I am attempting to design a circuit to monitor an electric fence charger. A commercially available test unit with 6 neon bulbs connects to the fence. With each discharge, the neon bulbs blink. Dropping resistors of different resistance indicate voltages from 1000 to 6000 volts. All I am attempting to do is detect which of the 6 are blinking.
I am using this phototransistor, https://www.adafruit.com/product/2831 with a 10k resistor in series with the phototransistor. Using a scope, I can detect a very quick pulse each time the neon bulb blinks. But the pulse is so short, the Arduino doesn't detect it.
What can I do to stretch the length of the pulse so a microcontroller can detect it?
I am using this phototransistor, https://www.adafruit.com/product/2831 with a 10k resistor in series with the phototransistor. Using a scope, I can detect a very quick pulse each time the neon bulb blinks. But the pulse is so short, the Arduino doesn't detect it.
What can I do to stretch the length of the pulse so a microcontroller can detect it?