Search found 3762 matches
- Fri Jan 29, 2021 9:42 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: 18384
Re: microRusEFI shows CPU Temperature Error with Firmware newer than 2020 Sausage Pizza Day (11.10.2020)
Ah, the JP1 thing. Yeah we got ride of that after some testing.
- 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: 18384
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?
- Mon Jan 11, 2021 10:00 pm
- Forum: You and your build
- Topic: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L
- Replies: 5
- Views: 4379
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...
- Mon Jan 11, 2021 2:52 am
- Forum: You and your build
- Topic: 1987 Jeep YJ - Wrangler - i6 amc258 4.2L
- Replies: 5
- Views: 4379
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?
Is your mostly stock?
- Sat Jan 02, 2021 12:32 pm
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
Re: Discrete components VR decoder with zero firmware code
PWM / DAC should be before the opamp.
- Sat Jan 02, 2021 11:47 am
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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...
- Thu Dec 31, 2020 10:52 am
- Forum: Misc
- Topic: Handy tool(s)
- Replies: 0
- Views: 9060
Handy tool(s)
LCR tweezers are handy
https://www.seeedstudio.com/Mini-Digital-Tweezers-DT71-p-4696.html
https://www.seeedstudio.com/Mini-Digital-Tweezers-DT71-p-4696.html
- Mon Dec 28, 2020 5:47 pm
- Forum: Dev: Software
- Topic: Limp Home and Engine Protection
- Replies: 18
- Views: 27161
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...
- Sun Dec 27, 2020 11:55 pm
- Forum: Dev: Software
- Topic: Limp Home and Engine Protection
- Replies: 18
- Views: 27161
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.
- Sun Dec 27, 2020 2:11 am
- Forum: Dev: Hardware
- Topic: Hina, Lowcost ECU
- Replies: 6
- Views: 6059
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.
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.
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 -->...
- Sat Dec 26, 2020 10:35 pm
- Forum: Dev: Software
- Topic: Limp Home and Engine Protection
- Replies: 18
- Views: 27161
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...
- Thu Dec 17, 2020 11:07 am
- Forum: Dev: Hardware
- Topic: VR emulator for board soldering validation
- Replies: 13
- Views: 9149
Re: VR emulator
Looks like jlc has shift registers.
https://jlcpcb.com/parts/componentSearch?searchTxt=Shift%20Registers
https://jlcpcb.com/parts/componentSearch?searchTxt=Shift%20Registers
- Thu Dec 17, 2020 11:03 am
- Forum: Dev: Hardware
- Topic: VR emulator for board soldering validation
- Replies: 13
- Views: 9149
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.
- Thu Dec 17, 2020 3:33 am
- Forum: Dev: Hardware
- Topic: VR emulator for board soldering validation
- Replies: 13
- Views: 9149
Re: VR emulator
Doesn't the discovery have a headphone jack?
- Sat Dec 12, 2020 1:15 pm
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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
https://rusefi.com/wiki/index.php?title=Manual:Hardware_Trigger&oldid=2806#VR_lower_level_details.2C_formulas.2C_app_notes.2C_etc
- Sat Dec 12, 2020 1:13 pm
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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?
- Sat Dec 05, 2020 10:43 am
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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.
- Tue Dec 01, 2020 3:03 am
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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?
- Mon Nov 30, 2020 7:21 pm
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
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.
- Mon Nov 30, 2020 10:34 am
- Forum: Misc
- Topic: JLC better parts search
- Replies: 3
- Views: 4545
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...
- Mon Nov 30, 2020 4:19 am
- Forum: Dev: Hardware
- Topic: Discrete components VR decoder with zero firmware code
- Replies: 69
- Views: 71559
- Mon Nov 30, 2020 4:14 am
- Forum: You and your build
- Topic: 1998 BMW V12 engine M73 #55
- Replies: 144
- Views: 131792
Re: 1998 BMW V12 engine M73 #55
These are snippets found in the below link. Of course if they said it on the internet, it must be true. https://www.theglobeandmail.com/globe-drive/culture/commentary/the-problem-with-ethanol-in-gasoline/article29103634/ Because it is an alcohol, ethanol dries out the rubber components in a fuel sys...
- Fri Nov 27, 2020 10:35 pm
- Forum: Dev: Hardware
- Topic: EFI for small engines
- Replies: 118
- Views: 112179
Re: EFI for small engines
The MRE is very small as is. The TLE8888 chip is fairly small. Sure we could save some space with different less capable chips, but not very much. Perhaps the size of your thumb nail. Why is MRE to large? My lawn mower and snow blower wheel's are not going to buckle under the weight of MRE. Perhaps ...
- Wed Nov 25, 2020 7:54 pm
- Forum: You and your build
- Topic: 2006 Volkswagen Passat 2.0 Turbo GDI test mule #64
- Replies: 181
- Views: 566971
Re: 2006 Volkswagen Passat 2.0 Turbo GDI test mule
Hmmm, 3.3 may also be a concern. I would suggest changing to all 2.2 if you can stomach it.
- Mon Nov 16, 2020 10:38 am
- Forum: You and your build
- Topic: 2006 Volkswagen Passat 2.0 Turbo GDI test mule #64
- Replies: 181
- Views: 566971
Re: 2006 Volkswagen Passat 2.0 Turbo GDI test mule
While your at it I suggest changing the oil prosper switch. It's cheap and a bigger to change. I also understand the injectors will be stuck. You might want to consider just breaking then all out and replace them. I understand even with the head off they are difficult to get out.
- Sun Nov 15, 2020 9:17 pm
- Forum: You and your build
- Topic: FrankenFerrari - V12 Ferrari 308
- Replies: 198
- Views: 173418
Re: FrankenFerrari - V12 Ferrari 308
Perhaps put a 5.6V Zener or similar voltage limiter on the output of U14. Perhaps something like this. I have not check the watts, so I'm not sure this 1W would be OK, but something like this could be added to clamp the voltage.
https://octopart.com/1n4734a-on+semiconductor-1310081
https://octopart.com/1n4734a-on+semiconductor-1310081
- Sun Nov 15, 2020 8:16 pm
- Forum: You and your build
- Topic: FrankenFerrari - V12 Ferrari 308
- Replies: 198
- Views: 173418
Re: FrankenFerrari - V12 Ferrari 308
In Figure 3 of the below PDF, it notes with +/-5V (a 10V swing) you only get 6V range, so I expect you loose about 2V on the low side and about 2V on the high side. The range is often not exactly centered, in your case it appears yours is 1.5V from the bottom rail. https://www.st.com/resource/en/dat...
- Tue Nov 10, 2020 10:35 am
- Forum: You and your build
- Topic: 1998 BMW V12 engine M73 #55
- Replies: 144
- Views: 131792
Re: 1998 BMW V12 engine M73 #55
Grinder seems like a good plan
- Fri Nov 06, 2020 9:57 pm
- Forum: You and your build
- Topic: 2006 Volkswagen Passat 2.0 Turbo GDI test mule #64
- Replies: 181
- Views: 566971
Re: 2006 Volkswagen Passat 2.0 Turbo GDI test mule
Yeah, the old push before you pull, that's huge with those connectors. I often give a dab of WD40 to help break them free on the push.