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Search: Posts Made By: apollokid
Forum: aftermarket engine management 06-04-2021, 03:40 AM
Replies: 37
Views: 10,267
Posted By apollokid
Thumb up Bob, congratulations for the progresses...

Thumb up Bob, congratulations for the progresses ;-)
I paused my works after having rebuilt the prototype board, at the moment I'm still waiting for some schottky diodes from aliexpress and since...
Forum: aftermarket engine management 05-09-2021, 05:25 PM
Replies: 37
Views: 10,267
Posted By apollokid
I think is not a problem of be a great C/C++...

I think is not a problem of be a great C/C++ programmer, is to have a deep knowledge of the arduino architecture.
The micros() function relies on an HarwareTimer and HarwareTimers throw a software...
Forum: aftermarket engine management 05-07-2021, 08:01 AM
Replies: 37
Views: 10,267
Posted By apollokid
I'm using an Arduino Mega 2560 but from the...

I'm using an Arduino Mega 2560 but from the manual also the Atmega16U4/32U4 have Schmitt triggers on digital inputs (see chapter 13.2 Ports as General Digital I/O)...
Forum: aftermarket engine management 04-28-2021, 01:14 PM
Replies: 37
Views: 10,267
Posted By apollokid
@bobxyz: When you were talking about...

@bobxyz: When you were talking about PinChangeINTerrupt I was thinking you were meaning about the https://github.com/NicoHood/PinChangeInterrupt library but from your snipplet I've understood that...
Forum: aftermarket engine management 04-25-2021, 07:18 PM
Replies: 37
Views: 10,267
Posted By apollokid
I'm not a skilled C++ coder too, previous time I...

I'm not a skilled C++ coder too, previous time I used it was at university near 25 years ago. I used interrupts to measure times, this is how I read injectors pulse width and is pretty easy:


...
Forum: aftermarket engine management 04-25-2021, 12:14 PM
Replies: 37
Views: 10,267
Posted By apollokid
@Swedbrick: since I had at home a few Schmitt...

@Swedbrick: since I had at home a few Schmitt triggers IC (SN74HC14) I built a quick&dirt circuit for injectors singnal and it works perfectly as expected.
I was shotting to mosquitos with a gun, I...
Forum: aftermarket engine management 04-24-2021, 05:30 PM
Replies: 37
Views: 10,267
Posted By apollokid
Yes, spikes on signals are mainly due to the...

Yes, spikes on signals are mainly due to the cross talk, more a signal has a high impedance and more noise it captures. (That's why O2 is the noisest)
I used resistors much greather than yours...
Forum: aftermarket engine management 04-24-2021, 05:13 AM
Replies: 37
Views: 10,267
Posted By apollokid
Thank you very much 142 guy for your reply. As...

Thank you very much 142 guy for your reply.
As I wrote my knowledge in electronics is limited (I'm not so young, I'm 49 years old and when I get my bachelor degree in informatics I didn't studied...
Forum: aftermarket engine management 04-22-2021, 06:05 PM
Replies: 37
Views: 10,267
Posted By apollokid
Also if I'm a newbie in electronics and I've...

Also if I'm a newbie in electronics and I've never tried to connect my Arduino board directly to the car, I believe that is much better to decouple all signals using optocouplers also if it will...
Forum: aftermarket engine management 04-21-2021, 05:53 PM
Replies: 37
Views: 10,267
Posted By apollokid
For the moment I didn't find flickering problems...

For the moment I didn't find flickering problems with the display but I'm using only 2 interrupt pins to read rpm, injectors pulse and Tq but may be I will need a third interrupt so I will have to...
Forum: performance & modifications 04-21-2021, 05:16 PM
Replies: 28
Views: 8,596
Posted By apollokid
I've opened the new topic as suggested by Bob...

I've opened the new topic as suggested by Bob (And I've seen his interesting reply...)


May be you have hit the target, this could explain also why this unusual voltage of 7.6V
To take a look...
Forum: aftermarket engine management 04-20-2021, 04:41 PM
Replies: 37
Views: 10,267
Posted By apollokid
Arduino LH Jetronic interface: live data + MicroSD logging + ELM327

Hello everyone, my name is Diego and I live in the north of Italy. I recently posted a question in this forum about the reverse engineering of the Tq-signal that the LH Jetronic send to the EZK....
Forum: performance & modifications 04-20-2021, 12:33 PM
Replies: 28
Views: 8,596
Posted By apollokid
Ah, ok Bob, I'm used to name the CEL as MIL ...

Ah, ok Bob, I'm used to name the CEL as MIL
I've read the TP 31397-1 many times and it describes what I wrote in previous post: EZK retards ignition and LH increase the fuel ratio. It also reports a...
Forum: performance & modifications 04-19-2021, 07:48 PM
Replies: 28
Views: 8,596
Posted By apollokid
Thank you esmth for your explanation and your...

Thank you esmth for your explanation and your video. I must tell you that my background on EZK and LH is mainly at a functional level I have never entered so deep in the tuning of the maps.
I'm a...
Forum: performance & modifications 04-18-2021, 02:54 AM
Replies: 28
Views: 8,596
Posted By apollokid
Please forget a part a my last message, I bad...

Please forget a part a my last message, I bad understand that you measured also the Tq an more the first chart plot the correlation between the MAF.
I was misled by the different values between...
Forum: performance & modifications 04-17-2021, 08:05 PM
Replies: 28
Views: 8,596
Posted By apollokid
Great Bob, I'm really happy to see you equipment...

Great Bob, I'm really happy to see you equipment :cheers:
I believe we could have a lot of thing to talk about if we could meet one day :-P

I'm trying to follow you in the correlation between Tq...
Forum: performance & modifications 04-17-2021, 12:27 PM
Replies: 28
Views: 8,596
Posted By apollokid
Thanks Bob ;-) Today I've an idea, I want to...

Thanks Bob ;-)

Today I've an idea, I want to take a measures of both Tq-signal and MAF sensor signal.
I belive that having both Tq and MAF on the same diagram could really help in better...
Forum: performance & modifications 04-17-2021, 02:28 AM
Replies: 28
Views: 8,596
Posted By apollokid
Hello bob, you discovered immediatly I'm not...

Hello bob, you discovered immediatly I'm not english, I'm italian and I live near Milano in the north of Italy.
I know about MegaSquirt and Speeduino, but those require modifications of the car...
Forum: performance & modifications 04-16-2021, 04:08 PM
Replies: 28
Views: 8,596
Posted By apollokid
Hello everyone, this is my first post here on...

Hello everyone, this is my first post here on tbforum. I tried to search for a presentation thread but I didn't find it so I post my question directly.

I'm a software engineer and I'm building an...
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