Search found 276 matches

by alexbeatle
Fri Jun 13, 2025 2:46 am
Forum: Projects
Topic: [WIP] Voltswagen T2 -76
Replies: 156
Views: 69789

Re: [WIP] Voltswagen T2 -76

Well done!

…. I don't fancy the idea of extra T-fittings in the lines, weight of the sensors and all the brake fluidy mess if they ever need replacing. Seems easier to install electronic switch somewhere in the linkage for brake lights.

Good call. Lost my brakes already because of the inline ...
by alexbeatle
Thu Jun 12, 2025 3:55 pm
Forum: User Interface
Topic: DIsplay for EV conversion
Replies: 4
Views: 172

Re: DIsplay for EV conversion


If anybody has an idea of what else should be on the main screen please let me know. There is still some space.

Would be nice is a real programmer would work on this.

Screen.png


Looks awesome! I use nexion display too - but a small one.
To keep it clean, for the main screen I just display ...
by alexbeatle
Sat May 03, 2025 9:48 am
Forum: General
Topic: Fisker Ocean
Replies: 9
Views: 7592

Re: Fisker Ocean

Does anybody have dbc files for the CAN?
I only found the following, but it’s not comprehensive.
https://github.com/puddletools/CAN/blob ... kerDBC.dbc
by alexbeatle
Thu May 01, 2025 1:35 pm
Forum: Vehicle Control (VCU)
Topic: VAG heater on Zombie
Replies: 9
Views: 4573

Re: VAG heater on Zombie


Anyone planning to use the VW heater MUST install it upside down that is with the power sockets at the bottom as you get mini explosions due to inner airlocks inside the heater.

Should the coolant flow be reversed then too, to enter through the physically lower port and exit via the physically ...
by alexbeatle
Mon Feb 17, 2025 4:00 am
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: VW electric coolant heater
Replies: 24
Views: 23303

Re: VW electric coolant heater

Anybody tried uart to LIN converters to communicate with this heater?
Example..
https://a.co/d/5N3NRo1
by alexbeatle
Sun Jan 26, 2025 2:53 am
Forum: Projects
Topic: The Greg's Grid Tie Solar Project
Replies: 219
Views: 252201

Re: The Greg's Grid Tie Solar Project


An HOA community is perfect for the type of people who want all the expenses, responsibilities, uncertainties and liabilities of owning a home, but who miss the restrictiveness of only being a renter!

Every HOA is staffed by people who's passion in life is being a know-it-all busybody, who've now ...
by alexbeatle
Thu Jan 23, 2025 2:56 am
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: VW electric coolant heater
Replies: 24
Views: 23303

Re: VW electric coolant heater


I got my hands on the same heater model for cheap as well - cheap enough for the risk of not being able to successfully reverse engineer the communication. Worst case I will open the electronics and see what I can find in there. So far I am pretty confident that it is an Eberspächer Titronic CHHV ...
by alexbeatle
Thu Nov 28, 2024 6:12 pm
Forum: General
Topic: EV car conversion hardware
Replies: 279
Views: 2455082

Re: EV car conversion hardware

Dlud wrote: Thu Nov 28, 2024 6:04 pm Anyone have a source for Tesla 4 or 3 way coolant valve electrical connector?
https://www.evcreate.com/shop/cooling-s ... ector-kit/
by alexbeatle
Mon Nov 04, 2024 5:16 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 730
Views: 460853

Re: Simp BMS


There is some thing strange going on, on your final module the delta across the module is the largest. Is the cable used there properly fastened?

Thank you. I'd say the connection looks good. That was my first check.
As part of this fast charging test I was aiming for 80% SOC, so this is the ...
by alexbeatle
Mon Nov 04, 2024 5:26 am
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 730
Views: 460853

Re: Simp BMS

As I continue my fast charging tests, would you say it is expected for the most positive module to be the hottest?
All in series. 1 most negative, 14 most positive.
After charging from 53% to 73%, starting at 125A, but gradually reduced to 85A by the BMS.
image.png
by alexbeatle
Wed Oct 30, 2024 10:57 pm
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

I found the manufacturer of the EVGo station - the infamous ABB Terra 53 and 54, side by side.
Looks like these had issues, but resolved here.

https://vimeo.com/646928184

I have LIM from 2015 and the OEM i3 charging inlet socket. So all of the wires are from the inlet to the LIM plug directly ...
by alexbeatle
Wed Oct 30, 2024 5:17 pm
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

I fixed the issue with the time-to-charge by dividing Full_SOCt and Bulk_SOCt by 10 before sending to LIM. This is indicated by the dbc and the comments in the Zombie code, but doesn't look like is implemented in the code itself.

//Lim command 2. Used in DC mode
uint16_t V_limit=0;
//if(lim_state ...
by alexbeatle
Tue Oct 29, 2024 4:43 pm
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller


If you are using the "standard" BMW I3 contactors do not do this, anything above 100A for long periods will cook the contactors.

Thanks for checking. My LIM drives TE 2203194-1 contactors which have 15.3Ohm coil resistance to make LIM happy. I use these then to drive a pair of KILOVACs EV200 ...
by alexbeatle
Tue Oct 29, 2024 4:22 pm
Forum: Projects
Topic: 2008 Nissan Quest Van with Tesla SDU.
Replies: 239
Views: 499019

Re: 2008 Nissan Quest Van with Tesla SDU.


The Tesla end of the CV axle were stuck in the motor. Normally you just have to pry them out and they come out of the motor. it took me 7 hour to get them out and I had to use a hammer intensively on them.

Not sure if you're aware there's a very inexpensive tool for removing axels. Love tools ...
by alexbeatle
Tue Oct 29, 2024 5:42 am
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

Lots of different forums claim EVGo is no good - random charging fails, randomly some cars can charge while others can't. The person charging his car today told me his car would fail to charge few hours earlier, but worked this time and he finds this to be a normal practice.
Not sure what to think ...
by alexbeatle
Mon Oct 28, 2024 11:35 pm
Forum: Tesla
Topic: (SDU, OI board) control of derating via CAN, from BMS
Replies: 10
Views: 2653

Re: (SDU, OI board) control of derating via CAN, from BMS

How do you find the drive performing with dynamic idcmax/idcmin at 48ms repetition?

I tried mine last night setting idcmax dynamically per BMS and I would sometimes get the drive to studder when I'd accel.
Theories:
1. Need to increase the frequency of BMS update - currently ~600ms (default BMS)
2 ...
by alexbeatle
Mon Oct 28, 2024 5:37 am
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

Went back to the EVGo today - no go. Fails on the CableTest again. Attaching logs. I saw a car successfully charging on it before me, though.
Today I added LIM contactor re-test code thinking this was the issue. I can hear contactors toggling when I initiate the re-test and they return A-OK status ...
by alexbeatle
Sun Oct 27, 2024 5:52 am
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

I attempted to charge at a different network today - EVGo. Unfortunately, not successful.
Plugged in vehicle, payment authorised, but within seconds says comm failures with the vehicle.
There were 2 stations. The second one was occupied, but I saw the driver had to start his charging session twice ...
by alexbeatle
Thu Oct 24, 2024 6:19 pm
Forum: Tesla
Topic: SDU high current consumptions?
Replies: 46
Views: 14252

Re: SDU high current consumptions?


image.png


I believe this is the area that I refer to here that gets warm. Looking from the inside is that some kind of isolation monitor? Suppose to be warm?
IMG_5134.jpeg
I can see now why the inverter needs to be vacuum filled, there’s a section for the coolant that’s above the outlet port ...
by alexbeatle
Wed Oct 23, 2024 5:45 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 730
Views: 460853

Re: Simp BMS


if (bms.getLowCellVolt() < (settings.DischVsetpoint + settings.DisTaper))

Literally here.

Your settings:
settings.DischVsetpoint = 3200mV
settings.DisTaper = 300mV

So if your cells are below 3500mV limit discharge.

The settings for Discharge Hysterisis is for allowing discharge again when ...
by alexbeatle
Wed Oct 23, 2024 5:02 pm
Forum: Battery Managment (BMS)
Topic: Simp BMS
Replies: 730
Views: 460853

Re: Simp BMS

Hi, there.
Could you please help me understand. I don't quite see why my discharge current gets derated. I have max discharge set to 150A, but this morning BMS derated it to 30A. I didn't capture it at 30A, but below is the screenshot showing it at 113A as it seems to be slowly rising as I'm ...
by alexbeatle
Wed Oct 23, 2024 6:11 am
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

We're in business!
2 successful trials at the Electrify America CCS Type 1 using Damien's code migrated to my Teensy VCU. Slow speed for now - 5A and 20A, but proves the concept. VCU controls the LIM using BMS limits. LIM controls 2x small 15ohm contacts, which in trigger larger kilovacs.
Still a ...
by alexbeatle
Tue Oct 22, 2024 7:44 pm
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller

tom91 wrote: Tue Oct 22, 2024 6:49 pm
This is from the DBC
image.png
What’s the difference between DC-Type1 0x4 and DC-Type1C 0x8?
by alexbeatle
Tue Oct 22, 2024 6:37 pm
Forum: Batteries and Charging
Topic: BMW i3 CCS/charge port controller
Replies: 1229
Views: 6848965

Re: BMW i3 CCS/charge port controller


Please use context both of coding and the original post. What were we trying to achieve? Hint: Type 1 DC fast charging.

What are you trying to achieve?

Yes, sorry, I'll elaborate. I attempted a DC charge at EVSE, yesterday, but was unsuccessful. Reviewing the logfile my code kept waiting in the ...
by alexbeatle
Tue Oct 22, 2024 5:45 pm
Forum: Tesla
Topic: SDU high current consumptions?
Replies: 46
Views: 14252

Re: SDU high current consumptions?

Fixed the fan controller.
Inverter temps still go high. Didn't drive much and <45mph, but was in 65C-70C.
The difference with the fan - faster temp drop when stationary. Waiting on the thermal camera to see delta, but radiator is cool to touch, while it was warm before.
Observing the temp on my ...