Search found 3758 matches

by kb1gtt
Mon Jun 01, 2020 12:42 am
Forum: You and your build
Topic: vw 1.8t 20vt papillon electronique #60
Replies: 26
Views: 17338

Re: vw 1.8t 20vt papillon electronique #60

Sweet, and cool to see. That's some good progress.
by kb1gtt
Fri May 29, 2020 9:07 pm
Forum: Dev: Hardware
Topic: stm32f429i-disc1 won't connect
Replies: 13
Views: 8809

Re: stm32f429 won't connect

Wasn't the pin out shifted by like 1 pin? I recall that was a common concern. If you try it I would say verify the pin out is actually the same. There may be like 1 pin that is not nice. Or that might have been a different chip, I don't fully recall.
by kb1gtt
Fri May 29, 2020 12:30 pm
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

Why would AutoDesk know anything about electrical? Do they offer any electrical PCB design software? I know about the fairly recent routing options for Inventor. AutoDesk has been primarily Architecture and mechanical. How do these contradict? #2 – Never slice up your ground layer #3 – Always provid...
by kb1gtt
Fri May 29, 2020 9:21 am
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

I recall the calculated lift of the GND plane for like a 10A current was around 0.001V. That amount of lift of the GND pin is negligible from the ADC stand point. It would be interesting to measure the lift and check it against the real world. That book seems quite old, it was written long before we...
by kb1gtt
Thu May 28, 2020 9:38 pm
Forum: You and your build
Topic: Proteus v12 club
Replies: 170
Views: 116477

Re: Proteus v12 club

It would be great if you document the process. Once you get it running, it would be great if you could make a video, or a list of key steps and key commands, with key things along the way. Like Pi4 with Linux distro xyz, then cmd make, make install, etc.
by kb1gtt
Thu May 28, 2020 9:35 pm
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

Please define advanced ground routing. I think you are saying adding barriers in your ground plane to create barriers for analog and digital. Or power and signal, etc. Per the Maxim article noted below, it is highly recommended to avoid ground plan barriers. It is very rare that you need to split th...
by kb1gtt
Thu May 28, 2020 12:41 am
Forum: You and your build
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 240
Views: 398753

Re: red 2003 VVT test mule Miata NB2 #27

We have the outputs, and if it's hardwired, then we can not change it easily. If it's a problem for some unexpected reason, we can change it in software.

Why the concern about driving it with an extra output?
by kb1gtt
Thu May 28, 2020 12:36 am
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

the Achilles' heel of the FQD12N20LTM is the 200V of breakdown voltage, we don't now if 200V peak at the primary could be sufficient for a good spark, we are using a cb600f engine and original ignition coil. I do a lazy ballpark approximation like this. 0.001 inch gap ~= 1,000V, so 0.035 gap is apr...
by kb1gtt
Wed May 27, 2020 11:49 am
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

I think that MAXFem could be used to generate the heat generated profile, then perhaps it could also be used to show how the heat moves around on the PCB. Perhaps CAELinux could do it. Both potential solutions are to big for me to take on these days. But perhaps you have some more time than I have. ...
by kb1gtt
Wed May 27, 2020 11:47 am
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

Does your school have FEA software? It would be cool to run simulations on electrical components, and example circuits. I currently want to know more about how thermal relief on via's work, and when they should be used.
by kb1gtt
Wed May 27, 2020 11:44 am
Forum: Dev: Hardware
Topic: Proteus - Waterproof, High-feature ECU!
Replies: 338
Views: 573539

Re: Proteus - Waterproof, High-feature ECU!

Puff, Are you offering soldering things by hand for free?
by kb1gtt
Tue May 26, 2020 11:21 pm
Forum: You and your build
Topic: one cylinder hf predator engine 212cc #54
Replies: 17
Views: 27032

Re: one cylinder hf predator engine 212cc #54

Hand crafted chip. Cool to see how it still works.
by kb1gtt
Tue May 26, 2020 9:53 pm
Forum: You and your build
Topic: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]
Replies: 68
Views: 89728

Re: Sporttrike

WO2 is not required for operation. That's mostly useful for auto-tuning.
by kb1gtt
Tue May 26, 2020 9:48 pm
Forum: Dev: Hardware
Topic: TLE8888 Ground path.
Replies: 23
Views: 14333

Re: TLE8888 Ground path.

See Maxim article and other resources found here https://rusefi.com/wiki/index.php?title=Manual:Hardware:PCB_design_rules
by kb1gtt
Sun May 24, 2020 10:27 pm
Forum: You and your build
Topic: 2006 Volkswagen Passat 2.0 Turbo GDI test mule #64
Replies: 181
Views: 500588

Re: 2006 Volkswagen Passat 2.0 Turbo GDI test mule

These scope traces were captured on the same but different engine. It was N31 Cyl2, the green with black wire. Current clamp was a Rigol RP1002C on a Rigol DS1054
by kb1gtt
Sun May 24, 2020 4:48 pm
Forum: Dev: Hardware
Topic: Proteus - Waterproof, High-feature ECU!
Replies: 338
Views: 573539

Re: Proteus - Waterproof, High-feature ECU!

I suspect that Matt was looking to get some external validation on the existing batch of boards. I suspect that waiting a week or something like that would either validate that the design is good and solid, or it might find some kind of issue that can be resolved on the next batch. I believe the exi...
by kb1gtt
Sun May 24, 2020 4:41 pm
Forum: You and your build
Topic: Hello from Colorado USA
Replies: 6
Views: 5136

Re: Hello from Colorado USA

I see Colorado and nice shop pictures. By chance are you this fellow? https://youtu.be/bRetFl274IE What do you have in mind for trans controller? A key issue we have is that trans controllers vary allot. We have talked about them before, but we have made little progress. The key issue is that the so...
by kb1gtt
Fri May 22, 2020 10:52 pm
Forum: Dev: Hardware
Topic: Ford 60 pin EEC-IV connector breakout board
Replies: 52
Views: 46335

Re: Ford 60 pin EEC-IV connector breakout board

I've got a couple other project in font of me right now. Once I clear them I"m likely to make progress on the 60 pin.
by kb1gtt
Fri May 22, 2020 10:51 pm
Forum: You and your build
Topic: rusEFI Frankenso
Replies: 3
Views: 3310

Re: rusEFI Frankenso

Sounds like quite a project. I fear it's not as easy as you might think. You likely have lots of wiring trouble shooting ahead of you. If you replace the harness, can you get it running on an OEM ECU first? That would resolve many concerns and make sure you have things working properly. Once it's wo...
by kb1gtt
Thu May 21, 2020 4:47 pm
Forum: Dev: Hardware
Topic: Ford 60 pin EEC-IV connector breakout board
Replies: 52
Views: 46335

Re: Ford 60 pin EEC-IV connector breakout board

I think this is the board that Andrey has been poking me about. Are you looking for just a board so you can solder wires to the ECU side of the connector?
by kb1gtt
Wed May 20, 2020 5:49 pm
Forum: You and your build
Topic: Supported android apps
Replies: 2
Views: 2857

Re: Supported android apps

I think the short answer should be, they have been done before, but we have not heard from users lately, so it might now be working any more.
by kb1gtt
Mon May 18, 2020 3:40 pm
Forum: You and your build
Topic: Bulgarian miata with FE3 #61
Replies: 14
Views: 16149

Re: Bulgarian miata with FE3

Do you have some kind of insulation under the PCB? That looks like it's really close to a short if it touches the back plate.
by kb1gtt
Wed May 13, 2020 7:51 pm
Forum: You and your build
Topic: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]
Replies: 68
Views: 89728

Re: Sporttrike

Great.

So as a recap, the real world CAM VR is wired to MRE CRANK input. Then real world Crank VR is wired to MAX992# board. Then this board is wired to MRE CAM. Then you do happy dance, and unleash the beast contained inside your metal cage.
by kb1gtt
Wed May 13, 2020 4:09 pm
Forum: You and your build
Topic: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]
Replies: 68
Views: 89728

Re: Sporttrike

Those boards use a MAX992# chip. The MAX chip has several "modes" in which it can be configured. Those boards are designed with a mode that includes a self tuning feature. Basically if you don't get a pulse in 85mS, it jacks an internal gain way up and causes noise issues. If it gets a pul...
by kb1gtt
Wed May 13, 2020 10:48 am
Forum: Universal Boards
Topic: Old Russian motorcycle fuel injection
Replies: 57
Views: 73662

Re: Old Russian motorcycle fuel injection

The igniter will see around 400v to 600v on the coils primary side.
by kb1gtt
Wed May 13, 2020 1:23 am
Forum: You and your build
Topic: Sporttrike 1.8l Toyota 1ZZ-FE [microRusEFI]
Replies: 68
Views: 89728

Re: Sporttrike

About VR to hall, we have this board,
https://rusefi.com/forum/viewtopic.php?f=4&t=994

This might also be an option.
http://jbperf.com/dual_VR/v2_1.html

At cranking RPM's what is the length of time between the CAM pulses? Is that length of time above 85mS?
by kb1gtt
Wed May 13, 2020 1:14 am
Forum: Universal Boards
Topic: Old Russian motorcycle fuel injection
Replies: 57
Views: 73662

Re: Old Russian motorcycle fuel injection

Keep in mind the primary side of the coil will get to around 400V to 600V when you spark. You need insulation that can sustain this under your operating environment. AKA foggy day or cold morning with small amounts of condensation, it needs to not arc over.
by kb1gtt
Mon May 04, 2020 12:16 am
Forum: Dev: Hardware
Topic: DEAD DESIGN rusEfi own wide band controller board add-on using CJ125
Replies: 364
Views: 345284

Re: rusEfi own wide band controller board add-on using CJ125

Some history, -- Bosch made WO2 sensors and chips to interface there proprietary magic with an MCU. -- I think Waltech was the first to make a real open source WO2 circuit. It uses op-amps, and mostly discrete components, and mimics what the Bosch chip does. Waltech's stuff is not OEM and not AEQ ce...