The document provides step-by-step instructions for creating a light sensor circuit using a 555 timer IC, including specific connections for resistors, LDR, potentiometer, and an LED. It details the placement of components on a breadboard with precise pin connections to ensure proper functionality. The circuit is powered once all components are connected, with a reference to a video for additional information.

1. Instructions For Making a
LIGHT SENSOR CIRCUIT

2. Place 555 Timer IC on the Breadboard

3. These are the Pin-Outs of 555 Timer IC, with respect to the
Notch
1234
8765
NOTCH

4. Connect Pin-8 of the IC to Positive Rail

5. Connect Pin-1 of the IC to Negative-Rail

6. Now Connect Pin-2 & Pin-6 of the IC

7. Place a 10K Resistor on Breadoard such that one of its Terminals
is Connected to Pin-2 of 555 timer IC

8. Connect the Other Terminal of 10K Resistor to Negative-Rail

9. Place Another 10K Resistor such that one of its Terminals is
Connected to Pin-6 of 555 timer IC

10. Connect the Other Terminal of 10K Resistor to Positive-Rail

11. Now Place an LDR on Breadboard such that one of its Terminals is
Connected to Pin-4 of 555 Timer IC

12. Connect the Other Terminal of LDR to Positive-Rail

13. Place a 4.7K Resistor on the Breadboard such that one of its
Terminals is Connected to Pin-4 of 555 Timer IC

14. Place a 100K Potentiometer such that one of its Extereme
Terminals is Connected to the Other Terminal of 4.7K Resistor

15. Now Connect the Center Terminal of 100K Resistor to Negative-
Rail

16. Place an LED on the Breadboard ..

17. .. and Connect its Anode to Pin-3 of 555 Timer IC

18. Now Connect a 330R Resistor Between Cathode of the LED and
Negative-Rail

19. Connect the Power Supply.. and the Circuit is Now Ready!
Video + More Info in the Description Below