Search found 694 matches

by muehlpower
Fri Jul 04, 2025 8:36 am
Forum: General
Topic: Fooling the original ECM that the engine is running
Replies: 6
Views: 352

Re: Fooling the original ECM that the engine is running

Another approach is to find out what the diesel engine sensors are doing. From a crankshaft or camshaft sensor you can expect a clock pulse, perhaps with two missing teeth, the temperature sensor is probably analog and can also be simulated. It should be possible to check whether everything is as ...
by muehlpower
Fri Jul 04, 2025 6:49 am
Forum: General
Topic: Fooling the original ECM that the engine is running
Replies: 6
Views: 352

Re: Fooling the original ECM that the engine is running

How does Damien do it with his V50 with M3 Drive Unit?
by muehlpower
Mon Jun 30, 2025 2:16 pm
Forum: Classifieds
Topic: BMW i3 LIM voltage measuring board
Replies: 28
Views: 12720

Re: BMW i3 LIM voltage measuring board

nmeijer wrote: Mon Jun 30, 2025 10:41 am Hey Muehlpower, Can I buy one voltage measuring board of you?
yes, sure
by muehlpower
Sun Jun 29, 2025 9:37 pm
Forum: Getting Started
Topic: e-Golf battery upgrade: How does an EV know the size of battery it has installed?
Replies: 8
Views: 11373

Re: e-Golf battery upgrade: How does an EV know the size of battery it has installed?

I would like to revive this tread. I have found a supplier on the internet who sells an upgrade kit for the e-golf to 180Ah. This gives 58kWh and should be enough for 320km in real life. The price is quoted at 5800$. I don't know if this is serious. They seem to have concentrated on the I3 so far ...
by muehlpower
Tue Jun 17, 2025 3:15 pm
Forum: General
Topic: DC Power Supply for Bench Testing Tesla SDU
Replies: 1
Views: 284

Re: DC Power Supply for Bench Testing Tesla SDU

I recommend connecting 4 car batteries in series. Charge them individually, in parallel or in series beforehand. This way you have no problem with the current and can also test the recuperation. Running a charger in parallel during the test was not a good idea for me, as it was destroyed during ...
by muehlpower
Sun Jun 08, 2025 10:29 am
Forum: Projects
Topic: [WIP] StreetScooter Repair and Reverse Engineering
Replies: 15
Views: 2464

Re: StreetScooter Repair and Reverse Engineering

This description states that the “33” only describes the destination market. The entire type designation is also explained there.
NXP.png
by muehlpower
Sun Jun 08, 2025 8:24 am
Forum: Projects
Topic: [WIP] StreetScooter Repair and Reverse Engineering
Replies: 15
Views: 2464

Re: StreetScooter Repair and Reverse Engineering

my googling has led me to this link.https://tr.aliexpress.com/item/1005008459058700.html. The MC33771ata is sold there, the photo shows a MC35771ata. Further googling shows that it is a BMS chip from NXP. The datasheet at mouser https://www.mouser.de/datasheet/2/302/MC33771B_SDS-1517286.pdf. I think ...
by muehlpower
Sat Jun 07, 2025 8:09 pm
Forum: Classifieds
Topic: BMW i3 LIM voltage measuring board
Replies: 28
Views: 12720

Re: BMW i3 LIM voltage measuring board

I still have two.
by muehlpower
Sat Jun 07, 2025 8:17 am
Forum: Tesla
Topic: New Tesla LDU fault - inconsistent failure to start
Replies: 25
Views: 3928

Re: New Tesla LDU fault - inconsistent failure to start

for my understanding, what triggers an “overcurrent” message. Of the 7 inputs on IC10, 6 come from the error lines of the gate driver. One comes from IC8, and is also transmitted to the CPU. The output of IC10 suppresses the PWM. Is this suppression also output as an “overcurrent” message? If not ...
by muehlpower
Fri Jun 06, 2025 9:36 am
Forum: Projects
Topic: [WIP] StreetScooter Repair and Reverse Engineering
Replies: 15
Views: 2464

Re: StreetScooter Repair and Reverse Engineering

I have dismantled an older one and used the technology for a show vehicle. Many of the CAN messages are the same. It no longer looks like a Street Scooter. ;)
20230828_165908.jpg
by muehlpower
Fri Jun 06, 2025 8:55 am
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: 11KW StreetScooter charger group hack
Replies: 61
Views: 29869

Re: 11KW StreetScooter charger group hack

LRBen wrote: Mon Oct 28, 2024 9:51 pm Only thing left to crack is the CRC required
Do you mean the CRC in BO_ 536?
by muehlpower
Mon Jun 02, 2025 4:53 pm
Forum: General
Topic: EV Lemons Racing at Thunderhill Livestream
Replies: 12
Views: 1346

Re: EV Lemons Racing at Thunderhill Livestream

Why did you need 32 minutes in lap 370, it seems to take about 10 minutes normally to change the battery?
by muehlpower
Fri May 30, 2025 6:15 pm
Forum: Projects
Topic: [DRIVING] 1940 Chevrolet with Tesla Motor
Replies: 215
Views: 132686

Re: [DRIVING] 1940 Chevrolet with Tesla Motor

P.S.Mangelsdorf wrote: Tue May 06, 2025 12:11 pm I'd probably go with a de Dion style axle
I like DeDion, I have also installed it, together with air springs and a triangulated four link.
viewtopic.php?p=15994#p15994
by muehlpower
Mon May 12, 2025 8:11 pm
Forum: Projects
Topic: [DRIVING] 1940 Chevrolet with Tesla Motor
Replies: 215
Views: 132686

Re: [DRIVING] 1940 Chevrolet with Tesla Motor

P.S.Mangelsdorf wrote: Sun May 11, 2025 4:29 pm 2.64sec 0-60mph.
I really need your parameters :evil:
How heavy is your car?
by muehlpower
Sat May 10, 2025 5:54 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

I have installed the new software and adapted my programming. It works well. My system is activated with a button (white light). If nothing is plugged in within 30 seconds, it is deactivated again. After plugging it in, it locks, regardless of the PWM (orange light). If a suitable AC PWM is present ...
by muehlpower
Wed May 07, 2025 4:41 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

I didn't try any decimal numbers, but you're right. Now it works and I get 320V.
by muehlpower
Wed May 07, 2025 2:30 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

With my AC charging implementation, locking works as long as the two treshholds are the same or with feedback if the mechanism is not blocked. A mechanical opening remains unnoticed. With AcObcState I have not found a value that unlocks again. I could help myself if I use the new ActuatorTest for ...
by muehlpower
Wed May 07, 2025 2:26 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

I have now made tests with the version 0.44.100.B. The offset parameter works well. The UdcDevider is too coarse. After setting the offset to 561, I applied 318V, resulting in AdcInletVoltage of 1425. With UdcDevider = 3 I get 288V and 432V with UdcDevider = 2. My suggestion is dig/100V ...
by muehlpower
Mon May 05, 2025 9:44 am
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread


How to kill the lock motor?


This is consistent with my observations. The immediate jump back to “open” also irritated me.

A few more ideas on inlet voltage and contactor: If a separate measuring device is selected for inlet voltage, this should not replace the voltage transmitted by the DC ...
by muehlpower
Sat May 03, 2025 9:06 am
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

At the end of the charging process, my charge controller and Foccci are also switched off. My current requirement is 600mA in the waiting phase. This is low enough for 3 days on my 12V battery. I will set up a timout that stops everything if no charging has started for 24 hours. I will set the timer ...
by muehlpower
Fri May 02, 2025 11:33 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

This is how I imagine charging with the OBC: The cable is plugged in. Foccci and my charging controller wake up. Foccci reports cable plugged in, my controller sends lock and waits for a valid PWM. When PMW starts further controllers for cooling etc. and the high voltage is switched on with Pre ...
by muehlpower
Fri May 02, 2025 9:58 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

Why not? Locking only needs power when locking, after that it doesn't matter. If I don't want it, I don't need to send AcObcState= Lock
by muehlpower
Fri May 02, 2025 9:52 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

I have just tried it on my OEM car. It locks even with a naked cable only with a resistance from PP to PE.
by muehlpower
Fri May 02, 2025 9:42 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread


what is the version of your firmware on the Foccci?


0.44.95.B

It appears that enable must be sent and a 10% -90% PWM must be applied to the CP for the lock to change to closed. How does this work with a wallbox that is not sending PWM? I think this is the case when a wallbox is controlled by ...
by muehlpower
Fri May 02, 2025 7:46 pm
Forum: Batteries and Charging
Topic: QCA7000 Foccci+Clara User thread
Replies: 229
Views: 115930

Re: QCA7000 Foccci+Clara User thread

Now I have the next problem. I have now set LockRunTime to 700 and the treshhold both to zero. I plug in an AC EVSE. My VCU sends AcObcState = lock. Foccci recognizes everything correctly, PortState is ready, Lock remains open, but my VCU waits for Closed!