tom91 wrote: ↑Thu Mar 06, 2025 10:50 am The BMS E6x and E9x have brake over CAN.

At this moment this is not a good idea due to how the CAN reading is done by the Zombie.

Why is that?

Hello community,

As a primer - Vectrix VX1 is a maxi scooter, designed some 20 years ago, the frame is basically a big battery box, motor is 22kW peak. Company went under multiple times, allegedly spending $ 250M+ to produce <2k units. Entire vehicle is CAN controlled, consists of ICM (controls ...

While my bench power supply is on its way from China, I wanted to look how the immobilizer works.

Screenshot from 2025-02-17 21-00-20.png

As soon as the inverter logic has power and VCFRONT transmits the 0×221 (VCFRONT_LVPowerState) message, it (inverter) shoots the 0×276 message to the CAN ...

Why did you move over to TIC12400QDCPRQ1? Infineon at least supported a arduino library .


Actually the Infineon part was replaced by a DRV8912, for availability reasons.

The TLE94112 driver I think you are referring to is for Arduino framework, is specific to motors, (whereas we want to use ...

No, there are chargers that require Control Pilot signal to function thus the Zombie needs to replicate it.[quote=jetpax post_id=79435


Hmm now you're confusing me! I thought that Foccci had a CP signal which can be spoofed and the charge current controlled by CAN to satisfy the limits of the AC ...

at the moment I am using this
https://www.ebay.de/itm/364842234939

and, yes it is 2 Hz PWM, according to the technical data 5V, but with that the pump does not start at all, only at 12V 2Hz PWM the pumps start running, I have no idea why
by the way, I fail to even generate a pwm on the zombie ...

Chill @tom91, I know you don't mean to, but sometimes you do come over as a little rude on this forum.

Like you, although I didn't create it, I'm contributing to an open source project with code and hardware.

Am also trying to help improve Open Inverter at the same time.

In answer to your ...

@maiks,

Can you confirm that you actually need a variable resistor to drive the fuel gauge?

Many old school fuel gauges just rely on the current through the gauge so this could possibly be simulated with a PWM open drain signal at say 2kHz?

Would be very interested to know more about your ...

@medo, would be very interested to know more about your application, as I'm just coding the PWM support in HeadlessZombie which is a fork of Zombie with more flexible I/O.

There are 12 reconfigurable outputs which can do pull up or pull down PWM, (in addition to 2 dedicated processor driven PWM ...

Indeed, well spotted grasshopper, was fixed in production release which uses TIC12400QDCPRQ1

(and also switched to the TI DRV8912 O/P driver, which is almost pin compatible with Infineon part...)

Are you planning to sell this as a product in the future?


Definitely, if there is any interest.

This is the MINI version that uses a commonly available ECU case

image.png

though it has to be drilled for antennae, and will be powder coated.

(Color preferences anyone? 8-) )

Will likely do ...

Thanks @outlandnish!

Re Micromod, turns out that the STM32F405 board linked above has 2 SPIs brought out, the second is actually on the "I2S pins", so I was able to use those (the motherboard uses one SPI for IO, the other for CAN controllers)

So actually had no need of more STM32 IO.

See ...

Thanks for your inputs on this and other forums, I released HeadlessZombie to production today.

Fingers crossed!

Now, firmware...

Thats a very good question @peakPWR that I was also struggling with.

Its one of the reasons I built HeadlessZombie the idea being to run a scripting language on the ESP32 (cf OVMS) that can respond to state changes over CAN from OI and send new state requests back to OI as needed.

That way, OI ...

Thanks @modellfan, actually I started off a bit like this using a Lilygo T-SIM7600 to port the OVMS code before I made my own hardware.

The M.2 socket (which added very little cost) had the advantage of allowing different modems in the future (ask current Smart453EQ drivers how it feels when the ...

Great, wish I could have found that before

So you're using the outdated libopencm3 as modified by @johu et al?

Any particular reason for not #ifdeffing the changes from F1?

Thanks for the tips, especially can_receive() :oops:

Are you saying that can_available_mailbox () removes the need for johus CAN mods in libopencm3?

Do you have a repo with your G4 port so I can take a look?

reRTC, I used the Wakeup timer to generate a 1Hz interrupt driven counter to emulate the ...

To support the HeadlessZombie I ported the STM32-vcu code to STM32F405.

That required porting the libopeninv code too, so in case its useful to anyone else here's a preliminaryt WIP version that builds under Platformio, using their version of libopencm3.

( I had to merge the CAN and ADC1 changes ...

Since HeadlessZombie uses an STM32F405, I've ported the latest STM32_vcu code over (#ifdef'd for F1 or F4) and built it under Platformio for easier debugging It's in a raw untested state as yet, but the Micromod STAT LED flashes
You can find the code here

I now get the 'copy document' screen, and have successfully made a copy! Thank you for getting it sorted for us.

Apps Script gives me nostalgia. I wrote a bunch of it for work years ago to generate documents and such. We'll be moving away from Google Workspace within months, so it will all go ...

So, putting in my known values the acceleration profile seems pretty close to what I had previously calculated and proven through testing (though I did use peak cell voltage and under load there is some sag). The range estimate seems low by about 20% though. Is that range estimated while ...

OK, so I think I've finally got it sorted.

I wanted to allow copies, but not let anyone change my original.
Turns out there is an advanced sharing option that allows people with view only access to make a copy, which is off by default...

@maboyce, when you click the link do you get this?

Thanks @muehlpower, I updated the link, let me know if that works for you