Hello again. Since this is my second instructables, I think that be a little better!
The circuit I describe here, and a simple counter of objects, which contain up to 99 objects (most forward and teach the ability to extend counting).
The circuit is based on three blocks, and the sensor, circuit and display.
Lock the pictures:
Step 1: Take the Parts
The circuit uses few parts, all at low cost. For this project you will need the following pieces:
-1 Infra-red LED
-1 Double red LED display (common katode)
-2 IC CD4026
-1 10K resistor
-2 1k resistor
Step 2: Make Your Counter
So. In the next pictures you have the tracks, of the up side and down side (because you need use de double-face PCB).
I test my project in one protoboard.
And that. Good luck in your assembly and until the next