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Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 03, 2022 11:33 pm
by golfdubcrazy
Happy New year all :D

finally got some time to power up the board and look at the software.

just a silly question is there any recommended default parameters to start off with. i remember the being talking of a lower dead time and wasnt sure where the output for the 32v converter was from.

thought i better check the simple things before i start feeding in high voltage to the drivers

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Jan 04, 2022 9:50 am
by johu
The default of 1us seems to be working well. Apart from that just set snshs to i3. That will also read the voltage from the gate drive board via SPI

Re: i3 controller hacking from diyelectriccar.com

Posted: Wed Jan 05, 2022 12:39 pm
by golfdubcrazy
Thanks Johu,

yep the i3 option wasnt on the parameters page on the wiki so i missed it.

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 10, 2022 6:53 am
by Scott166
Hi all,
I haven't got round to building the board yet but...
As I'm using a car without Can what will I need to do differently?
Tia

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 10, 2022 8:21 am
by johu
The board has all relevant traditional inputs so you don't need CAN.

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 10, 2022 9:51 am
by Scott166
johu wrote: Tue Dec 14, 2021 9:16 pm oh and I still have to write an info sheet. Just post here if there are any questions. I'll just make the wifi PW public now: dsEuX51n
Is there an info or instruction sheet for assembling the board? Is the a GitHub link or anything to follow?

I want to test without using the full battery pack, what voltage do I need to make it spin at all?

Thanks everyone, we're getting close now 😃

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 10, 2022 9:52 am
by Scott166
johu wrote: Mon Jan 10, 2022 8:21 am The board has all relevant traditional inputs so you don't need CAN.
Thank you, I've just watched you parameter video, extremely useful once again.
You're doing an amazing job with this

Re: i3 controller hacking from diyelectriccar.com

Posted: Thu Jan 13, 2022 11:01 am
by Scott166
A friend of mine has soldered the board for me, hopefully if work is light tomorrow I can start on the inverter. He's done some video and pics for me so they'll go up on my YouTube channel when it's in the inverter.

Re: i3 controller hacking from diyelectriccar.com

Posted: Fri Jan 14, 2022 3:14 pm
by Hans Gustafsson
Have updated resolver wiring to my latest belief.

1. 12V
2. BRAKE_IN
3. PRECHARGE_OUT
4. CANL
5. CANH
6. DCSW_OUT
7. FORWARD_IN
8. REVERSE_IN
9. 5V (OUT)
10. RESOLVER_S2/ENCODER_A Blue (Sin2, Sin L)
11. GND
12. RESOLVER_S1 Red (Cos1, Cos H)
13. THROTTLE1
14. THROTTLE2
15. RESOLVER_R1 Yellow (REF1, Ex H)
16. RESOLVER_S3/ENCODER_B White (Cos2, Cos L)
17. MTEMP+ Blue
18. MTEMP- Grey
19. RESOLVER_S4 Brown (Sin1, Sin H)
20. EMCYSTOP_IN
21. GND
22. RESOLVER_R2 Green (Ref2, Ex L)
23. START_IN

Re: i3 controller hacking from diyelectriccar.com

Posted: Fri Jan 14, 2022 10:40 pm
by golfdubcrazy
hopefully this helps.

A_SIN_HI and A_SIN_LO
Setpoint value: 22.4 ohm to 33.6 ohm

A_COS_HI and A_COS_LO
Setpoint value: 22.4 ohm to 33.6 ohm

U_POS_HI and U_POS_LO
Setpoint value: 13.6 ohm to 20.4 ohm

Nominal values

‐-20 °C 318 kOhm
‐10 °C 175 kOhm
‐5 °C 132 kOhm
0 °C 101 kOhm
5 °C 78 kOhm
10 °C 60 kOhm
15 °C 47 kOhm
20 °C 37 kOhm
25 °C 30 kOhm
30 °C 24 kOhm
40 °C 16 kOhm
50 °C 11 kOhm
60 °C 7 kOhm

1VnXZG6REc.jpg

Re: i3 controller hacking from diyelectriccar.com

Posted: Sat Jan 15, 2022 10:59 am
by johu
Good, will add that. Matches none of the existing sensors unfortunately.

Re: i3 controller hacking from diyelectriccar.com

Posted: Fri Jan 21, 2022 12:18 pm
by Scott166
Hi all
Has anyone got a base parameter set yet? I can't see anything for the i3 on the parameter database
Tia

Re: i3 controller hacking from diyelectriccar.com

Posted: Fri Jan 21, 2022 4:14 pm
by Scott166
I've just popped a video up on my YouTube channel showing me replacing the two boards of anyone is interested. I know most of you are ahead of me but thought it might be interesting.
I'm now looking at the parameters but if anyone else has made a start please could you give any details of what you are setting? I have managed to do the basics like polespairs (6?) Voltage (360?) Snshs to i3 and throtramprpm to 11400?
Cheers

Re: i3 controller hacking from diyelectriccar.com

Posted: Fri Jan 21, 2022 7:42 pm
by johu
Very cool to see the other end :)
I noticed that I forgot to close SJ3 for you: https://openinverter.org/wiki/Mini_Mainboard
Just put a solder blob on to the direction of C4 on there.

Also understood now that the resolver always comes in on that red connector, would be neat to be able to plug it right in.

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 31, 2022 7:22 am
by Scott166
Image

I'm not sure how to add photos on here, if this works is this where you want the solder Johu?

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 31, 2022 8:26 am
by Scott166
I can't post a photo
Do you mean the centre connection to the connection on the right (nearest C4)?

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Jan 31, 2022 5:17 pm
by johu
You can post photos in the attachment tab below the editing field

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 01, 2022 1:10 pm
by Scott166
Image

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 01, 2022 7:10 pm
by johu
Exactly, that one, those two pads

Re: i3 controller hacking from diyelectriccar.com

Posted: Mon Feb 21, 2022 5:25 pm
by Scott166
I've bent the backing plate using a socket and vice to give clearance to the board. Is anyone else looking to put the plate on top of the board too?

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 22, 2022 9:34 am
by Scott166
Putting the bits back together as someone mentioned on here before the board comes into contact with one of the bolt holes from the upper plate. If the small board could be moved 4 or 5 mm towards the edge it would have clearance.

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 22, 2022 9:38 am
by Scott166
Bugger, I have signs of overheating already on the 6th pin from the right, any ideas?

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 22, 2022 11:08 am
by johu
Why do you think it's overheating? I can just see some excess flux. There is no serious current on any of the pins

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 22, 2022 3:46 pm
by Scott166
I’ve managed to file the upper plate bolt retainer without going through to the thread, hopefully that’s enough clearance

Re: i3 controller hacking from diyelectriccar.com

Posted: Tue Feb 22, 2022 4:23 pm
by Scott166
I’ve had to reshape the lid a bit, pushing it out away from the board between the two lines.