Hi Dave i have all ready got a program setup that when you press a input button on portA it lights up an led on the output portB.

just need to do some peak and hold in the middle there thats what i am not to shure on.

Hi Melanie in a engine things happen pretty slow compared to electronics the pulse coming out of the Engine managment computer into the Injector driver box. When the engine is idling the ECU output is 1ms earth pulse and when the engines at 8000rpm it has a 8ms earth pulse, The milli second time is how long the injector is open for.


Melanie i am very keen about you idea or using discrete logic components for nanosecond timing. Could you maybe point me in the right direction with a diagram o somthing? that would be much apreaciated

Thank you

Mark