Programable Ignition: View in Oscilloscope

This is the programmable ignition for my Derbi Atlantis.
It was assembled with the program and circuit found here:
http://www.transmic.net/en/1684-v54.htm

As we can see in the video the bottom wave in yellow is the input from the engine. When it goes up, the top square wave ( the output of the ignition) then fires. When the bottom square grows, is because its going slower and takes more time, we can see how the ignition retards the timing for proper running at low revs. when the bottom wave becomes short, its firing more quickly and we can see how the delay from the top blue square wave goes closer to the rise edge of the bottom wave, until they both meet. when they both fire at the same time, the ignition has advanced the maximum. we can see how it moves the ignition from firing right away at the rising of the bottom yellow wave, to delaying it when the wave is long.

The ignition held up to aprox 36~40,000 RPM

Category:

Entertainment

Tags:

• ignition
• programmable
• 16f84
• racing