Quick question, does the normal bootloader work on the zombie ecu? Or does it need some changes for this cpu?

I just couldn't wait any longer and had to test Dilbert's regen implementation from one of the earlier posts. Success! I was able to get over 50 amps of regen in during braking with small amount of negative torque. I had to adopt code slightly for my VCU v.2 Arduino code because I do not have VCU v...

Have the Yaris converter hooked up ready to test later in the week. I didn't have the correct connectors so made do with lots of 2 way JST connectors.

Here's the Pinouts for the GEN3 Toyota Inverters, we will probably move these over onto the wiki when there is some time.

If the whole connector is Sumitono, the only crimp that seems close to the right pitch for the signal wires is the type 1.0II or 1.0III, which are 1.8mm wide...

The larger repair wire (82998-12440), is listed here:- https://www.ih8mud.com/tech/pdf/WireHarnessRepairManual/repairwi.pdf Looks like this is the larger crimp terminal https://www.bmotorsports.com/shop/product_info.php/manufacturers_id/3/products_id/1762 Sumitomo TS 2.3II Female Terminal It says th...

Perfect, thanks for posting! So the repair wire is one of the main 12V/Ground connections to the inverter. I'll see if i can identify a crimps for the smaller signal wires, i would guess the same crimp would be used for the resolver connector. I have measured the pitch of the connectors and they see...

In theory it is possible if the correct firmware is on the unit. Your main problem will be running the serial bus fast enough to take the 500kbps CAN data. If you have an arduino due you can connect up a can transceiver and run the savycan firmware. You can also do the same on an esp32 wifi module. ...

Ok so that means the rack is coded to the vehicle, so there'll be no coding issues. Yep capture some can data from the power train can bus, you should see the existing ecu sending 0rpm for the tach. You'll probably need to unplug the existing ecu so you can try send that message yourself. Once they ...

If you could connect something like savyCAN to the the PT CAN bus, i'm not sure if that's on the diag connector so would be best to Tap it at the main engine ECU, you could load a DBC file to decode the data.

https://github.com/dzid26/opendbc-BMW-E ... 9x_e8x.dbc

Just so i'm understanding correctly; the rack is currently connected to the correct CAN bus (PT-CAN?) in the E90 and once the speed goes > 5mph it will become active? That sounds like progress. That is probably a safety mode, so if the engine was to cut-out you wouldn't be without power steering. Wa...

It will definitely spin a gen 2 transaxle then

The sounds good. I'd imagine even the flywheel would do the job. It would give us a good idea of what rpm the system can regen down to. I was considering if even a flywheel could be added to the input shaft on the gearbox, to do something similar. I'm still in the process of sourcibg a gen 3 inverte...

It's electric, I could use it as is. More info here: https://openinverter.org/wiki/Touran_Conversion Ok, Does it have an ECU? I'm trying to figure out how to initiate my BMW e90's steering rack, it's electric. It tends to come alive while driving, however it's not active when I turn on the ignition...

You need to start looking up the parts catalogs online, to see what transmission is in your current vehicle and if that is also fitted to other models such as the auris. You could then look up things like drive shafts, wheel hubs etc... Off the top of my head, I would imagine the corolla from 2007 w...

I wasn't happy with my code above for regen, as it didn't give the brake priority over the throttle, so maybe something like this:- int16_t CalcTorque( int16_t throttle, int16_t brake, int16_t motor_speed, int16_t dir_selected){ int16_t torque; if(brake > 0){ if(motor_speed > 40){ //moving forward t...

I would consider just renaming the GS450 files / class as something more generic like Toyota or Hybrid etc.. Here's the enum: enum{ STATE_GS450H_SEND_REQ, STATE_GS450H_SEND_HTM, STATE_GS450H_DELAY, STATE_GS450H_READ_MTH, STATE_GS450H_EXCHANGE_DATA, STATE_PRIUS_SEND_REQ, STATE_PRIUS_SEND_HTM, STATE_P...

Yep one starts @ state 0 (lexus) and prius/auris/yaris starts @ state 5. If we want to support the rav4 Tripple inverter we could start @ state 10 etc...

I had a look at the FOC firmware today, there is some nice code in there that could possibly be re-used for this application to keep things similar enough. Although i want to try out the simple logic above before trying to do anythign more complex. Also i'm thinking long term the likes of the direct...

Get the leaf inverter, it's controlled over CAN and I believe the Lexus VCU and leaf VCU are very similar, so leaf software might run on the Lexus one. The new vcu will definitely do both.

Here are the MG2 speed and torque for a drive cycle, this should give us a starting point for the torque during the various stages of regen etc..

Off the throttle seems to be about -100, then when the brake is applied it applies a variable torque proportional to the braking force required. I have the MG2 speed also from the HTM frame on the same graph, so if we want to mimic how a toyota hybrid drives that should be no problem. I'll post up t...

OK I captured a good bit more data from the Auris today while it was driving. The data capture and processing worked fine. I've added a feature to the python script so I can downsample the data to speed up processing and graphing. The graph below shows MG2 torque during a drive cycle and the re-gen ...

I've assumed that a positive torque value results in a positive motor speed value and vice-versa. Also the values of 200 and 2000 are guestimates, the Auris is about 200 to creep forward on level ground. It would be nice to make some variables for the values, so the different re-gen levels could be ...

Might something like this get us some regen braking:- s32fp utils::CalcRegen( int16_t throttle, int16_t motor_speed, int16_t brake){ int16_t torque; if(throttle > 0){ //let the throttle set the torque directly torque = throttle; // add in the map function } else{ //no throttle applied so see if we n...