Search found 1493 matches

by mck1117
Wed Aug 09, 2023 7:01 pm
Forum: Dev: Software
Topic: VSS digital input
Replies: 14
Views: 22038

Re: VSS digital input

The stm32 internal pullup/pulldown should be on the order of 30-50k ohms. That's not your problem.
image.png
image.png (44.09 KiB) Viewed 21947 times
by mck1117
Mon Jul 31, 2023 7:55 am
Forum: Dev: Hardware
Topic: proteus iat and clt sensor drops temp when power apply
Replies: 3
Views: 9059

Re: proteus iat and clt sensor drops temp when power apply

Calibrate while the board is supplied with 12v. It doesn't know that the sensors don't have an accurate 5v pullup when the 12v ignition supply isn't active, so it reads wrong. When powered over USB, the 5v rail is really more like 4.6 volts due to the diode drop in the protection circuitry.
by mck1117
Fri Jul 14, 2023 6:05 pm
Forum: User Support
Topic: Injector and Ignition Pin Mapping
Replies: 12
Views: 18569

Re: Injector and Ignition Pin Mapping

As is, that message is more confusing than no message at all.

I'd write something like "wire each output to the corresponding cylinder number, rusEFI handles firing order"
by mck1117
Fri Jul 14, 2023 5:47 pm
Forum: User Support
Topic: Injector and Ignition Pin Mapping
Replies: 12
Views: 18569

Re: Injector and Ignition Pin Mapping

“As numbered from the end with pulleys” isn’t always true on V engines. Some MFG use various other schemes, including your BMW V12.
by mck1117
Fri Jul 07, 2023 9:02 pm
Forum: Tuning Support: Making it Run
Topic: CBR600RR Engine
Replies: 38
Views: 34074

Re: CBR600RR Engine

mtmotorsport wrote:
Fri Jul 07, 2023 8:58 pm
The actual FET you use for ignition coil control is very important. It needs to have a very high avalanche voltage (350v+), very fast turn off time at moderate current (5-10amps), and very low RDSon.
you don't want a FET at all, you want an IGBT designed for ignition coil applications
by mck1117
Thu Jun 22, 2023 8:17 pm
Forum: Dev: Software
Topic: VW Type 1 "Single port" injection
Replies: 6
Views: 15790

Re: VW Type 1 "Single port" injection

Run it in batch mode, but with the fuel injector flow rate set to half what it actually is. The fuel injector flow rate parameter is actually "injector flow per cylinder", not "injector flow per injector", but those usually align to be the same thing.
by mck1117
Tue Jun 13, 2023 8:40 am
Forum: You and your build
Topic: 2014 red kia rio 1.6 GDI M/T busted dreams
Replies: 55
Views: 144224

Re: 2014 red kia rio 1.6 GDI M/T busted dreams

AndreyB wrote:
Mon Jun 12, 2023 11:20 pm
Matt has fixed GDI4 start-up and there are now signs of life!!! https://rusefi.com/online/view.php?msq=1485
vids or it didn't happen
by mck1117
Wed Jun 07, 2023 4:18 am
Forum: Dev: Hardware
Topic: Wideband Controller: Fully Custom, no ASIC!
Replies: 199
Views: 435030

Re: Wideband Controller: Fully Custom, no ASIC!

any chance of a .bin file for this firmware, Im not a coder and can't get it to compile even watching 100 videos on how to do it, all I get is it can't find the directories after it does the bootloader section. It used to be checked in to the repo, but then we removed it and I forgot to upload a re...
by mck1117
Sun Jun 04, 2023 7:29 pm
Forum: Dev: Hardware
Topic: ECU accuracy
Replies: 6
Views: 5565

Re: ECU accuracy

I am not sure if we care for _all_ absolute values so much, we probably mostly care for lack of drift? We one area where we definitely care about precision is rusEFI WBO controller by mck1117 And even in the case of the wideband controller, Bosch's sensor architecture lends itself to a circuit desi...
by mck1117
Sun Jun 04, 2023 7:27 pm
Forum: Dev: Hardware
Topic: ECU accuracy
Replies: 6
Views: 5565

Re: ECU accuracy

The first step is to add correction factors for all important analog inputs: ..... Instead of a sensor, you can connect a voltage generator there and do it with it - it doesn't matter how it's done. How do you propose doing that in production? This is the big reason that OEMs don't want to do 100% ...
by mck1117
Sun Jun 04, 2023 7:24 pm
Forum: Dev: Hardware
Topic: ECU accuracy
Replies: 6
Views: 5565

Re: ECU accuracy

This means that we should be able to correct the readings of these input data so that the readings in the ECU correspond to the real data. And this proves to us that a single correction for everything, for example, vREF for all, is garbage! This is a bold claim to pull out of nowhere on your third ...
by mck1117
Wed May 03, 2023 5:26 am
Forum: Dev: Hardware
Topic: Vibration vibro test
Replies: 14
Views: 23090

Re: Vibration vibro test

Yes, that glue is for vibration resistance. The "vibration problem" of electronics is not something you're likely to be able to find with a sawzall because the frequency isn't high enough. To try and get those caps to fail, you'd have to vibrate at a frequency that excites the mechanical r...
by mck1117
Wed May 03, 2023 5:20 am
Forum: You and your build
Topic: 2014 red kia rio 1.6 GDI M/T busted dreams
Replies: 55
Views: 144224

Re: 2014 red kia rio 1.6 GDI M/T busted dreams

AndreyB wrote:
Wed May 03, 2023 4:13 am
Open question why I am trying to fix it but it's kind of fun and relaxing.
Sometimes regular wrenching is therapeutic. I'm almost looking forward to the eventual timing chain job on our F150.
by mck1117
Mon May 01, 2023 6:05 pm
Forum: You and your build
Topic: BMW e34 M5 S38
Replies: 23
Views: 20046

Re: BMW e34 M5 S38

Here's how I'd do it: - Fully tune the engine with the flap deactivated using the normal VE/ignition tables. - Set up GPPWM to open the flap where you want it (sounds like you have this part figured out). image.png - Set up a VE blend table to make the required VE adjustment for when the flap is ope...
by mck1117
Sun Apr 30, 2023 9:47 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 69
Views: 64681

Re: Discrete components VR decoder with zero firmware code

Also, that edited schematic doesn't actually fix it: The problem is with the clamp diodes, not the opamp inputs. If you delete the diodes the opamps are less protected, but the common mode input range is expanded. Edit: just move the diodes to the inputs of the first opamp, instead of prior to the 1...
by mck1117
Sun Apr 30, 2023 9:25 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

your cam sensor is likely "bosch quick start" pattern
by mck1117
Sun Apr 30, 2023 8:30 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 69
Views: 64681

Re: Discrete components VR decoder with zero firmware code

You can also pull this off by capacitively coupling the sensor inputs, then doing whatever you want with the DC offset.

Ground one pin, ground the other pin, doesn't matter, it'll work.
by mck1117
Fri Apr 28, 2023 11:12 pm
Forum: You and your build
Topic: red 2003 VVT test mule Miata NB2 #27
Replies: 240
Views: 354129

Re: red 2003 VVT test mule Miata NB2 #27

AndreyB wrote:
Fri Apr 28, 2023 10:31 pm
Aaaaaaand SOLD. End of an era!
😲😲😲
by mck1117
Fri Apr 28, 2023 10:22 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

Shared sensors grounds are generally fine, not enough current there to cause an offset.
by mck1117
Fri Apr 28, 2023 10:13 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

ykill wrote:
Fri Apr 28, 2023 10:11 pm
Now that I'm thinking about it, it's grounded on the chassis....
I'll ground it on the ECU
Ah hah, that'll do it! Our input voltage threshold is relatively low (2 volts or something? don't remember exactly), so even a "little bit" of ground offset can trip things up.
by mck1117
Fri Apr 28, 2023 10:06 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

I'd make sure that the ground wire is going to the ECU's sensor ground, and isn't connected to chassis/engine somehow. An easy test is to unplug the connectors from the ECU, then measure ohms between the sensor's ground pin and the block.
by mck1117
Fri Apr 28, 2023 9:20 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

where do the sensor's ground and power wires go?
by mck1117
Thu Apr 27, 2023 9:31 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

Has this crankshaft/sensor combination run an engine before?

I ask because the 24x vs 58x trigger wheels need a different sensor (24x black sensor, 58x grey sensor). If they're mismatched then you'll get a crappy signal or no signal at all.
by mck1117
Thu Apr 27, 2023 8:48 pm
Forum: Tuning Support: Making it Run
Topic: Gen 4 LS - no crank trigger
Replies: 33
Views: 30535

Re: Gen 4 LS - no crank trigger

Proteus has internal pullups on the digital inputs already.

Do you see anything on the trigger logger tab in tunerstudio?
by mck1117
Tue Apr 25, 2023 4:09 am
Forum: You and your build
Topic: 2014 red kia rio 1.6 GDI M/T busted dreams
Replies: 55
Views: 144224

Re: 2014 kia rio 1.6 GDI M/T busted dreams

both the IAT and CLT are the "bosch" presets we have in the firmware
by mck1117
Tue Apr 25, 2023 3:56 am
Forum: You and your build
Topic: 2014 red kia rio 1.6 GDI M/T busted dreams
Replies: 55
Views: 144224

Re: 2014 kia rio 1.6 GDI M/T busted dreams

look at how the gap ratios are 1.0, 2.1, 0.84, 0.54, 1.0

For N-M wheel, gap ratios expected are 1.0, (M + 1), (1 / (M + 1)), 1.0
by mck1117
Tue Apr 25, 2023 3:54 am
Forum: You and your build
Topic: 2014 red kia rio 1.6 GDI M/T busted dreams
Replies: 55
Views: 144224

Re: 2014 kia rio 1.6 GDI M/T busted dreams

it's 60/2 that needs to be inverted (if VR, swap wires)
by mck1117
Thu Apr 13, 2023 3:25 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 69
Views: 64681

Re: Discrete components VR decoder with zero firmware code

https://github.com/andreika-git/hellen-one/wiki/module-vr-discrete now spells current understanding of original schematics There is already a model for the free LTSpice here: https://github.com/mck1117/vr-interface/blob/master/model/VR_Thresholded.asc A few statements in that wiki page are inaccura...
by mck1117
Tue Apr 11, 2023 5:50 pm
Forum: Dev: Software
Topic: Software knock processing
Replies: 66
Views: 59610

Re: Software knock processing

AndreyB wrote:
Tue Apr 11, 2023 2:24 pm
Weird. So log makes it look like we have channel 1 cylinder 1 and 3 and channel 2 cylinder 5 working but crazy steady numbers of cylinders 2,4,6?
wasted spark
by mck1117
Tue Apr 04, 2023 6:44 am
Forum: User Support
Topic: Twincharged BMW M30B32
Replies: 8
Views: 5988

Re: Twincharged BMW M30B32

AndreyB wrote:
Tue Apr 04, 2023 4:13 am
Hardware-wise things are not so interchangeable.
But software wise they are - there are currently zero restrictions about which pins can do what (at least for injection/ignition sort of things). The firmware won't stop you from outputting an injector signal on an ignition channel.