Search found 3714 matches

by kb1gtt
Tue Apr 20, 2021 9:10 pm
Forum: Dev: Software
Topic: ECU high-level programming
Replies: 9
Views: 178

Re: ECU high-level programming

If we integrate into scratch, we could potentially attract many kids they would work for free.
https://scratch.mit.edu/

Scratch is a fairly decent graphical / easy to use programming environment. It might not be that far fetch of an idea to use as a higher level programming environment.
by kb1gtt
Tue Apr 20, 2021 11:37 am
Forum: Dev: Software
Topic: ECU high-level programming
Replies: 9
Views: 178

Re: ECU high-level programming

Most OEMs have tools which allow then to specify high level stuff. They spec number of cyls, injector flow rates, etc. The tool then splices together the code they need to operate the engine. I recall Freescale has one that can be downloaded for free.
by kb1gtt
Tue Apr 20, 2021 11:31 am
Forum: You and your build
Topic: Golf Mk2 Rust bucket with 1.8T 20V engine swap
Replies: 4
Views: 156

Re: Golf Mk2 Rust bucket with 1.8T 20V engine swap

I would like to suggest using a real harness connector then make an adapter for db15 db37. Those db connectors have problems relative to automotive applications.
by kb1gtt
Wed Feb 24, 2021 12:53 am
Forum: Dev: Software
Topic: Fw. improvement - PANIC BUTTON
Replies: 15
Views: 873

Re: Fw. improvement - PANIC BUTTON

I think there is a third inquiry / request. A push button to highlight stuff in the log.
by kb1gtt
Wed Feb 24, 2021 12:12 am
Forum: Dev: Software
Topic: Fw. improvement - PANIC BUTTON
Replies: 15
Views: 873

Re: Fw. improvement - PANIC BUTTON

2. Hit button - Panic/shutdown. Something like this is required on monster trucks that are preforming a show. The kill switch is controlled by any one of three people. If the driver gets knocked out any one of the staff members can press the button and kill the engine before the truck makes it to t...
by kb1gtt
Wed Feb 17, 2021 11:38 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

This rough simulation includes a pinch of noise.
by kb1gtt
Wed Feb 17, 2021 10:59 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

I found the very rough VR simulation. Of course a better wave form can be obtained if you add more data points to the PWL.
by kb1gtt
Wed Feb 17, 2021 10:31 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

Some comments -- Yes you can talk other ECU's here, even MS. However please do it in an "on topic" forum post. Is your ECU open source, can you share, several of us like to see other approaches. -- If you tune with a set phase shift, do you really care about the phase shift? I think your t...
by kb1gtt
Wed Feb 03, 2021 11:47 pm
Forum: Dev: Hardware
Topic: PNP ECU for Vw/Audi ME7 #51
Replies: 152
Views: 26211

Re: PNP ECU for Vw/Audi ME7 #51

Calibrate your temp sensor? Your question is vague.
by kb1gtt
Fri Jan 29, 2021 9:36 pm
Forum: Dev: Software
Topic: [solved] microRusEFI shows CPU Temperature Error with Firmware newer than 2020 Sausage Pizza Day (11.10.2020)
Replies: 26
Views: 1414

Re: microRusEFI shows CPU Temperature Error with Firmware newer than 2020 Sausage Pizza Day (11.10.2020)

After the op-amp with a 5V input, you should see something more like 2.5V. Can you measure AV5 at the stm32 pin? What voltage do you get there?
by kb1gtt
Mon Jan 11, 2021 10:00 pm
Forum: You and your build
Topic: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L
Replies: 5
Views: 428

Re: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L

He asks if mine runs..... It probably would have a couple years ago. It's just a VIN to me. A project some day, and it has the little bits which I can transfer over. Things like tail lights, fiberglass top, windshield, etc. For now it's just yard art. I plan a tube frame, new tub, etc. I do not know...
by kb1gtt
Mon Jan 11, 2021 2:52 am
Forum: You and your build
Topic: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L
Replies: 5
Views: 428

Re: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L

I have a 1995 YJ, 4cyl which I bought for the VIN. Do you have any suggestions? I dream of making it a direct injection diesel, with tube frame and new tub. What are your dreams for yours?

Is your mostly stock?
by kb1gtt
Sat Jan 02, 2021 12:32 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

PWM / DAC should be before the opamp.
by kb1gtt
Sat Jan 02, 2021 11:47 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

Perhaps vref source could be optional PWM / DAC input? I know the goal is no firmware, but having a software adjustable threshold is likely a desirable feature. These PWM / DAC are handy as you can PWM digitally or if you have a DAC you can just DAC the thing. This would allow for an adjustable thre...
by kb1gtt
Thu Dec 31, 2020 10:52 am
Forum: Misc
Topic: Handy tool(s)
Replies: 0
Views: 1242

Handy tool(s)

by kb1gtt
Mon Dec 28, 2020 5:47 pm
Forum: Dev: Software
Topic: Limp Home and Engine Protection
Replies: 18
Views: 1598

Re: Limp Home and Engine Protection

I guess error check the temperature profile and trigger an error. Aka if engine is not warm after 10 minutes then limit power. Frozen block, loss of coolant, broken sensor can cause bad temp readings. Limit power to limit the damage. I guess the same for a stuck thermostat. Wrong profile could cause...
by kb1gtt
Sun Dec 27, 2020 11:55 pm
Forum: Dev: Software
Topic: Limp Home and Engine Protection
Replies: 18
Views: 1598

Re: Limp Home and Engine Protection

Hmmmm if etb claims 0% yet MAF = WOT then limit fuel to 10% or ignore high sensor and only use lower power sensor or do something like that.
by kb1gtt
Sun Dec 27, 2020 2:11 am
Forum: Dev: Hardware
Topic: Hina, Lowcost ECU
Replies: 6
Views: 726

Re: Hina, Lowcost ECU

DB37 = evil.

How much lower cost is this than a TLE8888? I see thru hole, so that's expensive. STM32 with TLE8888 is about all you need, and it's reasonably low cost.
by kb1gtt
Sun Dec 27, 2020 2:08 am
Forum: Misc
Topic: KICAD
Replies: 34
Views: 13100

Re: KICAD

Here are some notes about how I merged two kicad projects (both schematics and PCB) in KC5. -- Copy one project as a startting point, AKA PT2000 --> TestMergeProject -- Delete extra files, .csv, gerbers, .net, etc. Modify files like knownissues.txt -- Rename core files AKA Common_Rail_PT2000.XXX -->...
by kb1gtt
Sat Dec 26, 2020 10:35 pm
Forum: Dev: Software
Topic: Limp Home and Engine Protection
Replies: 18
Views: 1598

Re: Limp Home and Engine Protection

-- If rpm rate of change is bad 5krpm to 0rpm in one rotation then cut fuel pump. -- if over temp then limit hp or do something to protect the engine -- if speed density sensor failure, then switch to alpha-n or average two fuel algos or something like that. -- if unreasonably air temp then ??? -- i...
by kb1gtt
Thu Dec 17, 2020 11:07 am
Forum: Dev: Hardware
Topic: VR emulator for board soldering validation
Replies: 11
Views: 989

Re: VR emulator

by kb1gtt
Thu Dec 17, 2020 11:03 am
Forum: Dev: Hardware
Topic: VR emulator for board soldering validation
Replies: 11
Views: 989

Re: VR emulator

How about 36 dip switches connected to a shift register so you can emulate a 36-1 wheel? 100% hardware and emulates a common crank pattern.
by kb1gtt
Thu Dec 17, 2020 3:33 am
Forum: Dev: Hardware
Topic: VR emulator for board soldering validation
Replies: 11
Views: 989

Re: VR emulator

Doesn't the discovery have a headphone jack?
by kb1gtt
Sat Dec 12, 2020 1:15 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

This is where it used to be, see the history on this page, it has a honeywell app note, spreadsheet, and many details about VR's.
https://rusefi.com/wiki/index.php?title=Manual:Hardware_Trigger&oldid=2806#VR_lower_level_details.2C_formulas.2C_app_notes.2C_etc
by kb1gtt
Sat Dec 12, 2020 1:13 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

How do you search the new wiki for content? I know there was a honeywell app note and spreadsheet that was on the old wiki, it also detailed many specs of the typical VR sensor. I used to search the old forum for "300V VR" but that does not work any more. How do I find it on the new wiki?
by kb1gtt
Sat Dec 05, 2020 10:43 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

Pictures can be uploaded to the rusefi forum. You do not need the external service to host the pictures.
by kb1gtt
Tue Dec 01, 2020 3:03 am
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

Do you have a simulation for this? I'm not fully following how parts of it work. I'm concerned that it would be weak against common mode noise. Can it be adjusted to use the opamp as a differential input?
by kb1gtt
Mon Nov 30, 2020 7:21 pm
Forum: Dev: Hardware
Topic: Discrete components VR decoder with zero firmware code
Replies: 54
Views: 4789

Re: Discrete components VR decoder with zero firmware code

Would dedicated STM32 that is independent of rusEFI firmware an OK solution, or does that also cross the no firmware solution? AKA dedicated chip, instead of integrated solution.
by kb1gtt
Mon Nov 30, 2020 10:34 am
Forum: Misc
Topic: JLC better parts search
Replies: 3
Views: 722

JLC better parts search

This is an article about a tool that helps with searching JLC parts. https://hackaday.com/2020/10/11/improved-part-searches-for-jlcpcb-parts/ The general process is that you browse to the below page, you click the update in the top, then wait for a while to download and update and add the components...