Search found 540 matches

by stefanst
Tue Jan 29, 2019 3:51 am
Forum: Hardware
Topic: 64 pin 176122-6 ECU connector board
Replies: 28
Views: 7837

Re: 64 pin 176122-6 ECU connector board

I've used needle-nose pliers. Not pretty, but: so far, so good.
by stefanst
Mon Jan 21, 2019 2:57 am
Forum: Software
Topic: Cranking Pattern Recognition
Replies: 6
Views: 410

Re: Cranking Pattern Recognition

Miata CRANK which for current rusEfi trigger logic is "secondary" signal is perfect for cranking. With CRANK signal only on the one hand there is no way to know current shaft position while on the other hand there is enough data to start fueling and sparking! At the moment rusEfi does not have the ...
by stefanst
Mon Jan 21, 2019 2:28 am
Forum: Software
Topic: Cranking Pattern Recognition
Replies: 6
Views: 410

Re: Cranking Pattern Recognition

I just realized- I think with NA Miata 10 ticks on the CRANK portion of the CAS means 5 full revolutions of the crank, not 2.5. So 17 ticks would mean 8.5 revs. Ouch. Or, I may be wrong.
by stefanst
Mon Jan 21, 2019 2:21 am
Forum: Software
Topic: Cranking Pattern Recognition
Replies: 6
Views: 410

Re: Cranking Pattern Recognition

While experimenting with this, I also noticed two things I thought worth mentioning: 1. Charge Angle under cranking dwell settings: This basically defines how many degrees before TDC to start dwelling the coils. I would advise AGAINST using that setting, unless you're certain you need it. Usually, a...
by stefanst
Mon Jan 21, 2019 2:12 am
Forum: Software
Topic: Cranking Pattern Recognition
Replies: 6
Views: 410

Cranking Pattern Recognition

I've built a few rusEfis that run/ran approx 5 Miatas of differing generations. A recurring complaint by the drivers is the slow start. It appears that others andreika ? experienced a similar problem, since he improved the code in this area a little. So, today I sat down with a rusEfi, a Jimstim and...
by stefanst
Wed Jan 16, 2019 4:53 am
Forum: Your car & your engine
Topic: 2005 Saab 9-3 2.0T Ion Mold
Replies: 13
Views: 784

Re: 2005 Saab 9-3 2.0T Ion Mold

Since it's a Saab, it will likely be reborn as a marital help for menopausal single women.
by stefanst
Mon Jan 14, 2019 1:10 am
Forum: Your car & your engine
Topic: Standard NA6 Miata 89-93 Configuration
Replies: 26
Views: 1071

Standard NA6 Miata 89-93 Configuration

Many people entering the aftermarket ECU-world are worried about the complexities. The don't want to have to hack up their car's wiring harness, swap parts and make it difficult to go back to stock. What they want is as plug-and-play as possible. If we can provide a true PNP solution, the initial th...
by stefanst
Fri Jan 04, 2019 3:12 pm
Forum: Hardware
Topic: Search for power supply chip
Replies: 36
Views: 1574

Re: Search for power supply chip

TLE7368 (3E) is actually only $6.45 on Mouser. It is a fairly complex chip that should be able to fulfill all our power supply needs. But the complexity also makes it a bit of a pain to implement. It will require a fair bit of external circuitry to work.
by stefanst
Fri Jan 04, 2019 2:47 pm
Forum: Hardware
Topic: rusEfi Use Scenarios for Next Hardware Iteration
Replies: 44
Views: 2084

Re: rusEfi Use Scenarios for Next Hardware Iteration

So maybe keep the long-term trim in sram and have a manual option to apply it to the VE values? I guess that would have to be done in TS somehow.
by stefanst
Fri Jan 04, 2019 3:17 am
Forum: Hardware
Topic: rusEfi Use Scenarios for Next Hardware Iteration
Replies: 44
Views: 2084

Re: rusEfi Use Scenarios for Next Hardware Iteration

One more idea: backup power? There's always constant power available on vehicle connector, let's use this for backup sram/rtc. We could potentially store some data such as long term fuel trim. I think long-term fuel trim should be stored in non-volatile memory. SRAM would be for logged error codes ...
by stefanst
Tue Jan 01, 2019 4:47 am
Forum: Hardware
Topic: TLE8110 10 channel low side breakout board
Replies: 27
Views: 1418

Re: TLE8110 10 channel low side breakout board10

[...]We want output wire holes to be bigger like on https://github.com/rusefi/rusefi/tree/master/hardware/low_side_tle6240 [...] We also want holes under the heat dissipating belly of the chip like on https://github.com/rusefi/rusefi/tree/master/hardware/DDPAK_breakout - these are solderable holes ...
by stefanst
Tue Jan 01, 2019 4:25 am
Forum: Hardware
Topic: TLE8110 10 channel low side breakout board
Replies: 27
Views: 1418

Re: TLE8110 10 channel low side breakout board10

That should help- thanks!
@: Installing KiCAD 4.05 now.
For the breakout board: Do we want two rows of single pin headers for easy breadboard installation, or something more creative to minimize real estate needed?
by stefanst
Tue Jan 01, 2019 4:22 am
Forum: Hardware
Topic: Hardware status
Replies: 12
Views: 12597

Re: Hardware status

Alright- I sent inquiries to "Espeed" and "Kinkong". They seem to be the Chinese ECU case guys.
by stefanst
Tue Jan 01, 2019 3:14 am
Forum: Hardware
Topic: let's choose an enclosure
Replies: 88
Views: 12222

Re: let's choose an enclosure

How about mounting the ECU on an aluminium plate, then potting what ever shape we want. Basically make a silicon mold, assemble the board, place it in the silicon mold. Then pour in something like technomelt, and wait for it to cool down. https://www.technomelt-simply3.com/en/pcb-markets.html It se...
by stefanst
Tue Jan 01, 2019 2:38 am
Forum: Hardware
Topic: Hardware status
Replies: 12
Views: 12597

Re: Hardware status

There are a bunch of cases on Alibaba. Don't look too expensive. Maybe $10 or so. Should I inquire?
by stefanst
Tue Jan 01, 2019 2:18 am
Forum: Hardware
Topic: TLE8110 10 channel low side breakout board
Replies: 27
Views: 1418

Re: TLE8110 breakout board

I can take a stab at it, but it looks like this new Infineon package DG-PSO-36 is not available in the KICAD package repos. So I'll have to design it. It's been a while since I've done something like that.
by stefanst
Sun Dec 23, 2018 7:55 pm
Forum: Hardware
Topic: 22mm Manhattan
Replies: 39
Views: 1903

Re: 22mm Manhattan

From a VERY general standpoint, the best solution with the highest adoption-rate would be one where we have a custom solution for every car in that car's original ECU case with the stock connector in the stock location. Most rusefi users will want to have an installation in their car as easy as poss...
by stefanst
Thu Nov 22, 2018 9:17 pm
Forum: Hello World
Topic: Hello From NJ !
Replies: 2
Views: 446

Re: Hello From NJ !

That's the unit I set up for Joe about 2 years back. The new owner [nowski 1991] has been trying to sell the unit on NJ Miatas. Not sure if he ever did.
by stefanst
Wed Oct 03, 2018 12:25 am
Forum: Your car & your engine
Topic: 2005 Nordic Fjord Pine Tree Green MIATA
Replies: 60
Views: 4321

Re: 2005 Nordic Fjord Pine Tree Green MIATA

I think 115200 is the safe max.
by stefanst
Mon Sep 03, 2018 7:05 pm
Forum: Hello World
Topic: 2004 Mazda MX-5 1.8 VVT Frankenso project
Replies: 32
Views: 1277

Re: 2004 Mazda MX-5 1.8 VVT Frankenso project

There are no Dollar stores in France :mrgreen:
by stefanst
Fri Aug 24, 2018 3:20 pm
Forum: Hello World
Topic: Hello. Frankenso 92 Miata
Replies: 11
Views: 978

Re: Hello. Frankenso 92 Miata

Thanks for doing the research on this. However, I think, this idea has been abandoned a few board-generations back and we should purge it from the Wiki immediately and decisively. The 64 pin connector works for all the cars that the 48 pin connector works for and then some. Cases are cheap and plent...
by stefanst
Fri Aug 24, 2018 2:19 am
Forum: Hello World
Topic: Hello. Frankenso 92 Miata
Replies: 11
Views: 978

Re: Hello. Frankenso 92 Miata

NA Miata is pretty much plug and play. You just solder the standard 64 pin connector to the board. All the jumper-ing is done on the board. Then you just plug in the stock ECU connectors from the harness. There are two things you may want to do right away though: Install a Wideband O2 sensor- tuning...
by stefanst
Fri Aug 24, 2018 1:49 am
Forum: Hello World
Topic: Hello. Frankenso 92 Miata
Replies: 11
Views: 978

Re: Hello. Frankenso 92 Miata

That should be a no-brainer for you then. Are you planning on getting a pre-soldered one (my personal preference) or are you an SMD-champion who wants to populate the board himself?
by stefanst
Thu Aug 23, 2018 7:01 pm
Forum: Hello World
Topic: Hello. Frankenso 92 Miata
Replies: 11
Views: 978

Re: Hello. Frankenso 92 Miata

Hi! Thanks for the pictures and welcome to this (still fairly exclusive) club of rusefi-istas. 92 Miata should be about as easy a project as can be. The standard setup for your engine is worked out pretty well and the standard maps should have you driving in no time. A few questions: - Are you runni...
by stefanst
Wed Aug 22, 2018 1:47 am
Forum: Your car & your engine
Topic: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Replies: 117
Views: 11192

Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38

That idle valve behavior during cranking is weird and wrong. Mine doesn't do that. See attached picture. I do seem remember, however, that I had a similar problem a few firmware revisions back. Are you running the latest and greatest? I noticed that you are using a pretty high value-75. Maybe you're...
by stefanst
Wed Aug 22, 2018 1:27 am
Forum: Hardware
Topic: What's up with all the mini-USB ports
Replies: 5
Views: 585

Re: What's up with all the mini-USB ports

Found it - it wasn't even all that well hidden :mrgreen:
by stefanst
Wed Aug 22, 2018 1:21 am
Forum: Software
Topic: VVT Debug fail
Replies: 10
Views: 843

Re: VVT Debug fail

More "D" improved the oscillations a lot, especially on a warm engine. The "P" term is still going a bit crazy, essentially dithering around the target, but since our control is fairly slow to react, this seems to work quite well, especially at higher rpms. One thing I noticed, running the board on ...
by stefanst
Wed Aug 22, 2018 1:12 am
Forum: Hardware
Topic: What's up with all the mini-USB ports
Replies: 5
Views: 585

Re: What's up with all the mini-USB ports

I'd forgotten about that driver. TTL works now.
Why only 38400 baud though?
by stefanst
Tue Aug 21, 2018 1:37 am
Forum: Hardware
Topic: What's up with all the mini-USB ports
Replies: 5
Views: 585

What's up with all the mini-USB ports

My latest Frankenso board has three spots for mini-USB ports. Two of them are populated with a connector. One is labeled TTL and when I plug this into my computer, a friendly little green LED comes on. Nothing else seems to happen though. One is labeled PROG, but not populated. (Even though I believ...
by stefanst
Sat Aug 18, 2018 1:02 am
Forum: Your car & your engine
Topic: 1991 Miata with 1.8l VVT engine in NJ #44
Replies: 18
Views: 1562

Re: 1991 Miata with 1.8l VVT engine in NJ #44

It appears that we still have an issue that we saw last year on my '03 as well. VVT target does not get interpolated when we're outside the boundaries of the table. With the top row set at 85kpa, under full throttle (MAP around 95 or so), the target values (red line in the second graph window below)...