Recently got asked by a family friend: Do electric cars even need gears?

I thought this was an great opportunity to stick my head out of Stephens Porsche, and record my answer to the question as a video:

The question is excellent, because many people think you can just skip the transmission ...

You know what, I stand by what I said. Sure, you combined the ZombieVerter output with the OVMS app and added your own module code. But the result is still your telemetry app, that doesn’t need to fear Tesla’s!

When I layer onions, minced meat, and pasta sheets for baking, I call it my lasagna ...

• changed wording on a few ambiguous questions
• crossed out wrong answers
• added hint at the bottom with a bit of an explanation for every question
• added a 0/10 slide explaining what will happen in the demo

Captura desde 2025-01-04 16-20-00-min.png Captura desde 2025-01-04 16-19-12-min.png
Captura desde 2025-01-04 16-18-20-min.png Screenshot 2025-01-04 at 16-25-20 Learn electric car tech with this AI app2-min.png

You can take the first quiz here: foxev.io/academy .

The goal is to help you learn ...

Maybe in the UK we should attend one of the fully charged events again? There is also The Battery Show.

PXL_20241226_123339640.jpg

I had the pleasure of taking a close look at Jamies BMW over Christmas.

Excellent build, highlights from the short visit:

own telemetry app to OEM standard
swift pull-away from a stop
electrical power-steering without any noise
Is Jamie the first person in the ...

Good timing, we were about to test the mini board with our little motor on the desk for the EV kit.

Saved me a headache, surprised this didn't show up on previous mainboard iterations, or did you re-work the power supply for mini?

Mein Beileid!

muehlpower hier im Forum ist bei dir um die Ecke und hat da vielleicht Interesse.

Hi Tom,

welcome to the forum. I am happy to take a look, why don't you send me an email to hello@foxev.io and we take it from there?

Best,
Janosch

It's a good question, yes a "DC rail" is a High Voltage bus.

The inverter doesn't have to be "at one end", it is a consumer, like heater or DC-DC, their position in the circuit diagram there are interchangeable. It looks like the inverter was shown on the very right to clear the diagram up.

It ...

Can I simply add these two modules to my existing pack and rewire the BMS to accommodate the original 96 cells?


How exciting, can you please watch the video I made here and tell me if that's helpful:

https://openinverter.org/forum/viewtopic.php?t=5479


For balancing in I would think ...

I believe the concept is that during charging some current is bypassed around a high cell, but not sure.


This is great that's coming up. Thats exactly what I thought about BMS for a while. It took me ages to understand how simple they really are!

Thanks everyone, next videos are already in the ...

Hello,

second of these, I explain battery balancing for you with a few animations, and go into some edge cases too.


By the end of it you should have a grasp of:

Why bother with battery balancing?
What is battery balancing?
What happens if you have a weak cell in your battery pack?
What is ...

The Clipper Cabs I converted from 2018 to 2023 made it into The Guardian this morning. Once again highlighting the lower carbon emissions of retrofits, the regulatory hurdles & red tape that are still in the way of it.

Great to see them still catching eyeballs. The project going and my former Co ...

In an old video Damien posted when he initially got the Gen 3 charger working, he soldered in a CAN termination resistor onto module 3 inside the charger. Is that still accurate with the V3 control board? I see on the board two locations to solder for external CAN. I don't want to assume, here ...

A high level overview of a Lithium Ion Battery Management System in a five minute video.

If you are here on openinverter you already know what this is all about:
Not using a BMS puts capital and lives at risk. Using one, allows you to tame the power in Lithium batteries and drive electric cars fast ...

1. should not the whole project be covered with unit tests.


In my VCU firmware stm32-taxi I followed a rigorous testing approach (Zombie wasn't ready yet when I started).
You will be able to see the code for that within this year I think. Some of that may be helpful for ZombieVerter.
I believe ...

Without a range check that is considered valid at least on one channel.


I need to release my VCU code, as I have done this there, so people would get another example on how it can work.
I also check as many inputs as I can with 12V only before ever connecting a HV source.

I stumbled over the ...

Tesla Gen2 charger ... disable circuit


I listened in to CP & PP with a little circuit and when finding a resistance there the system knew an EVSE was plugged in and vehicle mustn't drive away. That worked for me. However, it might be even easier to use the pins that Damien left there for us ...

I liked having them around, so you could download them back down and check sha1 to see what the image was that was actually running when you had an issue.

Thats great! I completely forgot about this

Hello,

Not sure if someone has done these, so sharing this here.

I expected an H-Bridge and wanted to harvest the IGBTs, but found a MOSFET array instead.
I opened it up and found the following:

1 x TMS320F2811PBKA microcontroller
24 x IRFB3077PbF 8 x per phase
17 x 370uF capacitor bank on ...

Hello,

I made a board that helps you understand all the important concepts of a modern electric car - on a single board.

You might be overwhelmed by all the things that there are to learn, just as I was when I started out. Hopefully this can help you.

See the video for details:

https://www ...

Booked travel today, will be in Augsburg 18th - 21st

That order got cancelled somehow, so last week I remembered to re-order.

Do we really not have a German word for 'crimp'?

Had a quick browse, will read the electronic section in detail.