The latest firmware release v2.22a has a weak reverse which I assume will be fixed on the next one.
Beware of throtramprpm and leave it set to 20,000 as any rpm over a lower setting allows full power uncontrolled acceleration as I found when setting it to 1000.
Seriously scary!

I also have the same issue when "Auto Refresh" is set on to display spot values.
It often requires multiple screen refreshes on Chrome to sort.

My project only seems to require the reverse torque increase to be added to the gold version although I may go back and try v2.31TH as that had all the functionality apart from the request HV input I will us with an Orion BMS controlled Chademo.
I note on another thread https://openinverter.org ...

No, just made the change and it seems OK now. That is scary though.
What is that parameter used for.
I am testing with the wheels in the air so it's not a proper test until I can go on the road.

Not sure how to save a plot and its easier to take a pic of the plot.
Pot volts is Red and Potnom is Blue. Due to the immediate increase in rpm, the vertical drop on the red trace is me taking my foot off the pedal.
You can see the spike on the Potnom trace.

I was about to start a new thread titled Uncontrolled throttle with Zombie on Leaf inverter but saw this one.

Initial testing using version 2.20 seemed OK with throttle control but lacks power in reverse which is already known and I assume will be sorted on the next update.
Since doing other ...

So you wired the BMS up/configured to only send CAN messages when in Run or Charging mode?


Yes. The Orion has an "always on" supply that takes a negligible current but wakes up immediately when its power on is connected.
I hadn't realised that the Leaf PDM was staying awake due to the BMS on ...

Should the coolant flow be reversed then too, to enter through the physically lower port and exit via the physically higher port? Or doesn’t matter?

Also, if this is the same heater as used in the audi etron this is how weirdly they mount them- one for battery heating, another for the cabin ...

I managed a simple work around that may be of interest to others.

My charge port has a door and switch so I enabled the BMS when the door is open. The Zombie ECU is happy with this and the PDM enables as soon as the BMS CAN messages start.
Simple diode logic from the ignition on rail enables the ...

Had a long think on this and cannot see how to enable the BMS when the Zombie detects a plug is inserted.
I cannot use the HV contactors as a trigger as it needs the BMS first.
I did try using the Water pump output as that came on instantly as the plug is inserted but the Zombie doesn't wait for the ...

Ok great, might be getting somewhere.
It is an Orion BMS and will be sending CAN messages as it is left running (140mA) to allow charging with ignition off as there doesn't seem to be an output from Zombie to wake up the BMS when the charge plug is sensed.

Will stop the BMS and see what happens ...

Edit:- Tab and blank spaces not allowed so messed up my table below.

CAN logs and fixed position screen pics attached.
Current measurements only taken on permanent supply wires as ign on supply to inverter and PDM have been ignored for the test.
Inverter PDM
1. Off 12v permanent on 12v always on ...

tom91 wrote: ↑Wed Apr 23, 2025 4:12 pm Post CAN logs of your setup:
1. Off 12V permanent on
2. Zombie going into drive
3. Zombie going off
4. Wait for CAN traffic to stop

and measure the 12V current draw for each.

Will do

tom91 wrote: ↑Wed Apr 23, 2025 4:12 pm When you say 560mV you mean mA?

Oops yes

So you are saying your Nissan Leaf stack still sends CAN frames after the zombie told it to sleep? What version of the leaf stack do you have and have you wired the ignition relay as required.

The current drain from the "always on" terminals of the Leaf stack has always been an issue to my ...

Just installed the V2.22a and confirmed its install version on spot values page.

LIN fix for VW heater works brilliantly but the reversing power fix that @tom91 gave me to try hasn't been implemented on this version and again the car cannot run over a matchstick in reverse.

Leaf stack still draws ...

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. It works brilliantly when installed correctly controlled by LIN comms.

Hopefully the the next Zombie update will include ...

The size code for these 2mm long parts is 0805 (2012") and will add to the Wiki description when I receive them on Monday to confirm this is correct as there are many different SMD sizes.
We seem to be at the same point on our Leaf Stack testing.

Tested the car running Fwd for a couple of seconds then reverse up a steep slope. Loads of power in reverse but fully controllable.

Just followed @J0hannes suggestion and note that I must have an older board as R50 is 1802 (18K) so guess C45 is also incorrect.

R50 should be 1K and C45 1n.

@tom91 please ignore my earlier post and I will swap the parts over.

Just testing the Fwd/Rev power and the latest trial mod is excellent with plenty of power in reverse.

On the Leaf drive unit application I feel that the Throtramp units of %/10ms should ideally be %/100ms as I have it set to 1% and still is pretty fierce with easy wheelspin in Fwd on my front wheel ...

There is a bug in the 2.20 release, so the LIN doesn't work properly. Also you may need physical modification on your Zombie board, depending on the board you have.

A resistor and a capacitor
https://openinverter.org/wiki/Zombieverter_hardware


Looks as if @tom91 has sorted the LIN issue on ...

No problem with CAN logging and want to try the update earlier posted but haven't compiled for the Zombie, only updated with the latest firmware V2.20A.
Are there any threads to follow to assist?

According to the parameters this option is in the code but has anyone tested it yet as I'm getting no-where at the moment.

Its wired as described on the VAG heater page https://openinverter.org/wiki/Volkswagen_Heater

The heater LIN comms wire is I assume connected to the LIN Zombie terminal 24 ...

As a bit of a newbie regarding compiling the github files, is there a description of the steps required on the forum as I have extensive experience with numerous PLC and other industrial software packages but very rusty using the coding on Zombie.

I could help moving issues along with the Leaf full ...

It would be good to know if others have the same, or ever had it working well in reverse.


I also am just testing my full Leaf stack and reverse barely drives over a matchstick.
Has this been rectified?
I will do more testing today but cannot see any parameters I have set that would limit power ...