Ghostchips

Does anyone here know how a 'coil on plug' can sense when a spark has occurred & use that sensor wire thing?

7 minutes ago, kiwi808 said:

It belongs to Amy aka @rotorhoe

Tell her i said hi.

Hang on a minute, that pink wheeled one might be piloted by someone i know.

Could someone tell me why this

  if (analogRead(inPin) <= sensorThreshold)
  {
      if (coilState == LOW && coilPin == LOW) {
      coilState = HIGH;
      coilPin = HIGH;
      digitalWrite(outPin, !(digitalRead(outPin)));
      previousMicros = currentMicros;
     }
    if (coilState == HIGH && coilPin == HIGH && currentMicros - previousMicros >= coilCharge)
     {
      digitalWrite(outPin, LOW);
      coilPin = LOW;
      previousMicros = currentMicros;
     }
    if (coilState == HIGH && coilPin == LOW && currentMicros - previousMicros >= dwell)
    {
      previousMicros = currentMicros;
      coilState = LOW;
      coilPin = LOW;
    }
  }
  else
  {
    digitalWrite(outPin, LOW);
  }

Runs way slower (as in, ignition retarded with the sensors and engine speed the same) and noticeably less smooth than....

This?

  if (analogRead(inPin) <= sensorThreshold)
  {
    digitalWrite(outPin, !(digitalRead(outPin)));
    delay(2);
    digitalWrite(outPin, LOW);
    delay(10);
  }
  else
  {
    digitalWrite(outPin, LOW);
  }
}

If i have a command to run 'void taskname' in the loop, and the 'void taskname' points to another 'void taskname2' or something, will this run?  I seem to be doing something wrong.

https://www.aliexpress.com/item/32885750557.html
Been using that on an exhaust.

20 hours ago, HighLUX said:

Yeah just need Temp gauge, small digital readout would be fine.

Thermocouple off Ali might work if you could find one that runs to the right range?

 

Those $5 ones work for me. K-type with reader, 0-800 degrees.

Picture-less update.

While i will still need to dial in the auto-advance curve (the orig' relied on a combination of moving a lever to a basic range, and the magnets on the flywheel ramping up the speed of the points opening) it has a notable improvement in fuel economy, partly due to being able to wind the fuel mixture screw in 1/16th of a turn & have the same performance.
It's like having the magneto set perfectly.  But requires a battery.

8 hours ago, Ned said:

You planning on designing a custom PCB for that now that you have a working solution? Looks bloody great

I wasn't, but it is possible.

6 hours ago, IvyMike said:

Congrats. How did you sort the ignition drivers in the end?

Cheated with opticouple chips to isolate the aruduino from the unbelievably noisy stock system.

1 hour ago, SOHC said:

Have you put that video on Ford Barn yet? 

Sure... i doubt they'll look though.  I should have posted it to the other forum just to get their knickers in a twist.  So easy.

https://youtu.be/onQO9h5A83M

Finally.
Feels weird driving a car that used to have buzzing points.  Now it only has this digital thing running the show.
Torn between continuing the coil on plug thing or coding some decent ignition timing for it.

On 21/09/2019 at 13:33, morkster said:

In my mid to late teens (25 yrs ago) i used to dream over this thing.. it still had a roof over it back then and was definitely savable.. however lack of cover has nailed it..

Flathead v8

I'd still attempt it.

If it's LED1 you're trying to connect to, that LDR idea i had might be easiest.  Looks like connecting things to the LED makes that flasher circuit go nuts.
I only know that because i built that flasher a a kid, the rest of the circuit is a bit above my pay grade.

8 hours ago, flyingbrick said:

Dewalt battery charger. 150 to 200 bucks to buy outside of a kit but has 1% of the functionality of my cheap multifunction Ali express charger. 

The main thing i miss is a buzzer to say it's finished- i charge quite a few packs at night so it would be nice.

Currently an LED flashes when charging and lights solid when complete. I planned to use simple switch debounce code and arduino to sound a buzzer when the led stops flashing.

I stripped charger and wanted to check voltage of led during the charge cycle..but even touching one multimeter probe to one of the LED solder pads upsets its flash cycle- and at that stage i decided to re-assemble before i broke something.

Does anyone have any idea what could cause this? Must be extremely sensitive circuitry!!

Opticouple. Contains an LED.  It might not might one being conected.

Or put a photo-resister over the LED.  I've done things like that but the calibration is hard to maintain. Phototransistor might work better.

7 minutes ago, SOHC said:

Do you think you have made a successful ignition system? I have noticed everyone on fordbarn is ignoring me now, 

I have successfully made something that gives me 4 times as many shocks as a single ignition coil.  Those sad old squares ignore me too.

Video of it almost running.  Cannot seem to get the mixture quite right.

A guy i know fills them with soapy water for an hour or 2 & drains it.  Soap binds the gas like it's an oil.

The chrome on the bumpers counts for something.

Do you mean "Which one would you rather afford to daily?", on my current income it'd be the civic.

I think i saw a bandsaw in there.

If you were local you could have my 2stroke Tecumseh.