Search found 225 matches

by mck1117
Mon Aug 19, 2019 9:33 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

Also I understand D1 gets hot. Perhaps that would have some thermal via's. Yes - D1 is also dissipating maybe 1/10 watt, but it has almost no thermal conduction to the case, and almost all the conduction it has is to the already-hot Q1. Probably a better plan to investigate using a pfet instead, si...
by mck1117
Mon Aug 19, 2019 5:49 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

Q1 doesn't switch. The tle8888 is using Q1 as an external linear regulator to get the dissipation out of the tle8888 itself, then doing the precise 6v -> 5v regulation internally. Per the tle8888 datasheet, page 58: A linear pre-regulator with an external logic level power MOSFET is implemented to k...
by mck1117
Mon Aug 19, 2019 4:17 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

Stm32 does. 45-50c internal stm32 temperature is consistent with what I've seen running on 12v, sitting on carpet with only the bottom half of the case. My board pulls just shy of 300mA. So Q1 is dissipating (12v-6v) * 300mA = 1.8W. The 8888 should be dissipating around 0.3 watt in its regulator, pl...
by mck1117
Thu Aug 15, 2019 9:30 pm
Forum: Your car & your engine
Topic: 1991 Volvo 240 Racecar #49
Replies: 3
Views: 212

Re: 1991 Volvo 240 Racecar #49

I suppose I should provide an update on this car: July 17 I took the car to a track day, running on Frankenso. Other than identifying a (now fixed) trigger performance bug, the ECU did fine. The car had some pretty serious windshield fogging problems since it was raining, but that wasn't rusEfi's fa...
by mck1117
Thu Aug 15, 2019 8:28 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

This got posted on Facebook, but not in this thread! microRusefi has now run an engine! Last week I successfully wired and started my Volvo b230 on microRusefi serial number 1. https://www.youtube.com/watch?v=YD1suLdczv8 Since the engine was already running on Frankenso, the tune ported over with al...
by mck1117
Thu Aug 15, 2019 8:21 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

I've left mine running for several days with the trigger simulator running the whole time without issue! Powered from +12v.
by mck1117
Tue Aug 13, 2019 8:33 pm
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 260
Views: 21673

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

Internal ADC is interesting - it's also not bosch, so documentation is far easier to find, and it's far easier to actually buy one (Mouser has them in stock). And they're cheaper: $6.55 in single quantities.
by mck1117
Tue Aug 06, 2019 8:47 pm
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 726

Re: Hello Off Road World!

I think trying to run those extra 30 volts is probably unnecessary. I bet it will work just fine at 72v, though the injectors may open a tiny bit slower. From the link with scope traces, the part circled is the only part that would change: https://imgur.com/laM5r6s.png The slope would be around 25% ...
by mck1117
Tue Aug 06, 2019 4:32 am
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 510
Views: 110643

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

When you get the Frankenso pre made, can you see red dots of glue under the 0805s on the underside. I hear that 0603 and smaller will stay on the underside without glue with a 2 oven process - oven solder bottom side parts and re oven for the top side parts -, due to the solder surface tension, but...
by mck1117
Mon Aug 05, 2019 7:06 pm
Forum: Hello World
Topic: Hello from Wisconsin
Replies: 6
Views: 132

Re: Hello from Wisconsin

First, how well has tuning worked with rusefi from adding a turbo to a vehicle that originally was N/A? A few of us now have run NA and turbo on the same engine with rusEfi. I've done it on my two Volvos (one NA, one turbo), and a friend of mine did it on his NB Miata. Ultimately tuning with a turb...
by mck1117
Thu Aug 01, 2019 12:58 am
Forum: Hardware
Topic: Old Russian motorcycle fuel injection
Replies: 17
Views: 567

Re: Old Russian motorcycle fuel injection

So for analog sensors, I count: 4x TPS (2 per ETB) 2x MAP 2x oil temperature 1x intake air temperature 2x "pedal" input 2x wideband Which is a count of 13, which could maybe fit on Frankenso with some rewiring, but might be more hassle than its worth. If you could temporarily live with a single oil ...
by mck1117
Wed Jul 31, 2019 10:11 pm
Forum: Your car & your engine
Topic: 1990 Geo Storm GSI - Advice/Suggestions? #18
Replies: 261
Views: 24425

Re: 1990 Geo Storm GSI - Advice/Suggestions? #18

Hey, more people with LS engines in the PNW! I have a 1993 Volvo 240 with an LS swap that I'll convert to rusEfi at some point (the car was running rusEfi when it had a turbo 4 cyl). I'm up in Kirkland, and noxz on the forum is in Seattle. I could be convinced to come to the rusEfi party if it's on ...
by mck1117
Wed Jul 31, 2019 3:55 am
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 726

Re: Hello Off Road World!

I had a chance to look at the OEM circuit, and it looks like the CY220 uses a very similar architecture as the MC33816 or PT2000. There's really only one architecture out there for running DI injectors, and they both implement it. Because peak-and-hold injector drivers like these run closed-loop con...
by mck1117
Tue Jul 30, 2019 11:51 pm
Forum: Your car & your engine
Topic: Моё Чудо ... VW Passat B4 ABA ... #16
Replies: 103
Views: 14300

Re: Моё Чудо ... VW Passat B4 ABA ... #16

I am very interested how to tune Injection Phase ??? For engines like ours, injection phase doesn't really matter much. You will probably get slightly better emissions, cold start, and idle smoothness if you inject against a closed valve so the fuel vaporizes fully by the time the valve opens. I wa...
by mck1117
Tue Jul 30, 2019 11:41 pm
Forum: Hardware
Topic: Honda CBR600RR fuel injection
Replies: 45
Views: 1250

Re: Honda CBR600RR fuel injection

I've heard not great things about Innovate's reliability. A few of us here have had good luck with AEM's wideband O2 sensors and gauges. They make both standalone controllers (no gauge) and integrated gauge+controllers. The gauges include an analog output that you can wire to the ECU so it knows the...
by mck1117
Tue Jul 30, 2019 11:37 pm
Forum: Hardware
Topic: Old Russian motorcycle fuel injection
Replies: 17
Views: 567

Re: Old Russian motorcycle fuel injection

But what i will make with sensors? More precisely, with a count of them, because i have more sensors, than analog inputs on Frankenso What's the full list of sensors you plan to run on your bike? The second - is CAN-bus. Frankenso can recieve data from sensors by CAN-bus using other unit, which wil...
by mck1117
Mon Jul 29, 2019 10:00 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

In my opinion... russian has wrong / low / undersized starting battery .. (or wrong starter, or wrong starter wiring - high transient resistance) If battery voltage drops below 10V when we cranking .. then we have problem ... :roll: "input voltage" pulses and "many in-chip voltage stabilisers" don'...
by mck1117
Fri Jul 26, 2019 11:03 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

How low and for how long will depend on the engine, battery, vehicle wiring, etc, but it certainly wouldn't help if there was a dubious connection somewhere.
by mck1117
Fri Jul 26, 2019 10:49 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

12V-switched is where most of the bulk caps are. We should have a PMOSFET to prevent back flow during cranking when the 12V will drop. Currently we loose the bulk caps during this cranking time. True - that will help with very brief dips, maybe 1ms at most. I think the actual issue with dropout dur...
by mck1117
Fri Jul 26, 2019 8:56 pm
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 726

Re: Hello Off Road World!

chip which is desired for around 80V can drive higher by changing the resistor divider. But there are still other limits. And those other limitations are significant. To be able to turn on the high side nfets, you have to get the gate above the supply voltage, which means the gate driver needs to b...
by mck1117
Fri Jul 26, 2019 8:36 pm
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

This board was soldered with a stencil, paste, and reflow oven. They came out pretty perfect: https://i.imgur.com/2x4iNBg.jpg (This is the STM32, but the 8888 looked similar. I think this is a pic of the board that Russian has, if not, his is the other identical one I assembled at the same time) I o...
by mck1117
Fri Jul 26, 2019 9:08 am
Forum: Hardware
Topic: microRusEfi
Replies: 137
Views: 4713

Re: microRusEfi

Let's start with the first rule of electronics diagnosis: Thou Shalt Check Voltages Apply 12v to the 12v pin, then check the voltage at: Anode of diode D1 (end towards connector): expected ~12v Cathode of diode D1 (end towards Q1/away from connector): expected ~11.45v Pin 2 of Q1 (large tab, toward ...
by mck1117
Thu Jul 25, 2019 6:38 am
Forum: Misc
Topic: Is stm32f4 the right chip?
Replies: 91
Views: 13974

Re: Is stm32f4 the right chip?

The tricore and GTM can do some cool stuff. However, I don't think it's worth our time to port rusefi to TriCore. There isn't a real problem with the stm32. The GTM is pretty cool, but we don't really need it-our existing software scheduler works just fine. Likewise, 5v I/O would be pretty neat, but...
by mck1117
Thu Jul 18, 2019 10:13 pm
Forum: Software
Topic: hip9011 integration
Replies: 115
Views: 16663

Re: hip9011 integration

Why not just drive it from the MCU? The STM32 has one or two MCO (master clock out) pin(s) that output a clock divided off of the core clock, which would work great for this application.
by mck1117
Fri Jul 12, 2019 6:25 am
Forum: Hello World
Topic: Hello Off Road World!
Replies: 26
Views: 726

Re: Hello Off Road World!

- Try to find out as much as possible about the injectors as it seems the MC33816 might not be able to generate sufficiently high voltage? - TBC If the injectors are solenoid (not piezo), the mc33816 can probably drive the injectors. Noxz will eventually be testing with modern Denso diesel injector...
by mck1117
Thu Jul 11, 2019 8:54 am
Forum: Hello World
Topic: Hello from France - Project for an old british car and my own approach to HAL
Replies: 18
Views: 397

Re: Hello from France - Project for an old british car and my own approach to HAL

I understand it's lite in terms of C compiler projects, which have many useful checks and balances. However it's bloated compared to bare metal hand written assembly. Absolutely - but I think that's a feature, not a bug. I'd have a hard time beating GCC at most of the stuff our firmware does. I cou...
by mck1117
Thu Jul 11, 2019 8:53 am
Forum: Hello World
Topic: Hello from France - Project for an old british car and my own approach to HAL
Replies: 18
Views: 397

Re: Hello from France - Project for an old british car and my own approach to HAL

(oops - I was typing this response when you replied - but we're on the same page here) Could HWA also be used as a kind of GRC add-on? Nope - something GRC-like is very high level, and HWA (or ChibiOS/HAL that we use) are for the very lowest level of hardware interaction. but the idea of these block...
by mck1117
Thu Jul 11, 2019 7:59 am
Forum: Hello World
Topic: Hello from France - Project for an old british car and my own approach to HAL
Replies: 18
Views: 397

Re: Hello from France - Project for an old british car and my own approach to HAL

Welcome! That car is fantastic. It'd be a shame if you ruined it with rusEfi... :P I've seen some pretty convincing fake Weber DCOE carbs that covertly contain a pair of fuel injectors... I think Jenvey in the UK makes some, but they're something like 600 GBP each (2 cylinders worth - so you'd need ...
by mck1117
Thu Jul 11, 2019 6:03 am
Forum: Hardware
Topic: rusEfi own wide band controller board add-on using CJ125
Replies: 260
Views: 21673

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

In that case, it probably isn't working properly. Can you set the debug mode to CJ125, and share a datalog?
by mck1117
Wed Jul 10, 2019 6:21 am
Forum: Hardware
Topic: Frankenso - ECU shield compatible with OEM case / official
Replies: 510
Views: 110643

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

oh, that's what it's for! do they need tape for a suction cup to work? Yep, the pick-n-place machine uses vacuum and a little rubber suction cuppy thing to hold on to components. So anything that doesn't have a relatively uniform flat top needs a piece of tape or something. Likewise, the vertical U...