Pax Writer
New Member
Hello experts
I'm trying to build a circuit where I can count the number of times an object pass through a simple photocell. I have attached a picture of the schematic to the post for a quick overview. As the text states, the connection running off to the left goes directly to an active low (or negative edge-trigged) interrupt on a 2051 processor.
This doesn't seem to trigger the interrupt when the light ray is broken. Maybe you have some advice on how to improve the circuit?
I realise that I'm probably hopelessly naive to expect something so simple to work
All comments and help is greatly appreciated.
Thanks.
I'm trying to build a circuit where I can count the number of times an object pass through a simple photocell. I have attached a picture of the schematic to the post for a quick overview. As the text states, the connection running off to the left goes directly to an active low (or negative edge-trigged) interrupt on a 2051 processor.
This doesn't seem to trigger the interrupt when the light ray is broken. Maybe you have some advice on how to improve the circuit?
I realise that I'm probably hopelessly naive to expect something so simple to work
All comments and help is greatly appreciated.
Thanks.