automatic room light controller with visitor counter

the transistors are used to drive the common cathode of each 7 segment display,

the displays here are used with multiplexing technique means there is only one display works at a time but it shifts so fast therefor all display works simultaneously

the two LDR's here use for input as active low. means initially it is in high state (1)and it get input by grounding the pins (or 0)
... Read Compelte post
Posted by Ritesh on Sat Jul 14 2007, 02:09 pm

automatic room light controller with visitor counter

plz tell me that which microcontroller is used in the project "automatic room light controller with visitor counter" ?? In the description of the project 89c2051 is mentioned but in the circuit diagram 89S52 is used???????
... Read Compelte post
Posted by isha on Fri Jul 13 2007, 02:31 pm

Downloads

Comments

Robertpag
Wed Nov 30 2022, 03:55 pm
Zijaina
Tue Nov 29 2022, 05:46 am
WilliamTup
Mon Nov 28 2022, 02:22 pm
StanleyAvake
Mon Nov 28 2022, 12:41 am
bvnCar
Sun Nov 27 2022, 10:52 am
Andreasaei
Sun Nov 27 2022, 06:50 am
FrancisCog
Sat Nov 26 2022, 09:48 pm
Irincwb
Tue Nov 22 2022, 03:15 pm