Search found 246 matches

by vwbrady
Tue Apr 18, 2023 2:45 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

Please update the BSM firmware according the instructions in the end of the user manual: https://github.com/Tom-evnut/SimpBMS/blob/master/Simp%20BMS%20Setup%20Manual%20V0.29.pdf Alot has been updated since the firmware version 28818 followed the firmware update process and display still does not up...
by vwbrady
Thu Mar 16, 2023 2:48 pm
Forum: Tesla
Topic: Tesla Model 3 Rear Drive Unit Hacking
Replies: 635
Views: 130260

Re: Tesla Model 3 Rear Drive Unit Hacking

HV Connector for Model 3 RDU (wiki updated) I took these photos to share with Damien over on Patreon and thought they'd be useful for this thread. Weirdly the TE connector has a printed on part number that TE doesn't have published anywhere 2-2840440-1. The connector is from their HC STAK line and i...
by vwbrady
Sat Mar 11, 2023 3:27 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

Will do. Figured that's what was needed.
by vwbrady
Fri Mar 10, 2023 4:52 pm
Forum: Events and Meetups
Topic: Calling all United States Members - Potential Meet Up?
Replies: 33
Views: 22956

Re: Calling all United States Members - Potential Meet Up?

I created a shared Google Map so people could add themselves that way. I've added people that have posted or liked already. This makes it a little easier to see where people are. There does seem to be a slight cluster in the Washington / British Columbia area, but still WAY outside my 45mi EV range ...
by vwbrady
Fri Mar 10, 2023 4:37 pm
Forum: Tesla
Topic: Tesla Model 3 rear subframe/suspension, 3D scanned and reverse engineered
Replies: 4
Views: 604

Re: Tesla Model 3 rear subframe/suspension, 3D scanned and reverse engineered

Hello everybody, I am working on converting a 1949 Cadillac Sixty Special to electric via a Tesla Model 3 donor car. As part of the initial teardown stages, I took off the rear subframe and the suspension arms and 3D scanned / reverse engineered them in an assembly. I posted the results on Reddit a...
by vwbrady
Fri Mar 10, 2023 4:31 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

it's hard to see in the video, but the display is V1.0.0

video shows the key cycle that updates the SoC meter. The photos are the SoC and voltage prior to trip.
by vwbrady
Thu Mar 09, 2023 6:34 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

Okay that is weird as it does get broadcast as you can see the voltage change. Can you confirm which display file and SimpBMS firmware you using? I purchased the setup through kitoffgrid like 2 years ago and haven't updated any firmware. I'll take a look and maybe record a short video when I get ho...
by vwbrady
Thu Mar 09, 2023 6:08 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

You are responsible for the design in the end of the day, if the BMS has no way of interacting with the charger and stopping it that is up to you. I do not know how you are controlling it with PWM, I would highly recommend having something look at the can bus messages from the SimpBMS and set targe...
by vwbrady
Thu Mar 09, 2023 6:02 pm
Forum: Tesla
Topic: Tesla Model 3 Rear Drive Unit Hacking
Replies: 635
Views: 130260

Re: Tesla Model 3 Rear Drive Unit Hacking

I think that the heat scenario is valid for nominal power. All other powers are very short duration. So yes you need to cool that but nominal won't be used all the time either so laying out for nominal with enough thermal mass should do it. Agree with EV Builder. 5kW of heating might be necessary i...
by vwbrady
Wed Mar 08, 2023 4:32 am
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

tom91 wrote: Tue Mar 07, 2023 12:36 pm So the charger does not listen to the SimpBMS ?!?
I've not been able to get the charge enable output to come on until the tip from Roy, so no I guess it doesn't!

BTW I'm using a Chevy Volt charger—the one with the PWM control input.
by vwbrady
Tue Mar 07, 2023 5:36 am
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

This came up in another thread a few weeks ago. The hysteresis value is too high and also the battery is almost fully charged. I am not totally sure on this but If you reduce the charge hysteresis to 100mV it might work. Thanks, Roy. I reduced the hysteresis but then realized all the time I've spen...
by vwbrady
Tue Mar 07, 2023 4:44 am
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 631
Views: 188684

Re: Simp BMS

J5 is input J4 has the outputs on it, these are matched to BMS states. Pin 13 is the 12V charge enable, so if the BMS is in the charge state this output is on. https://github.com/tomdebree/SimpBMS/blob/master/Simp%20BMS%20Setup%20Manual%20V0.21.pdf I realize the above is a very old post, but after ...
by vwbrady
Sun Mar 05, 2023 4:59 am
Forum: Events and Meetups
Topic: Calling all United States Members - Potential Meet Up?
Replies: 33
Views: 22956

Re: Calling all United States Members - Potential Meet Up?

Also Washington State, Seattle area.
by vwbrady
Sun Feb 19, 2023 6:08 pm
Forum: Nissan
Topic: Leaf Gen 1 Inverter Board
Replies: 299
Views: 128481

Re: Leaf Gen 1 Inverter Board

I have the inverter and the VCU on different switches - inverter is on a reliable toggle and the VCU is on ignition. The Inverter was killing my 12v battery when it had a KL30 connection. I found the same behavior as you when I would turn the inverter switch on too early. The inverter clearly has so...
by vwbrady
Sat Feb 11, 2023 4:15 pm
Forum: Projects
Topic: Project VW Cadd-E, Leaf/Volt/Mercedes + Mk1 VW
Replies: 133
Views: 25002

Re: Project VW Cadd-E, Leaf/Volt/Mercedes + Mk1 VW

isnt it so awesome? it all just...works....so much so you forget what went into it.. The relative simplicity of the EV system I think contributes the most. After this winter I needed to move some cars around and after not touching this truck for months I turned the key to see what would happen. I w...
by vwbrady
Fri Feb 03, 2023 7:20 pm
Forum: Projects
Topic: Project VW Cadd-E, Leaf/Volt/Mercedes + Mk1 VW
Replies: 133
Views: 25002

Re: Project VW Cadd-E, Leaf/Volt/Mercedes + Mk1 VW

It's been a while! I guess that happens when you reach the "road-worthy" milestone. This truck has just worked... It's easily my most reliable, non-modern, car I own. This past summer I nearly drove it everyday including a few 40mi trips on i-5 down to Seattle. It even does truck stuff lik...
by vwbrady
Thu Dec 15, 2022 6:38 am
Forum: General
Topic: Datalogging Voltage / Current
Replies: 1
Views: 360

Re: Datalogging Voltage / Current

nm, found a power supply that I think will work. We'll see how it goes. it's a RIGOL DP813A
by vwbrady
Wed Dec 14, 2022 11:14 pm
Forum: General
Topic: Datalogging Voltage / Current
Replies: 1
Views: 360

Datalogging Voltage / Current

I don't have any experience in this area, but have a need for a plug and play off-the-shelf means of datalogging battery tests.

max 4.5V, but 300+ Amps would be preferred. 50A at least.

What are common tools used for this?
by vwbrady
Thu Nov 17, 2022 7:17 pm
Forum: Chevy/Opel/Vauxhall/PSA
Topic: Chevy Volt Gen 2 charger 24281923
Replies: 85
Views: 26998

Re: Chevy Volt Gen 2 charger 24281923

any key will work with a little trimming :P
by vwbrady
Fri Nov 04, 2022 4:19 am
Forum: Tesla
Topic: Tesla Model 3 Rear Drive Unit Hacking
Replies: 635
Views: 130260

Re: Tesla Model 3 Rear Drive Unit Hacking

Jack Bauer wrote: Thu Oct 27, 2022 1:43 pm This topic is relating to open source solutions for running the model 3 drive units not commercial closed systems.
Where's the like button on this post?
by vwbrady
Tue Oct 18, 2022 6:42 pm
Forum: Classifieds
Topic: A few things in the PNW (USA)
Replies: 5
Views: 692

Re: A few things in the PNW (USA)

Leaf Chademo Asm
Leaf Chademo assembly
Leaf Chademo assembly
by vwbrady
Tue Oct 18, 2022 6:41 pm
Forum: Classifieds
Topic: A few things in the PNW (USA)
Replies: 5
Views: 692

Re: A few things in the PNW (USA)

Leaf BMS stuff PXL_20221016_210853814.MP.jpg PXL_20221016_210915988.jpg PXL_20221016_210910804.jpg PXL_20221016_210857573.jpg enough connectors and pins for 2+ BMSs PXL_20221016_210958851.jpg GM Volt J1772 inlet (CCS1) PXL_20221016_211056736.jpg Leaf PDM stuff PXL_20221016_211115120.jpg PXL_20221016...
by vwbrady
Wed Oct 05, 2022 6:05 pm
Forum: Battery Managment (BMS)
Topic: Nissan Leaf BMS
Replies: 150
Views: 436520

Re: Nissan Leaf BMS

Here's my question: Would I be able to use a 24 kwh leaf battery pack at half the voltage and double the amp-hours (so going from 96S2 to 48S4) and still be able to use the leaf BMS? Obviously re-arranging the busbars :) at that point you'd only be using 48 of the BMS cell measurements. Not sure an...
by vwbrady
Wed Sep 28, 2022 8:53 pm
Forum: Projects
Topic: [DRIVING] The Audi 8e - Powered by Leaf
Replies: 146
Views: 50063

Re: The Audi 8e - Powered by Leaf

An you luck with regen? I've recently ordered an OI leaf board from Johannes and am going to probably switch over to that later this winter. Just seems like a better supported hardware option. Then maybe sell or repurpose the VCU to do other things. Or maybe another conversion I have in mind. (impor...
by vwbrady
Mon Sep 19, 2022 10:50 pm
Forum: Tesla
Topic: Tesla Model 3 Rear Drive Unit Hacking
Replies: 635
Views: 130260

Re: Tesla Model 3 Rear Drive Unit Hacking

glad to hear im not the only one hoarding a Model 3 RDU.