Lexus GS450H VCU Support Thread

[xp677]

May be an issue with the signing of the variable you're sending vs what the inverter expects.

Might be worth looking through the logs from my original communication thread and see what the GS put in there.

[arturk]

May be an issue with the signing of the variable you're sending vs what the inverter expects.

Might be worth looking through the logs from my original communication thread and see what the GS put in there.

I did try negative and positive values between 0 and +/- 27500 and honestly I did not see any difference.
I will try to look through the logs, this is good suggestion.

[xp677]

What I mean is, it might be to do with how the GS inverter expects to receive negative numbers vs how sending a signed integer works in C.

Probably not though, since RPM also goes negative and that comes out just fine.

Just a thought!

[xp677]

This was discussed a page or two ago. Nobody has tried it, hardware should work, software probably won't.

The current VCU hardware would be a good place to start if you wanted to develop new code for this inverter.

[TFirenza]

I'm in need of a bit of clarification being new to arduino, I'm installing the latest gs450h software _v7 from Damien though Arduino. I have installed the libraries listed and Arduino Due board drivers (image attached) but when I compile its missing /twi.h am I missing this? (Atmel CMSIS driver) https://github.com/arduino/ArduinoModule-CMSIS-Atmel



EDIT

I think I'm there now, added the esp8266 board with board manager https://arduino.esp8266.com/stable/pack ... index.json
set the board arduino due native USB and port to COM1

[Bassmobile]

Hi I'm new to the forum and I'm currently in posession of a transmission and inverter from a Lexus LS600HL.
I'm thinking of purchasing a gs450h VCU for my conversion.
Has anyone tried the VCU With the LS600HL inverter yet?

This is off-topic for this thread.
Please start a new thread to discuss this topic.

[steveknox]

Hi,
Apologies if this has been asked before but I'm having trouble getting my oil pump to work.

I've got my motor spinning with an rx-8 pedal, using VCU version 7, but the oil pump does not come to life when I apply the 12v.

The pump controller is receiving 12v (big blue wire) and the pwm (black wire), but the pump doesn't do anything. No noise or any indication that it is powering up. Has anyone else seen this?

The only thing I can think of is that the controller needs a connection to ground, but I dont know where the ground needs to be connected. Have I missed something obvious?

If i've missed any vital info, just let me know.

[Jack Bauer]

Of course it needs a ground:) connect to the case of the pump controller.

[steveknox]

Well I feel like a dummy. That worked a treat. Thanks!

[daxwert]

Hello, I'm Looking to build a GS450H based EV using your VCU board.

I've found a 4th Generation 2012-2018 GS450H (Second Generation 450H) quite cheap, does the VCU board work with the later generation GS450H?

Has anybody tried to use the later generation as a base for EV conversion yet?

Thanks
Dan

Hi, did anyone manage with this? I have the same complete drivetrain and I already bought the control board and soldered it. I now see that the pin layout on plug on the inverter is slightly different. it does look the same as the one on the IS300h. So I would love to see if I can get this unit running before trying the to an inverter from pre 2012. Am in southern africa so those cars are extremely rare.

[Jack Bauer]

The pinout might be different but the signals are probably the same. Just a question of matching them up.

[daxwert]

The pinout might be different but the signals are probably the same. Just a question of matching them up.

Thank you for the quick response. Any idea where I can start to figure out the matching?

[Isaac96]

If you can find wiring diagrams for the car that would be a start. IIRC Damien got some help from those at the beginning.

-Isaac

[xp677]

Lexustech.eu has all the diagrams for Lexus vehicles. Purchase a 1 hour subscription and just save each page or print to pdf.

[adamover]

Afternoon all...
Kit all soldered, USB connected, Arduino software downloaded and installed, and, board talking to 'Mac' OK.
When I go to upload, or even verify Wifi or Software ino get the Error Message:

Arduino: 1.8.13 (Mac OS X), Board: "Arduino Due (Native USB Port)"

gs450h_v2:12:19: fatal error: Metro.h: No such file or directory
#include <Metro.h>
^
compilation terminated.
exit status 1
Metro.h: No such file or directory

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
_________________

Metro.h: no such file or directory

Any help?
Many thanks in advance

[arturk]

Looks like you need "Metro" library installed under "/libraries" folder of your Arduino environment.
Here is where you can download it from:
https://github.com/thomasfredericks/Met ... ino-Wiring

You may be missing other libraries too (CAN, ISA, ...), please check.

There are links to most of them in the code:

Code: Select all

#include <due_can.h>  //https://github.com/collin80/due_can
#include <due_wire.h> //https://github.com/collin80/due_wire
#include <DueTimer.h>  //https://github.com/collin80/DueTimer
#include <Wire_EEPROM.h> //https://github.com/collin80/Wire_EEPROM

For ISA search dedicated thread for more info.

[adamover]

thank you I will give it a go

[adamover]

Thank you, finally found time to give this a go... still no joy 'scratches head'
Wondering if part of the problem is the connection as well, as in, selecting the correct Arduino board... or ARM chipset.
Any help/advice very much appreciated

[TFirenza]

as arturk mentioned, check libraries are all installed, board is installed and set to usb.

Not sure if needed but but also installed the esp8266 board with the board manager,
add the following under preferences 'additional board manager urls'. It should then appear in the board manager list
https://arduino.esp8266.com/stable/pack ... index.json

GL

[adamover]

Thank you appreciate your help

[itsamna]

Lexustech.eu has all the diagrams for Lexus vehicles. Purchase a 1 hour subscription and just save each page or print to pdf.

Correct URL
https://www.lexus-tech.eu/

[xp677]

Thanks for registering just to correct me. I didn't post that as a URL though, the correct URL comes up with a Google search.

Welcome to the forums.

[sfk]

Well, after searching for 2 years, I now have a GS450h! And the good news is it's road legal and driving fine (though I think 1 or more cells in the battery pack could be a bit weak).

So this means I have the opportunity to collect CANBUS data and any other telemetry that would be useful to the development group as it'll be my daily commuter for the next month or so. If there is any specific data you are interested in please instruct me. I'll be going through past threads regarding canbus sniffing to get a suitable setup but chime in to recommend something please.

I plan on resurrecting my build thread at last. Exciting times.

[celeron55]

If there is any specific data you are interested in please instruct me.

I recall some discussion about problems with regen. Maybe make sure to record some of that.

[johnspark]

Congratulations sfk!