn't throw the error, the station did. Hmm. When D2 turns on (goes to ground) it should pull IN2 low....

So, I tried another foolish plan before I checked back here. If I was erroring out because UDCMAX was exceeded, why not just crank up my UDCMAX? So I cranked my UDCMAX to the max of 1000v. Same behavior, 1 second or precharge and then the relay shuts off, but, different errors now. No UDCMAX error....

Very legit. Well done!

Ah, sorry, missed those somehow. Very interesting that it's measuring high. Have you calibrated the voltage sensor? It's a 2 step process, one with no HV and one with HV. No HV: Offset to 0, gain to 1, then read udc; set offset equal to udc reading. Then with HV: Gain to make udc match your actual H...

Hmm. What are the output states? (Can't remember if those show up in the interface!) Also, remembering precharge and main behaviour. At the moment, your precharge powers up on boot, then turns off after a second or two. Correct? Precharge should turn on as soon as the board boots. So that part's fin...

-Wiki contains enough info to get the system running. I used a bare STM32 board with a ULN2001 and OI software to get some lightbulbs flashing (using your documentation). I used the 'schematics and instructions' page for the needed commands. https://openinverter.org/wiki/Schematics_and_Instructions...

A few questions I can answer off the bat. -Wiki contains enough info to get the system running. I used a bare STM32 board with a ULN2001 and OI software to get some lightbulbs flashing (using your documentation). I used the 'schematics and instructions' page for the needed commands. https://openinve...

Pin 2 of Chademo plug? As in the supplied power from the station? Pin 7 (proximity) doesn't pull hard enough to ground to activate a standard automotive relay. Pin 2 is however intended to send power through the contactors, so it should have at least a few amps of burst capacity (and seems to do fin...

Minimal modification. Take the 12ish bolts off for the inverter, remove phase cables, unplug connectors. Then you take out the original board. (Few more bolts). The difficult part appears here. You need to desolder the two current sensors which protrude from the original board, then solder them into...

Leaf pack is not enough power for an LDU. Cells will be very unhappy with the discharge amount and you'll get lots of sag.
LG Chem cells, such as found in Chevy Volt packs, are more suitable, and of course Tesla batteries can handle the power.

Isaac96 can you suggest where do you connect ISA shunt 12V power to? I mean do you keep it on all the time or just when chademo is active? Would pin7 (12V 500mA) and pin17 (gnd 500mA) of molex 20pin connector suffice for that application? How do you connect it? tnx A Since I also used it for SOC I ...

Even my "small" motor here is 100lbs. Eesh. And no bolts for the power cables, might have to wait to tonight until I find some before I do motor tests. https://mattsawesomestuff.com/Projects/Vehicles/Opel/Opel%20EV%20218.jpg Another good test is using three lightbulbs connected across the...

In the US probably. What's weird is that they appear to be using 48v systems instead of a proper battery voltage. So their motors have many parallel phases. I saw 210A per phase quoted somewhere for a total of 200kw per motor, 800kw total. GT3 brakes, center lock wheels. Also it looks like they were...

Assuming the charger is programmed more or less like a standard inverter: -Flash ESP8266 with whatever it needs (spiffs, html files, etc.). Sounds like you've got this done. -Flash STM32 on the charger board using ST-Link. First stm32_loader, then stm32_charger (latter can be done using ESP8266?). h...