I think kb1gtt would be the right one to answer this?
Kb1gtt is away from the computer right now. Please leave a message at the beep.
While I only have a cell phone for the next week, I got to see the red board. I'll try to post better in a week.
Re: PNP ECU for Vw/Audi ME7
Posted: Sat Apr 20, 2019 10:41 pm
by 960
Well, turns out the 20mA ignition drivers in the TLE8888 cant drive the VAG-Coils.
It just shuts down.
Any suggestions for Ignition-Drivers?
They also trigger when going high, not low.
Re: PNP ECU for Vw/Audi ME7
Posted: Sat Apr 20, 2019 10:47 pm
by AndreyB
are you looking for external for a mock up or internal for next PCB revision? what about same as on Frankenso? Can you piggyback Frankenso as a temporary solution?
are you looking for external for a mock up or internal for next PCB revision? what about same as on Frankenso? Can you piggyback Frankenso as a temporary solution?
I am looking for a internal solution for next revision.
I would prefer one IC, but TC4427 might be the best solution?
Will try to wire up something temporary
Re: PNP ECU for Vw/Audi ME7
Posted: Sat Apr 20, 2019 11:51 pm
by 960
I usually use these small proto-boards for such.
I just glue it to the red board, to do some hacks
DSC_0215.JPG (1.06 MiB) Viewed 15729 times
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 12:50 am
by kb1gtt
If you get it to work with the 4427 take some measurements and let us know amps and volts. It would be difficult to make a suggestion when I do not know the load. Also if you post the amps I can check for thermal issues.
If you get it to work with the 4427 take some measurements and let us know amps and volts. It would be difficult to make a suggestion when I do not know the load. Also if you post the amps I can check for thermal issues.
The coils are TTL, with 390 Ohms.
I found others use them with the 4427.
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 11:47 am
by Dron_Gus
If 12V is ok for coil drivers, you can use OUT21..24 PP outputs of 8888.
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 12:33 pm
by 960
Just made a addon-board for the coils.
The coils fire fine at bench, so ready for a new vehicle-test.
The design looks so good, I think maybe I'll keep it like this in the next revision
Coil_Addon.jpg (1.58 MiB) Viewed 15705 times
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 1:01 pm
by AndreyB
what is this proto board called? I need a couple just in case
i would expect inverted TPS to work same as not inverted, just inverted calibration?
It did not work any way. I calibrated the other way, so it showed right.
But it always "climbed" towards 100% when holding pedal in any position.
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 2:17 pm
by AndreyB
I am sorry, but you are not good at transferring ideas in written form. You did not specify the subject of "not working", you did not specify your criteria of working/not working.
I am not enjoying this guessing game. I am investing my time in answering questions, please invest time into reading some links at https://rusefi.com/s/questions
I know this is a bit harsh, but I value my time and we need to compromise to be more efficient.
Re: PNP ECU for Vw/Audi ME7
Posted: Sun Apr 21, 2019 2:24 pm
by AndreyB
Ola, can you please help me wire TPS analog signal into one of the red boards? Is there a 3.3 v test point for me to use as TPS sensor power? Can you draw on a picture of the board showing signal input and which pads to jump to simply feed 3 volts TPS directly into stm32?
I am sorry, but you are not good at transferring ideas in written form. You did not specify the subject of "not working", you did not specify your criteria of working/not working.
I am not enjoying this guessing game. I am investing my time in answering questions, please invest time into reading some links at https://rusefi.com/s/questions
I know this is a bit harsh, but I value my time and we need to compromise to be more efficient.
I know, but this is not an issue, as I just had the wrong channel selected.
When calibrating TPS with wrong channel, I had like around 1000 closed and 100 fully open.
Then it showed right at the TPS gauge.
When pressing the pedal fully down(or fully closed), it seemed right at TPS gauge.
But by pressing the pedal to anything between, and holding it still, the TPS gauge always started moving slowly towards 100%.
Ola, can you please help me wire TPS analog signal into one of the red boards? Is there a 3.3 v test point for me to use as TPS sensor power? Can you draw on a picture of the board showing signal input and which pads to jump to simply feed 3 volts TPS directly into stm32?
For 3.3V output, just put a wire to first pin at swd.
Pads are at the back CU, see attachment. Just solder wires to the pads Anout1, anout2, anout5 and anout12.
analogs_kicad.jpg (672.57 KiB) Viewed 15669 times
Re: PNP ECU for Vw/Audi ME7 #51
Posted: Sun Apr 21, 2019 4:10 pm
by 960
Have you looked any more into the analog inputs @?