It is the dark sensor, you can say. it detects the difference of illumination in the shadow & in the normal light and turn its circuit ON & OFF.
it is made by joining many small circuits. each small circuit contains:
1) two LEDs
2) two npn c1383 transistors
3) one resistance of 1K
4) one resistance of 10K
5) one variable resistor 0-20K (to adjust the sensitivity)
6) one LDR
you can see more pics on my "Facebook" account.
that is:
http://www.facebook.com/sabeeh.wasique
link to the photos:
http://www.facebook.com/media/set/?set=a.1154426870071.24288.1509663893
wwhat is your facebook a can use a photodiode ?? i need a circuit using a photodiode you know someone
DouseRock 2 years ago
good job! :)
neurodesign 2 years ago
keep it up bro !
nukhbawasiq 2 years ago
wooww .. SUPER KOOOL bro.. !!
Shehery87 2 years ago