openinverter forum

If possible keep power,ground and CAN lines the same as oem on the white connector that way I can just drop this straight into my inverter.

Jack Bauer wrote: ↑Tue Aug 20, 2019 7:02 am If possible keep power,ground and CAN lines the same as oem on the white connector that way I can just drop this straight into my inverter.

We should dubble check the pinout of Johannes board against our inverters which we drive over CAN at the moment.

Yes thats what I tried to do. Please check if I succeeded. Any luck poking around?

Mounting holes done. Now only bus voltage and general pin verification by someone with an original controller is missing

*Bump* please someone find the DC voltage

johu wrote: ↑Fri Sep 06, 2019 4:28 pm *Bump* please someone find the DC voltage

I'll see if I can get some time to search for it this weekend. Do you have any clue how to measure it?

You would need to be able to vary your DC bus voltage and then check if one of the pins on CN3 changes proportionally. I have painted the unknown ones in red. Also measure in frequency mode to check if its a PWM signal (like on Gen2).
Measure with a clip and turn on power when the clip is secure to avoid shorting out anything

I had a look today and could not find an analog signal that seemed to represent dc link voltage. I only had a multimeter so could be some strange pwm thing. I really need a pocket scope:)

Damn it.. I mean thanks for checking
Even if it were PWM your multimeter would convert it to a voltage. So now I can either skip DC voltage which would disable meaningful precharge control or wire the remaining pins to a jumper link.

johu wrote: ↑Fri Sep 06, 2019 6:11 pm Damn it.. I mean thanks for checking
Even if it were PWM your multimeter would convert it to a voltage. So now I can either skip DC voltage which would disable meaningful precharge control or wire the remaining pins to a jumper link.

FOC doesnt need DC link voltage does it?
You could just make precharge function of time . But there would have to be clear instruction to use such and such resistor!

Ok, I added a 3-way jumper that lets you try out 3 possible inputs on CN3 for bus voltage. Also added possibility for pull-up or down resistor.

No, FOC doesn't really need the voltage, at least not per the current implementation.

So Gerber files attached, does anyone with a Gen1 Leaf want to get some boards made?

Mini BOM:
CN1: GT8E-4P-DS
CN2: TE AMP 1318384-4
CN3: GT8E-16DP-DS
CN4: GT8E-12DP-DS
CN5: GT8E-8P-DS
CN6: GT8E-5P-DS
R1: 120 (optional)
R2: 1k2

johu wrote: ↑Fri Sep 06, 2019 6:11 pm Damn it.. I mean thanks for checking
Even if it were PWM your multimeter would convert it to a voltage. So now I can either skip DC voltage which would disable meaningful precharge control or wire the remaining pins to a jumper link.

Over CAN-bus do we get the DC-voltage reading so some how is the logic board measuring it.

See my attachments.

This is the PCB that residents the IGBT:s, it looks like an array of resistors in the middle that goes somewhere on the board. I have measured it and there is contact with the incoming positive DC-voltage on that resistor array.

That looks very similar to the gen2 driver board. Looks like the other end of those resistors bugger off to the logic section on an inner layer.
I'm sure it must show up somewhere.
Why does the connector have a different pin count to the one on the controller?

johu wrote: ↑Fri Sep 06, 2019 10:13 pm That looks very similar to the gen2 driver board. Looks like the other end of those resistors bugger off to the logic section on an inner layer.
I'm sure it must show up somewhere.
Why does the connector have a different pin count to the one on the controller?

I attached an overview of the connectors/colours of the bottom PCB.

So Gerber files attached, does anyone with a Gen1 Leaf want to get some boards made?


Hi Johannes,

My first post on this forum. Totally a newbie and a mechanical engineer not electrical! I have a Gen1 that I am building a E-Truck out of. I am willing to pay the cost toward making some of these boards. I can use one. Let me know how to proceed. We typically use pcbway.com. They offer great quality and quick turn around.

Cheers

I ordered mine from JLCPCB, came with 5 in total.

Great, finally this got made.
The picture isn't visible, please attach it to the thread.

The image is hosted by google, it is probably still private.

Ok, so all the components from the BOM above have arrived and been put on (except for R1, was confused as to if that is a 120 Ohm resistor or not?) I'm guessing I'll need the Revision 3 brainboard on the webshop, just like with the Gen 2 inverter board? Please let me know if you can't see the image.

That image doesn't work, sorry.

skyguy6153 wrote: ↑Mon Nov 18, 2019 10:48 pmPlease let me know if you can't see the image.

Please post images as attachments because we've all experienced third part hosting sites changing their policies and making threads unreadable.

It's not letting me post the photo on here. Becoming frustrated with this so if you want to see it, I've put it on my Instagram page. Sorry for any annoyance. https://www.instagram.com/p/B5BksODH76d ... sbhrb0pbdm

I tested your permissions, you should be able to upload files. Can you make a screenshot of any error message (and post it on instragram )

Some months alter I thought I should grab the photo from instagram