rusefi.com

Does Mouser EU not ship to Sweden? They have a few thousand F405RG in stock.

@960 may have tips for EU sourcing of components.

InternetAthiest wrote: ↑

Wed Oct 09, 2019 1:22 am

Yeah, going to re-route it for LQFP64. Thinking of using the STM32F412RET6 instead.

Any reason for the F412 over the F405/407? The STM32F405RGT6 is only $4 more, and is fully supported by rusEfi out of the box.

Otherwise the G4 series has a different pin out but has more flash but at that point I'd rather up size to LQFP64. Now, SWD seems kinda sweet to have but would require the up size. It would also allow me to add status LEDs and CAN without impacting current I/O. Seems worth re-routing for those feat...

The STM32F070CBT comes from factory with the capability of flashing firmware via USB without changing the bootloader. This means that I do not need a SWD header. While technically true, one of the huge advantages of the whole STM32 family is that you can attach a debugger, set breakpoints, inspect ...

i believe RAM is your biggest risk. I would strongly recommend looking into rusEfi RAM and flash usage before ordering this PCB. I agree - the F070CB is not enough chip to run rusEfi. There are a few reasons it isn’t enough: It has no FPU. Since the firmware relies heavily on floating point math, p...

Three microRusEfi v0.3 boards are done! All started and ran my car great, and seem to behave identical to the v0.1 board I've been running.

My Focus has stepper gauges (tach, speed, temp, fuel), and zeroes the gauges when you unlock the car. A normal driver will probably never see it happen.

I'm now extremely curious if you can get Scilab to compile your block diagram in to a program, or even to a "normal" script output. Because if you can, we can design the ECU in Scilab.

Ok - those will be the same tune, other than ETB stuff (which isn't really useful to us anyway). I know I certainly have the VE/ignition tables from that engine handy, since mine is a 2002-ish 5.3 flex fuel van engine (LM7/L59/LM4/L33 all have the same VE table). I'll have to see if I can export the...

atntpt wrote: ↑

Tue Sep 10, 2019 8:57 pm

Testing on bench , I noticed if I power it via discovery usb the 5v line also varies .

I understand that you're testing on the bench, but how are the sensors connected? Are sensors connected at all?

I can certainly find/dump a stock 4.8 or 5.3 (or whatever) tune. Which cam is in each car? Stock GM truck?

atntpt wrote: ↑

Tue Sep 10, 2019 7:11 pm

Can anyone help me understand why do i have this noise on analog inputs ?
The frequency of the noise seams to sync with some kind of led blink or something

What does your wiring setup look like? What sensors are those connected to? How are they grounded? How is the ECU grounded?

By the way, I have an HPTuners license (and interface), so I can at least read GM ECUs, and view tunes uploaded by others to the HPT website. So I can rip particular maps (VE, injector compensation, etc) out of factory tunes if you're interested.

On #2: Russian is mostly correct, but some stuff can be close enough to get the engine at least running (though you may have to copy values over manually). The VE table for the GM ECUs does the same thing as ours, and I'd bet is certainly within 10% of what's "correct" for rusEfi to run the same eng...

Preface: I hold a US Private Pilots License and hang out with a bunch of aerospace engineers, so I'm familiar with how the aerospace world works with respect to engineering and manufacturing. Is it possible to use on one engine 2 Ecu? If one fault second understand and continue correct operation? It...

Why is it difficult to control idle with a pre-SC TB? Every OEM supercharger install on the planet puts the throttle before the blower, and doesn't have problems with idle control. What's wrong with putting the throttle before the SC, and running a normal vacuum-operated bypass valve in the supercha...

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...

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...

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...

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...

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...

I've left mine running for several days with the trigger simulator running the whole time without issue! Powered from +12v.

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.

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% ...

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...

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...

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 ...

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 ...

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...

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...