EV Conversion using prius gen 2 inverter/transaxle

[RetroZero]

Original message didn't go through, so quick reply
Johu's Audi A2 build is the best real life example to date. See if you can use those parameters as your base. Damien was using a Gen3 in the video, so might differ.

[voti]

Is there a thread on that audi A2. Where can I get the parameters?

[johu]

viewtopic.php?t=650

https://openinverter.org/parameters/view.html?id=29

[voti]

Thank you

[voti]

Got a chance today to pass by the workshop and do a bit of testing.

I uploaded Johannes' parameters and refreshed to make sure they are loaded, then also confirmed udcsw to 0 then I pressed on the throttle and checked on spot values. On the transaxle no spinning happened and on spit values I got this results. Please see screenshot attached.

Been trying to spin the motor with the throttle before I continue but I'm failing. Please help me out. I have my throttle configured this way. Please see screenshot

[RetroZero]

Are you using CAN? Last error is relating to CAN TIME OUT.......Are you connecting wires to CAN pins?

[voti]

Connected what to CAN?

[voti]

All I have for this setup now is the ECU and the prius pedal connected to the Inverter.

[RetroZero]

If you disconnect the motor, can you get the pedal values to go from 0% to 100% when you push it?

[voti]

I'll do that tomorrow morning. This readings that I'm to confirm are for potnom ?.
And if yes. Should they change same time I press the throttle or I should press and hold then refresh to see the readings and so forth till I get to 100% ?

[RetroZero]

Yes it is Potnom. Put your Spot Values in automatic update & press the pedal slowly. Your values should change smoothly.

[voti]

I set dirmode to DefaultForward, udcsw to 0 potmode set to singleRegen and manualstart to on.then went to spot values, first refreshed to confirm Run for opmode. Then I set spot values to auto. I scrolled down to pot values and pressed my throttle. Pot and pot2 changed from pot 1070 range to 4095 and pot2 changed from 2103 range to 4095 also.
Regenpresent showed some readings from 0% to a 100% even though they were quite offset from how much I had pressed the throttle, but I did hit 100% even though it was when the throttle was not fuly pressed.
On the other hand potnom didn't show any reading through the test

When potmode is set to DualChannel only pot and pit 2 change values. Regenpresent doesn't show readings just like potnom.
For this test above I had the transaxle connected, when I removed it and put in the same parameters, the only difference that I spotted was that regenpresent just displayed 100% .

Did a couple of tests. With Johannes parameters also but still nothing. Even changed syncofs to 10120 but still nothing

[voti]

Anyone ?

[manny]

The pot and pot2 should not go up to 4095. 4095 is the max value of the ADC. At what voltage is your gas pedal connected?

please post parameters and spot values lists.

[voti]

Yes 4095 is the max value, I failed to explain that the values increase as I press the throttle up until they reach 4095 when the pedal is fully pressed.

The pedal Input voltage is 5. I used a multimeter to confirm and it showed a reading of 5.3v on both 5v input of the pedal as it take in two grounds, two 5v and 2 signals "throttle 1 and throttle 2" right?.

For parameters I did use these that Johannes sent me.
https://openinverter.org/parameters/view.html?id=29

[manny]

you need to change the pot setting according to your gas pedal.

potmin
potmax
pot2min
pot2max

[voti]

At some point I was desperate to the point were I asked chatgpt what do to and suprisengly it also said the same thing. It said I should change my potmin and potmax to match the values that appear on spot values before pressing the throttle, so I did and still potnom didn't show readings. I asked why and chatgpt said the gap between my potmin and pot2min is too big. It should be atleast 5% different for potnom to recognize. So it suggested that I change that gap percentage to 15% or 20% so that the values for potmin and pot2min and not far of from as mine were. It said I should look for some parameter name called pottol and when I did I couldn't find it. I know chatgpt is not reliable especially with such work but I was desperate for help.

Below I've attached a screenshot of the parameters I had put. Based on the ones I found on spot values

[johu]

Please note that the Audi parameters are production parameters from an actual vehicle. So some of the deraters (e.g. udcmin) might get in your way as well.
Funny AI knows about throttle setup. At least it learned something when almost taking the server down

[voti]

Please note that the Audi parameters are production parameters from an actual vehicle. So some of the deraters (e.g. udcmin) might get in your way as well.
Funny AI knows about throttle setup. At least it learned something when almost taking the server down

I did notice that some that parameters are not quite good for testing hence when testing I did use them and also didn't use them at some point stil tryna figure out what the problem is. Coming to the AI part, I was a bit surprised myself to learn that it has some sort of understanding to throttle setup but I wasn't quite sure because I myself don't know much. So my question is " was it correct when it mentioned the % being to little hence potnom not being able to recognize potnom and pot2nom because their values are far off from each other, if yes what is the name of the parameter that I should check to try balance that because my potnom starts from around 1070 while pot2nom starts at around 2103 as seen from the screenshot above.

Another question is that are the two always this different or there's something wrong with my system?
And can I confirm if throttle1 and throttle2 signals are being generated by testing with a multimeter or scope. But like i said, when pressing the throttle the potnom and pot2nom values increase from the stated values and gradually increase till they reach 4095

[MattsAwesomeStuff]

Just a short driveby commenting, but there's a procedure for setting the potnom values, and it seems like you've skipped it if you're maxing them out. Don't have time to dig up the procedure right now.

[voti]

Just a short driveby commenting, but there's a procedure for setting the potnom values, and it seems like you've skipped it if you're maxing them out. Don't have time to dig up the procedure right now.

Thank you for taking your time to comment.

[voti]

Anyone with the gen2 throttle pedal calibration please do share. The collab video of Johannes and Damien doesn't have them and also Johannes sent me the audi A2 conversion topic and it doesn't have the throttle calibration since Johannes said
(" Sounds good. I won't need a throttle pedal, A2 has electronic one already.")

Anyone please.
Thank you

[RetroZero]

Is it possible to load throttle parameters in graph form?
I don't have the figures in front of me, but vaguely remember setting throttle. From what I remember:
There are 2 potentiometers.
Pot is for 0 to 4095 (digits)
Pot2 is the reverse 4095 to 0 (digits)

Setting Pot: note value when NOT pressed (example 500) - set your min value LARGER than this (example 550).
Now press throttle completely & note value (example 4500 - set pot max to LESS than this value (example 4200).
Pot 2 is done the same, except its the reverse of values because it reads in the opposite direction 4095 to 0.
Plot your graphs.
What you are trying to create are values where when no pedal is pressed, Pot is at 0, with a slight margin of play. The same is done for potmax.

[voti]

I wasn't planning to post this comment but this is starting to scare me now.

I disassembled the transaxle so I can weld the planetary gear set inside. Cool I did that but now I'm having a tough time putting it back together. Everything lines up properly and fits back in place, my only problem is that once I put in all the bolts the none between the cv axles and the engine input shaft rotate. Everything seems stuck

I assembling and disassembled in twice but I still can't get it to rotate

[MattsAwesomeStuff]

Everything lines up properly and fits back in place, my only problem is that once I put in all the bolts the none between the cv axles and the engine input shaft rotate. Everything seems stuck

Again, verbally describing things that you might have verbally misunderstood is challenging to diagnose.

Take pictures. Maybe you welded the wrong thing?