Hi, I have been pondering the same thing for my SDU setup - what have you come up with so far?

Thanks a lot for sharing all this info - super helpful as I'm about to pull the engine out of my Legacy GT (3rd Gen) to build battery boxes up front. Did you do any 3D modelling to plan the space at all? Just curious.

Hi All, I thought I would post a mini update on my build: - was overseas for a month! - Now I finally have to refurbish and sell this original Vespa I have had in my garage for the past 6 years as its taking up space where I need to put the subaru to pull the engine etc: image.png Such a smelly 2 st...

Great to see a open discussion on this as I've also been agonising over all the possible ways of architecting my own system. My current layout looks basically the same as yours, but I'm using M3 DU with an as yet undetermined VCU (a bit heretical to say it on OpenInverter even as a Damien patron, a...

Looks great! Small note. A/C and PTC heater (if you're gonna add one) are fused with 40A in the FHVJB. https://www.diyelectriccar.com/threads/hacking-the-tesla-model-s-front-junction-box.193729/ Any chance you found a reasonably priced pre-made harness for the SDU LV wiring? I see people here menti...

Hi,

I've got a rear SDU going into a subaru rear subframe and I've been trying to find a diagram etc to show what the tilt angle should be. Did you have any luck with yours?

Just a mini update: so I got my bench test of the SDU done - I powered it off my Lifepo4 48V DC home battery system as a test and made this powerfully average Youtube video here: https://www.youtube.com/watch?v=kEg9AxUq_MY Just a heads up: while "revving" the pedal its actually pretty easy...

Also, in South Africa, why not buy lithium cells from the solar suppliers? I know they are lifepo4 rather than li-ion and therefore a bit bigger, but they require way less cooling consideration, and you’d avoid all the import hassle. Hi, so the lifepo4 cells are cool and also safer but they don't h...

Very interested in seeing how you get on with this. I have a 4th gen Legacy spec B which I've had for 16years now. Would love to convert it but the ridiculous UK rules on not changing the road tax following an EV conversion mean it doesn't make sense to. Curious about your connection to the iBooste...

Since I am currently seperated from my beloved project back in my parents garage due to university far away, I just continued the thinking part of this problem. I found multiple solutions that all have their specific flaws: 1) Charger directly connected to Battery, Motor connected via (inverter con...

So I decided to make an alternative wiring diagram with the following 2 main differences to the Rev 3 above: 1) I've added a main -HV contactor (to be like an actual Tesla arrangement - must be a reason its there right? :) ) and also switching all the contactors in an OR arrangement - either from th...

Quick questions on your HV wiring. -Why is there no contactors on the HV negative? -You need precharge on the auxiliary components too Hi, thanks for the queries. On the main -HV contactor Q, I'm kind of following aber333's advice as I can't really see the benefit of having a second contactor eithe...

Wiring Diagrams: So I started with a concept diagram that looks like this to get my head around things: image.png And then over the past few weeks while swopping out the inverter control board (what a pain those SDU current sensors are!) I have been working on a main wiring diagram which at present ...

Hi All, So.. I started out on the DIY Electric Car forum but it occurred to me that it would actually be better to put my build here as it's based around the OI conversion route. I had a bit of a thread here: https://www.diyelectriccar.com/threads/subaru-legacy-tesla-sdu-conversion.208076/ But anywa...

I hate when people say "read". Yes, reading is good, but sometimes you've been staring at the problem for so long that nothing makes sense anymore and need another head to help alleviate some of the uncertainty. I had the same questions when I was first starting and had to go investigate....

Never NEVER allow inverter or other VCUs to DISCONNECT your DC contactors at its whim! You setup DC link in such a way that inverter can control contactors innitially, but when on they can be turned off ONLY by removing 12V from them (turn ignition key). That is called latching relay circuit. You p...

I use a PWM signal to pull the accelerator or brake pedal more or less to zero. With this I prevent over and under voltage of the battery, as well as blocking or spinning of the rear axle. Thanks for this - I think this is a really good idea and I recon I can do this with an available signal from t...

OK! What i did was use a bit longer cable, routed it around the alu wall and i fixed the Wifi module on the other side over the charger module. It seems i get less disturbance that way. Using Lolin Wemos D1mini i get wifi signal some 5m from the car now. Go figure. This is probably a better idea th...

I opened up the brake pedals switch out of curiosity and inside its just a sort of slider switch with 2 sides - NO/NC: Hopefully useful for others who might wonder about it too.

Hi All, I have a Tesla rear SDU and OI setup where I am aiming to control the contactors via the inverter as per the OI setup wiring diagram - I'm at the point where I have the board swopped over and am rigging up my bench test arrangement. So I am wondering how others have done this setup and speci...

I left out all the sockets, and just used the header, but didn't set it all the way down and carefully soldered in place... would this work for you? I'm using it in an inverter, so I can't tell if this would fit in the Tesla charger. https://i.imgur.com/97CL2kF.png Thanks for the response. So I tri...

Ok, so I've been silently watching and building. Well, the time has come to join in. I have a 14 Chevy Silverado 2500 that had a Duramax. Drivetrain is gone. Fuel tank is staying as I'm adding a 22kW diesel range extender. I have added a 1st gen Chevy Volt battery where the exhaust went. It roughly...

Hi All, I have a 10kW Tesla Gen 2 charger and I got my OI kit in the mail the other day and the wifi module and mini PCB that comes with it doesn't quite look like all the other red ones... it looks like this: image.png So I thought I'd make a post as I'm probably not the only one who spent a little...

Openinverter uses the dual pot in a redundant manner. I'm not 100% sure what happens if one fails (probably a safe shutdown). I've not had any issues with interference. I don't know what value pot the VX220 throttle uses. 10k is probably fine. Lower values are less susceptible to interference but I...

davefiddes wrote: ↑Wed Jan 11, 2023 4:53 pm Did you find the Service Manual OK?

No, I did a bit of hunting but then figured out what pins are what from the Ingineerix video - so I think for my conversion I will use ones that go from 0.8V > 3.8V. Hopefully that works!