Help me to complete schematic diagram for ir sensor

[jian999]

I wan to connect this sensor to my arduino board, but i found that there is no output in this circuit diagram (which means cannot connect to analog pin for analog reading).Where should the output put in for analog reading???Thx for helping....

[zhenning]

I wan to connect this sensor to my arduino board, but i found that there is no output in this circuit diagram (which means cannot connect to analog pin for analog reading).Where should the output put in for analog reading???Thx for helping....

If you want analog signal from the circuit, tap from sensor 1 and sensor 2. LM324 acts as comparator between VR1 and Sensor 1 and output to out1, Sensor 2 and VR 2 and output to out2.

[jian999]

dun understand.....can u explain more clearly?

[zhenning]

dun understand.....can u explain more clearly?

LM324 acts as a comparator comparing sensor 1 with vr1. It will only give you either '1' or '0' that is the output from OUT1. It will never give you analog signal. If you need analog signal, tap from sensor1 point.

[gadgetng]

SENSOR1 and SENSOR2 are the analog input. In that case, the LM324 and preset no longer needed.

[robosang]

dun understand.....can u explain more clearly?

Curious to know, what is your background?