Search found 436 matches

by xp677
Fri Jan 22, 2021 10:13 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

Yep, the GS has a solenoid as part of the shifter assembly. For a bare transmission, you don't get that. Since I used a motor to move in/out of park, I do the lockout in software (I take the two brake pedal sensors as inputs). I'm not sure how you'd implement a lockout solenoid, to be honest, it mi...
by xp677
Tue Jan 19, 2021 1:25 am
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

TonyV wrote: Sun Jan 17, 2021 1:23 am Image was taken from the GS450H Wiki
Those are probably the 288v DC cables from the battery? I don't have access to the full schematic right now. Either way, they are not present on the control connector for the inverter.
by xp677
Sat Jan 16, 2021 11:04 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

5. explain the purpose of the following pins (HSDN, GI, ILKO, CE1, CB1 on the inverter) You mentioned some of these are not required but what do we This should be covered in the wiki? HSDN - high voltage shutdown - pull to 12v to shut down the inverter power stage, pull to ground or leave connected...
by xp677
Wed Jan 13, 2021 9:22 pm
Forum: Toyota/Lexus
Topic: The VCU change discussion
Replies: 81
Views: 11678

Re: The VCU change discussion

I don't see any issue here. The designs are open source, if you want to stay supplied with the boards you are used to then just have more of them made at a manufacturer of your choice. If you are worried about future updates then just accept the features that are already present, or update it yourse...
by xp677
Tue Jan 05, 2021 10:38 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

Yep, the GS has a solenoid as part of the shifter assembly. For a bare transmission, you don't get that. Since I used a motor to move in/out of park, I do the lockout in software (I take the two brake pedal sensors as inputs). I'm not sure how you'd implement a lockout solenoid, to be honest, it mig...
by xp677
Thu Dec 31, 2020 7:16 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

If I can figure out how to read the positions on the original selector, I can use that to then command the transmission to switch to Drive or Reverse. It's in the wiki: https://openinverter.org/wiki/File:Shift_position.png I'm also using an alternate method of selecting direction. For the park posi...
by xp677
Thu Dec 31, 2020 7:11 pm
Forum: Toyota/Lexus
Topic: GS450H Motor Connectors
Replies: 66
Views: 17076

Re: GS450H Motor Connectors

I did originally upload it. The file inverter_connections.png is still there (I can't upload a new copy due to the name being in use) but the reference has been removed, I'm not sure how to fix this.
by xp677
Thu Dec 31, 2020 7:07 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

Newbie regen question - I'm building a 307v pack and of course will be wiring straight into the bus per Damien's instructions. How is regen managed? How to adjust, if possible, the voltage going back to the pack? What about amps? My pack is designed to handle over 500 amps peak. I'm having nightmar...
by xp677
Thu Dec 31, 2020 12:31 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

by xp677
Wed Dec 30, 2020 10:17 pm
Forum: Toyota/Lexus
Topic: GS450H Motor Connectors
Replies: 66
Views: 17076

Re: GS450H Motor Connectors

You're welcome ;)
by xp677
Wed Dec 30, 2020 12:08 am
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

I think I've got a working solution but have not tested it in real life yet. The project code gets a bit more complicated since the system as a whole needs to know what gear you're in. The whole shift sequence has to go something like: RPM gets to the threshold value (with hysteresis for up/down). E...
by xp677
Fri Dec 25, 2020 8:44 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

The VCU already does this so it's $58 that you don't need to spend, but it's your money so if it makes you feel better then go for it.
by xp677
Fri Dec 25, 2020 5:34 pm
Forum: Toyota/Lexus
Topic: GS 450H - Disassembling for just one motor?
Replies: 4
Views: 1151

Re: GS 450H - Disassembling for just one motor?

ORNL tore the LS600h (identical from MG2 forwards) down for analysis. Looks like you can split the casing and use just MG2, you would have to deal with oil and coolant routing/blockoffs, and maybe a front bearing/support since this is part of the power split device on the GS. https://www.osti.gov/se...
by xp677
Thu Dec 24, 2020 9:07 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

Yep, the reason I base it on current is because my current readings are from a dedicated sensor (CAB300), the update rate of this sensor is higher, and the resolution is greater than relying on the inverter voltage readout. It's the inrush current which we are trying to limit, so as long as that is ...
by xp677
Wed Dec 23, 2020 4:10 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

So I want to make sure I understand the precharge logic in the VCU. When the inverter is precharging, the inverter will report back the dc bus voltage. As the voltage is increasing, that will get read in to the VCU. Once it has reached a threshold, it will close the main contactor. In essense, the ...
by xp677
Fri Dec 18, 2020 7:47 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU V3 STM32 Software Development
Replies: 88
Views: 10612

Re: Lexus GS450H VCU V3 STM32 Software Development

FYI, this: //checksum for setup data! htm_checksum=0; for(int i=0;i<78;i++)htm_checksum+=htm_data_setup[i]; htm_data_setup[78]=htm_checksum&0xFF; htm_data_setup[79]=htm_checksum>>8; The results are already be in the htm_data_setup array. Since that array never changes, there's no reason to calcu...
by xp677
Wed Dec 16, 2020 10:15 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

Uhh yeah I have the files for this but am away from home right now. IIRC they weren't completely correct, I needed to make a few changes to get them to fit and even then it wasn't great. I need to dig the unit out at some point and finish them. I was actually thinking of selling these parts since I ...
by xp677
Wed Dec 16, 2020 10:13 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU V3 STM32 Software Development
Replies: 88
Views: 10612

Re: Lexus GS450H VCU V3 STM32 Software Development

Does anyone have information regarding how continuous the clock signal needs to be for this interface? I know the ATMEL device puts out a continuous transfer clock and Toyota does also. From experience, you need to clock the data in and out of the inverter's MCU, but for the period in-between, you ...
by xp677
Sat Dec 12, 2020 1:27 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU V3 STM32 Software Development
Replies: 88
Views: 10612

Re: Lexus GS450H VCU V3 STM32 Software Development

The first gotcha appears to be this in the datasheet:- The CK pin is the output of the USART transmitter clock. No clock pulses are sent to the CK pin during the start bit and stop bit. The toyota protocol does get clocked during the start and stop bits, so the STM32 will stop the TX clock during t...
by xp677
Thu Dec 10, 2020 12:44 am
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU V3 STM32 Software Development
Replies: 88
Views: 10612

Re: Lexus GS450H VCU V3 STM32 Software Development

I've moved on from the SAM3X8E to the SAMD21 series on my more recent projects. The 3X8E is apparently nearing end of life. The SAMD21 is stocked at JLCPCB, it's cheaper and smaller, but doesn't have onboard CAN. Porting the VCU code over should be simple, it would just need the register settings up...
by xp677
Mon Nov 30, 2020 9:54 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

I'm also using an RX8 pedal. There is an offset on the RX8 between the two values, it's 115 ticks. My code added error checking, limp mode, etc for if one of the pedal sensors is faulty. That stuff would work on any pedal. Here's my code, you'll have to port it yourself to work with the VCU, it outp...
by xp677
Sat Nov 28, 2020 1:13 pm
Forum: Toyota/Lexus
Topic: GS450H Discussion
Replies: 377
Views: 78937

Re: GS450H Discussion

As far as I'm aware, this code has not yet been written.
by xp677
Thu Nov 12, 2020 6:59 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

It works on GWS191 only, so 2006-2011
by xp677
Wed Nov 11, 2020 8:46 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

A bit late to the discussion, but FYI you can spin the motors on 12V DC. They do stall at anything above around 100rpm, however for testing the communications, it's fine.

I ran mine from a 50A server power supply, I don't know how much current it uses. A car battery would be fine.
by xp677
Thu Oct 29, 2020 8:29 pm
Forum: Toyota/Lexus
Topic: Lexus GS450H VCU Support Thread
Replies: 775
Views: 568493

Re: Lexus GS450H VCU Support Thread

There's no benefit to sending the code over. My code predates the VCU, Damien made chances to it to suit the features of his board, and I've branched off to make it specific for my project. My current code is not compatible with the VCU. The only functional changes are already pasted above in the co...