Search found 20 matches

by tAB
Thu Feb 14, 2019 6:15 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Just arrived :) rusefi1.jpg rusefi2.jpg Now I need some more time... All the passives are populated on Frankenso. But I have too much projects in parallel... Building rusEFI, doing a complete bodywork on my pickup. If it would not be enough, last week I bought my house which needs to be renovated......
by tAB
Thu Feb 07, 2019 7:39 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Thank your for your checking and suggestions! The PCB is already in production so no chance to change it :) But will be fine for the first tests.

BTW, you mentioned the LSU4.9
Any experience with the cheap ones from ebay? (~30USD)
by tAB
Mon Feb 04, 2019 12:47 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

by tAB
Mon Feb 04, 2019 11:22 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

If you aligned the via's with the Frankenso board, you could simplify the connecting wires. Yes, that was my first thought also. But as I mentioned, this is a proof of concept board only. Maybe I had to switch to 4 layer that case. It's chepaer for the moment :-) (+ have more flexibility) Unfortuna...
by tAB
Mon Feb 04, 2019 7:15 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

I do not want to put in too much effort. This board is just for proofing the concept. If works, I will integrate the whole stuff in one board.
If you are still interested, I can share the files.
by tAB
Sun Feb 03, 2019 11:56 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Just finished with the proto of my adapter board.
It includes the WBO circuitry with CJ125 and the throttle motor driver.
rusEFI_Simos2P_adapter.png
rusEFI_Simos2P_adapter.png (75.48 KiB) Viewed 17536 times
(it was my first project in KiCad, just starting to figure out how it works...)
by tAB
Wed Jan 23, 2019 8:01 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

russian wrote:
Wed Jan 23, 2019 6:27 pm
Next step is getting BOM parts :)
Most of them arrived already :)
...and I'm working on my adapter board to OEM connector. I will integrate the WBO and idle motor driver circuit also on this board.
by tAB
Wed Jan 23, 2019 6:23 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Just arrived :)
IMG_20190123_181340.jpg
IMG_20190123_181340.jpg (192.11 KiB) Viewed 17647 times
IMG_20190123_181329.jpg
IMG_20190123_181329.jpg (214.34 KiB) Viewed 17647 times
by tAB
Thu Jan 17, 2019 7:50 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

I'm developing the electronic throttle body stuff on this guy: https://www.pololu.com/product/1212 A bit cheaper, and it's a chip that was designed to be an ETB controller. You're also guaranteed good support from rusEfi :) It's too late, I've already ordered some VNH5019 to develop my own module :...
by tAB
Wed Jan 16, 2019 9:39 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Just found, in the OEM ECU the idle motor is driven by TPIC0107
http://pdf.datasheetcatalog.com/datasheets/208/312259_DS.pdf
by tAB
Wed Jan 16, 2019 9:17 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

As mentioned earlier, there's a position feedback pot for the idle motor. Here we have two options: - create a small circuit which receives PWM from rusEFI, drive the motor and handle the pot signal (no position feedback to rusEFI) - drive the motor directly from rusEFI's PWM, feed back the pot sign...
by tAB
Tue Jan 15, 2019 10:52 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

The current is not known yet, but I guess it's not more than 4-5A. Will check it when I come closer to realization. Maybe an other output FET will be needed. I'm not afraid of HW side, but SW... :-)
by tAB
Tue Jan 15, 2019 10:11 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

russian wrote:
Tue Jan 15, 2019 9:50 pm
tAB wrote:
Tue Jan 15, 2019 5:28 pm
Can I use my current idle motor (DC motor)? Just use as a simple idle solenoid and drive it with PWM? Will I need the feedback pot?
I simply do not know the answer.
Noone used similar config till know? I thought this kind of idle motor is more common... Than it will be a nice challenge :-)
by tAB
Tue Jan 15, 2019 10:06 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

russian wrote:
Tue Jan 15, 2019 9:49 pm
Do not see your order, did you order a batch of boards at a fab show? How many boards and most importantly, what color? :)
Ordered 5pcs in a fab shop in simple green color.
I can share some of the boards if needed.
by tAB
Tue Jan 15, 2019 5:28 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

One question is still remains open from the initial post.

Can I use my current idle motor (DC motor)? Just use as a simple idle solenoid and drive it with PWM? Will I need the feedback pot?
by tAB
Tue Jan 15, 2019 2:53 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

kb1gtt wrote:
Tue Jan 15, 2019 10:29 am
...I think you could get this working with a Frankenso...
Meanwhile I ordered the Frankenso PCB (R0.5.3.1) and started to gather the main parts.
by tAB
Tue Jan 15, 2019 10:51 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

I once created a PCB which would takes several MAP signals... Yes, I found it already when digging around the possibilities. If russian is up for it, I think that support for multiple maps is the way to go. AKA tune each cyl individually. Think of it like 4 ECU's in one, but with one crank, and one...
by tAB
Tue Jan 15, 2019 10:09 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Thommm wrote:
Tue Jan 15, 2019 9:20 am
Usually though , Alpha-N is used with ITBs. That is based on TPS inputs
Yepp, Alpha-N is an option too, but I want to keep it as worst case scenario.
What about MAF? I'm planning an airbox for ITBs, so could fit MAF sensor later.
by tAB
Tue Jan 15, 2019 6:06 am
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Re: Skoda 120L + ITB

Yes, each TB has a dedicated vacuum port which are connected to a common MAP sensor. I get ~500-520mBar at idle.
by tAB
Mon Jan 14, 2019 11:20 pm
Forum: You and your build
Topic: Skoda 120L + ITB
Replies: 38
Views: 24722

Skoda 120L + ITB

Hello All, First of all a little introduction of me. I'm an electrical engineer, but dealing with cars in my free time as a hobby. I repair everything including engine, suspension, electronic, bodywork and also doing paint jobs as well. In parallel I'm building my old Skoda's. I have a 120L which is...