Search found 3469 matches

by kb1gtt
Fri Oct 11, 2019 8:56 am
Forum: Your car & your engine
Topic: 1998 BMW V12 engine M73
Replies: 31
Views: 647

Re: 1998 BMW V12 engine M73

One step closer to showing up these folks?
by kb1gtt
Wed Oct 09, 2019 4:12 pm
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 46
Views: 822

Re: Sprut - A newbies try to design an ECU

-- 5V is only 5V until you say oops, then replace the entire board. We've all made mistakes, and a 12V tolerant input is a beneficial feature. -- HIP9011 and TPIC8108 have a history of headache here. AKA don't believe datasheets. I suggest some pads to allow changes I have have done. The TPIC seems ...
by kb1gtt
Wed Oct 09, 2019 9:32 am
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 46
Views: 822

Re: Sprut - A newbies try to design an ECU

-- 14V on input 1 would result in to much current dumped to the 5V rail. Causing 5V rail to be more like 10V, so it would break things. You want something more like 10k for R115. -- Suggest you look at the notes on Franksenso knock about calculating the XTAL caps. That circuit has like a 50% failure...
by kb1gtt
Tue Oct 08, 2019 4:09 pm
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 46
Views: 822

Re: Sprut - A newbies try to design an ECU

Some other comments, validate your footprints before going for MFG of the board. Print it out 100% scale and put your components on the paper. You'll likely resolve several issues before you have PCB costs and lead time issues. Enclosure? Heatsink? Do you know you can export to OnShape then you coul...
by kb1gtt
Tue Oct 08, 2019 4:07 pm
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 46
Views: 822

Re: Sprut - A newbies try to design an ECU

Is there a link to download? Github, etc? Is that KC5? I'm missing many details right now, but others seem to have found things like a schematic.
by kb1gtt
Sun Oct 06, 2019 2:11 am
Forum: Your car & your engine
Topic: 2006 Volkswagen Passat 2.0 Turbo GDI test mule
Replies: 1
Views: 76

Re: 2006 Volkswagen Passat 2.0 Turbo GDI test mule

Horizontal mounted, that looks just like my A3. Let me know how easy / hard it is to get to the ECU.
by kb1gtt
Sun Oct 06, 2019 2:07 am
Forum: Your car & your engine
Topic: hf predator engine 212cc #54
Replies: 6
Views: 148

Re: hf predator engine 212cc #54

I like that as a moto. "rusEFI, don't touch your sexy exhaust" I think that be a great bumper sticker.
by kb1gtt
Sun Oct 06, 2019 2:04 am
Forum: Your car & your engine
Topic: 99 miata 1.8 turbo PnP setup #53
Replies: 65
Views: 1116

Re: 99 miata 1.8 turbo PnP setup #53

Congratulations, you have just completed step 1 in world domination :)
by kb1gtt
Mon Sep 30, 2019 4:24 pm
Forum: Hardware
Topic: rusEFI display
Replies: 54
Views: 6873

Re: rusEFI display

I know poor designs that cause steppers to be replaced in a similar fashion. So no I would say that does not count for design criteria. It is likely that the POT's in the flappers were simply of poor design. AKA they used a wrong current on the wiper. Design criteria should be something like a needl...
by kb1gtt
Mon Sep 30, 2019 4:16 pm
Forum: Software
Topic: ETB or 36/1 performance issue?
Replies: 13
Views: 263

Re: electronic throttle body control ETB

With out other stuff, can you open and close the ETB fully? I wonder if the higher amps at WOT are causing a ground to pull up and for the command bits to get lost as they might not generate enough voltage.
by kb1gtt
Mon Sep 30, 2019 9:46 am
Forum: Hardware
Topic: rusEFI display
Replies: 54
Views: 6873

Re: rusEFI display

Yes I do not like open looped motors. Steppers are just a cheap open loop motor. I also do not see definitive design criteria. I just see people claiming OEM's do it so it's better. OEM's have different design criteria which allows them to use steppers. I think we need a more robust dash at the expe...
by kb1gtt
Sun Sep 29, 2019 9:03 pm
Forum: Hardware
Topic: rusEFI display
Replies: 54
Views: 6873

Re: rusEFI display

Small resistance on the electrical connection causes all sorts of issues. The thin needles can get bent and drag. Steppers are fragile that's why they are put inside a plastic box. Fast needles can also be a problem. Flutter can make the needle invisible.
by kb1gtt
Sun Sep 29, 2019 4:24 pm
Forum: Hardware
Topic: rusEFI display
Replies: 54
Views: 6873

Re: rusEFI display

OEM's have quality control that allows for reliable assembly. We do not have that kind of control over the assembly. There are reasons why RC stuff are servos and not stepper. Also there are reasons why OEM's are stepper. It's all about a certain level of quality for minimal dollar. If you can contr...
by kb1gtt
Sat Sep 28, 2019 11:31 pm
Forum: Hardware
Topic: rusEFI display
Replies: 54
Views: 6873

Re: rusEFI display

How many of those pieces can you get today? What pieces did you use to make it? My concerns with steppers is long term availability, as well as minor electrical issues causing missed steps, so wandering needle. Those RC servo's have been around for like 30 years and you'll be able to get them in 30 ...
by kb1gtt
Sat Sep 28, 2019 8:09 am
Forum: Hardware
Topic: Sprut - A newbies try to design an ECU
Replies: 46
Views: 822

Re: Sprut - A newbies try to design an ECU

Could we stear you to contribute to features which we currently have problems with? Frankenso has issues with the knock circuit. Also there are issues with displaying stuff on the dash guages. I dream of the below.
https://rusefi.com//forum/viewtopic.php?f=4&t=775
by kb1gtt
Thu Sep 26, 2019 9:41 am
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 529
Views: 115727

Re: Frankenso - ECU shield compatible with OEM case / official

Depends on the goal. If the goal is to light a cigarette it's probably ok. If the goal is to make the Apple product work you want the same fuse.
by kb1gtt
Thu Sep 26, 2019 9:38 am
Forum: Your car & your engine
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 144
Views: 20048

Re: red 2003 VVT test mule Miata NB2 #27

Can you put a heatsink on it? Also what frequency or period is your base pwm? I'm also not liking your semi long wires and semi crappy connections to power and the etb. Those connections need to be low impedance.
by kb1gtt
Thu Sep 26, 2019 9:27 am
Forum: Misc
Topic: Catch can
Replies: 0
Views: 99

Catch can

This was mentioned in slack. It should probably be made more permanent. So I'm posting it here. Thanks Nik for posting it to slack.
by kb1gtt
Tue Sep 24, 2019 6:06 pm
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 529
Views: 115727

Re: Frankenso - ECU shield compatible with OEM case / official

If it's a problem, you can also replace the 0805 with a solder snot.
by kb1gtt
Mon Sep 23, 2019 11:29 pm
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 529
Views: 115727

Re: Frankenso - ECU shield compatible with OEM case / official

Inj limit is unknown. I expect the limit is based on the mosfet. I think qty 1 mosfet will over heat at around 3 perhaps 4 amps. Each high z injector will conduct about 1 amp. The 0805 is probably fine even up to 5 amps. However the mosfet may over heat and go into shutdown. This is all guess work. ...
by kb1gtt
Mon Sep 23, 2019 4:16 pm
Forum: Your car & your engine
Topic: 99 miata 1.8 turbo PnP setup #53
Replies: 65
Views: 1116

Re: 99 miata 1.8 turbo PnP setup

We put the documentation into the "ether" and it blew away in to the cosmos. Turns out the cloud and ether are two different things, who knew. https://www.merriam-webster.com/dictionary/the%20ether It would be great is better documentation existed. You tube video series like what Sydney Comic Hound ...
by kb1gtt
Mon Sep 23, 2019 9:17 am
Forum: Your car & your engine
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 144
Views: 20048

Re: red 2003 VVT test mule Miata NB2 #27

How close is this to your other Miata in the garage? Perhaps do a compare with that one? Also does it react this way when on the OEM?
by kb1gtt
Sun Sep 22, 2019 2:07 pm
Forum: Software
Topic: 101 on Matlab/Simulink
Replies: 11
Views: 1843

Re: 101 on Matlab/Simulink

This looks like someone used an Arduino as a real world physical interface for SciLab. They pulse a LED with it. It may show key bits about how to compile code with SciLab which could be used on a MCU.
by kb1gtt
Sun Sep 22, 2019 1:13 pm
Forum: Software
Topic: 101 on Matlab/Simulink
Replies: 11
Views: 1843

Re: 101 on Matlab/Simulink

I believe scilab can but I have no idea how to do it. I'm finding lots of of differences with how scilab handles code. I don't know why it's so hard to instanciate your variables. That is why I posted the video. I currently manually declare the vars so they can be used. As well it appears it only ha...
by kb1gtt
Sun Sep 22, 2019 1:53 am
Forum: Software
Topic: 101 on Matlab/Simulink
Replies: 11
Views: 1843

Re: 101 on Matlab/Simulink

I've got a first stab at a PID, many things are wrong, but technically it does core functionality. See attached zip with brief video showing the steps to make it execute.
SciLab_PID_First.png
SciLab_PID_First.png (109.13 KiB) Viewed 283 times
by kb1gtt
Fri Sep 20, 2019 11:41 pm
Forum: Hardware
Topic: microRusEfi
Replies: 179
Views: 9489

Re: microRusEfi

I miss spoke. It was not TE but Molex. I believe the 3D came from here.
https://www.molex.com/molex/products/da ... EADERS.xml

I understand the china component may have slight differences from the OEM Molex part.
by kb1gtt
Fri Sep 20, 2019 9:22 am
Forum: Hardware
Topic: EFI for small engines
Replies: 28
Views: 1048

Re: EFI for small engines

Not that I'm aware of, but it might go the other way :) I suggest learning KICAD, I really see little reason to use Altium, it limits your ability to share with designers.
by kb1gtt
Thu Sep 19, 2019 8:54 pm
Forum: Hardware
Topic: EFI for small engines
Replies: 28
Views: 1048

Re: EFI for small engines

Is that a slightly different enclosure? Why do you not like the original MRE enclosure?
by kb1gtt
Thu Sep 19, 2019 10:07 am
Forum: Hardware
Topic: microRusEfi
Replies: 179
Views: 9489

Re: microRusEfi

I'm missing something here. Is the claim that the factory provided 3D model does not match the factory provided drawing? The model we have is from TE. If the concern is that the PCB model is slightly wrong, that's driven by KICAD, and the KICAD lib should be updated, then that should drive the 3D fi...