rusefi.com

Want anybody to do a review before you send it off?

AndreyB wrote: ↑

Mon Sep 28, 2020 6:47 pm

I do not remember all the details on this thread and as is I am unable to help effectively

He bent the crimp pins that go in the plug

. mck1117 wrote: ↑ There are a few boards remaining on the shelf in this batch - PM me if you're interested in getting your hands on some! Does this mean the others have been shipped? Thanks, and I may still be interested in another board if no one else wants one. Some have shipped - more will ship...

So I brought my car to a mechanic specialized in Miatas, and he couldn't figure out what is happening either. We tried jumping the fuel pumps, pumps run but fail cranking. Now we both think that either the configuration is not right or the ECU itself is probably faulty... Did you try the diagnostic...

but MY gap on my 36-2 is at ~126BTDC #1. does my Global off set need to be -126? I don't remember off the top of my head if it's + or - 126, but it's easy enough to figure out with a timing light (or just trying to start it!). Still not seeing events on the cam pulse :-/ Don't worry about the cam s...

bumble wrote: ↑

Wed Sep 23, 2020 11:44 am

mck1117 wrote: ↑

Wed Sep 23, 2020 5:35 am

There are a few boards remaining on the shelf in this batch - PM me if you're interested in getting your hands on some!

Which revision?

0.4

AndreyB wrote: ↑

Wed Sep 23, 2020 7:47 am

which is a "4 stroke without cam"

This does, however, mean that you'll need to configure the ignition in "wasted spark" mode, and enable "two wire wasted" so that it will operate in wasted spark using all 4 outputs.

So, functionality isn't quite there, or present but being refined? Not yet present. We're working on getting the building blocks in place in a well thought out (read: flexible) and well integrated way, but nobody has yet actually controlled a transmission with it :) Regardless, if there's another b...

Hoping to be able to get (a basic) 4l80e trans control algorithm up and running also. I'd really like to do this with a similar application (V8 + 4l80e). Is it supported in the firmware? Any updates @SVeilleux9? There are transmission control firmware efforts slowly progressing. For example: https:...

However, we might employ offloading some of these jobs to microcontrollers like Arduino or even ARM-based ones, like the stm32 by cross-compiling. If anything, I would actually forsee the rusEfi architecture going the other direction. Instead of moving higher-level "frontal lobe" functions to a mor...

They post a back side picture, doesn't look very complicated. http://www.gps4net.com/images/gps4net/products/g4n03tap/g4n03tap_pcb.jpg That SOIC8 on the top is a normal CAN transceiver, SN65HVD1050. The SOIC14 below it is an MCP6564 quad comparator. So whatever they're doing is clever, but not terr...

So are there parts of the code which rely on such nanosecond latency issues? Not nanoseconds, but <1us jitter is important. That engine is coming around whether you're ready for it or not, and you better be ready to fire the ignition system at the right time. At 6000 RPM, one degree passes in 27 mi...

On a raspberry pi the GPIO latency is on the order of 50-60us. 3000 times more than the stm32.

Hello, Recent Single-board x86 machines has UART, SPI. They also have High-precision Event Timers. I was wondering if there was any port of the firmware for such machines. https://up-board.org/upsquared/specifications/ What's the latency like from the CPU core to an IO pin? I'd be curious about the...

dexter_lab wrote: ↑

Sun Sep 13, 2020 3:23 pm

Great work, impressed. Are they suppose to produce that sort of noise?

That medium frequency vibration sounds like the PID is underdamped.

Kavabanga, did you use the PID autotune button to tune them?

AndreyB wrote: ↑

Sat Sep 12, 2020 7:25 am

mapaul wrote: ↑

Sat Sep 12, 2020 5:14 am

Hello My name is Paul and I'm in Seattle.

Seattle is one of rusEFI clusters There are two other contributors in Seattle.

If you see a green Volvo 240 wagon go by making V8 noises, it's probably rusEfi powered!

Probably doesn't run warm enough to need the vents - I'd be more concerned about gunk getting in than heat getting out! A spray conformal coat might be a good idea on the pcb if it's exposed like that.

Partially assembled boards have arrived from China!

That's pretty amazing. I'd be interesting in trying to build one.

flexus wrote: ↑

Wed Sep 09, 2020 4:30 am

ya mind tossing an extra board in to ship to Atlantis? +1 for the one you zed. Gotta make mgfoster pay for the shipping to keep costs down.

Anything we can do to make mgfoster pay is worth it.

bill wrote: ↑

Sun Sep 06, 2020 10:34 am

thanks. i will check the sensor on my mid-90's german luxo-barge and see if they are similar/same.

Not particularly important exactly which sensor it is - they used a lot of different part numbers for different connectors/body shapes but most post-1990 Bosch sensors are exactly the same.

now tracked on github: https://github.com/rusefi/rusefi/issues/1761

bill wrote: ↑

Fri Sep 04, 2020 9:26 pm

what brand/model of knock detector/ mic are you using for this??

That hammer test was with the stock sensor that Volvo put there in 1991. It's the garden variety broadband Bosch knock sensor, part number 261231006.

and 12 bit depth would be fine also... although it says 1024 samples, which is 10 bit... which would probably be okay also, considering the S/N is probably around 50db or less 16bit = 96 db sound The ADCs on all* STM32 parts are 12-bit. * the stm32f373 family has an additional 16-bit delta-sigma AD...

question..." I am sampling at 115KHz," ... can the mic even pick up anything above 20 KHZ? And if the knock is at 10kHZ, then do you need this high of sampling rate? seems 48K is more than enough... basically the HZ you want to use (10Khz) times 2 = sample rate needed and 12 bit depth would be fine...

And here's some real data from a car:
Captured while just idling the car. Those spikes are tapping on the block with a hammer!

Ok, time for results (from the bench)! Here is a characterization of the analog filter (schematic above), compared with a few configurations of digital filter implemented in software on the stm32. image.png Blue is the response of the hardware itself - and it performs exactly as designed. The passba...

Most excellent! How did you configure the ecu to handle the the turbo crossover valve?

Here are the details of how I had it connected:
And some photos of that:

missing zener