wanna ask about machine counter

[ilop]

hello , i plan to build a simple man machine counter using microcontroller, if someone who passes that machine, counter increases to one and soon, any idea how i must do first? or any related website?

 

[kieennx]

Hi,
first of all, you should build (or buy) a sensor that has output change when someone pass it. A simple one is an Infrared Sensor with a transmiter and a receiver. The output can be connected to a MCU input directly. You can use a external input of timer to count events.
Best regards,
Kieennx.

 

[ilop]

thank you for your advice, but i am confused how to build it ^^ i don't have any knowledge about sensor, i would be thankful if you have the schematic or website that has the schemactic about your idea

 

[waseem]

Salam!
The simplest sensor to use is the LDR(Light Dependent Resistor). Its resistance changes drastically with light variations(1K - 100K). Make a simple voltage divider to sense this change of resistance.
If you still can't do it then ask me.
Regards.