rusefi.com

I note that you say "custom board (hardware)" not "custom ECU (hardware+firmware)". I agree that have to make some changes to the firmware is a unwanted step. The ASIC problem is very complex. Even the simplest IC such as a MAX9924/25 can be seen as a ASIC. TLE9201 is a awesome ...

I see the question come up now and then "Why do you make your own board when we have X or Y"? I'll try to explain MY take on the matter. First and foremost I enjoy making my own boards, CAD, designing, routing is something I love. Anyway here are some point that I see beneficial to make my...

Two stroke

I'm having some trouble with my flexfuel sensor. It reads the etanol content just fine but the temperature gives me headache. The signal from the sensor needs a pullup resistor and after that the signal looks like this: fuelTemp.jpg But the signal needs to look like this for temp reading to work. fu...

I took the Volvo out for a short spinn today. Mostly for testing the Tractioncontrol. The rearwheels is on auxSpeed1 and front/right is on vehiclespeed (VSS). Here are some logs: This one is with the auxSpeedMultiplier set to 0 https://rusefi.com/online/view.php?log=1354 Next one is set to 2 https:/...

Why do you have it set to false?

Yes it's a 2x24 enclosure and the Superseal don't fit in that case, some butchering is needed


Sure I can put the code up on github but it's very specific to my car, and I'm sending the can-data via LUA.
--
https://github.com/zed65/ESP32display

I hacked together a display to go in my instrument cluster.
A ESP32 with CAN-Bus and a round gc9a01 display.

You should not have a red error Trigger ERROR on the dashboard.
Cranking RPM is what it says: This sets the RPM limit below which the ECU will use cranking fuel and ignition logic.
And that is when to switch from:

Something is weird with your trigger setup, you have selected 36/1 but have total count to 32?
You have CUSTOM_PRIMARY_TOO_MANY_TEETH = 9002, error
and CUSTOM_OUT_OF_ORDER_COIL = 9012.

https://github.com/rusefi/rusefi/blob/master/firmware/controllers/algo/obd_error_codes.h

mck1117 wrote: ↑

Wed Feb 14, 2024 1:11 am

Fix whatever is going on causing VE to need to be so high.

Just for clarity, on boosted application VE-value can be much higher than 127.

Dron_Gus wrote: ↑

Wed Feb 07, 2024 7:01 am

Ok. Let me know if you have some troubles with LIS.

I have some problem with LIS, see https://github.com/rusefi/rusefi/issues/5928

cpipkin6.5x55 wrote: ↑

Wed Feb 07, 2024 4:04 am

and cruse control.

How does the cruise control work? Electronic throttle body?

Note to myself, this is my current pin-out to the ECU

I've not tested LIS2D yet, I'm waiting on my latest board for that. But if I understand it correct it 'should' work.
Where are you located? Maybe I can send one of my spares to you with a bung and everything.

A K-Type, I can take a picture if you want. Does it have pn? I mean I have a lot of different noname sensors from eBay and Aliexpress. But if you know some good quality OEM sensor - I'd better spend some $ buying it. Ahh I understand, the once I have comes from the development side of a big Swedish...

Dron_Gus wrote: ↑

Mon Feb 05, 2024 8:38 am

@zed65 what type of EGT sensor are you using?

A K-Type, I can take a picture if you want.

Yea, I know I know

I've investigated some more in my flexfuel-sensor problem, can't find any. Thing is that when the engine stalls (0 rpm) I get a nice clean signal but not when the engine runs. https://rusefi.com/online/view.php?log=1343 I don't want to bring my oscilloscope to the car but I guess I don't have any ch...

I understand, no problem.
One small problem I discovered is that every time I hit "Burn" the auxSpeed goes to zero and stays there.
After a reboot it's back again.

One other thing, can you revert back the changes made to the LUA problem https://github.com/rusefi/rusefi/issues/5889
The EGT worked for me before that but not now.

Can we use the "raw" VSS pulses to calculate with?
Now when VSS is 72km/h the auxSpeed neds to be at 72Hz to get slipratio 1
Or even better (but more work) to have a proper dialog for auxSpeed's with pulses per km and so on.

Can we/you make a change to the firmware to allow for use of the already existing VSS sensor?
That way we save a VR-input and less wires to be added in the car.

Bench test seems to work https://rusefi.com/online/view.php?log=1338

Nice!, I'll do some testing.
One problem might be that I don't think my car have the same number of pulses front/rear but I'll have to check.

You don't need to add analog MEMS into firmware.
But as SPI-MEMS is broken I've temporary done this hack

AndreyB wrote: ↑

Thu Feb 01, 2024 4:27 pm

"Fuel Temperature" is supposed to be there?

ithardwheneverythingispiledtogetherbutstructuremakesiteasierpleasecreateseparateticketsunlesyou see existing tickets?

My bad, the temp is working.

3. MEMS/Accelerometer, as of now I've connected a ADXL-335 to rawAnalogInput1 but it would be nice to have a more dedicated thing. I do not get it. What's the idea? Feed three analog signals from external MEMS? Let's please not do that. Let's either use a board with a supported SPI MEMS or let's us...

I'll give https://rusefi.com/online/ a try.

I took the Volvo for a short test run today. Here is a cold-start-log from 15C to 40C (I haven't barely touched the tune). cold2.zip Here are a log when driving, really need to give her some more fuel :D testdrive2.zip Now to the features/problems I have discovered. 1. Flexfuel still don't work as i...