VOTE NOW!
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Design 1/4
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Usability 2/4
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Creativity 3/4
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Content 4/4

This is a circuit which activates a RELAY when the envoiroment is dark and when there is a movement in front of it (PIR sensor).  All you need to do is solder the components and connect an LED bulb(220v) through the relay.


note : 


This circuit can work both with AC and DC power supply . just make sure if it's AC current, it should be from 12v - 9v. And if it's DC current, please make sure to turn ON the switch on the PCB and suppluy a 12v - 9v to it. 


Warning : 


please make sure NOT to supply both AC currrent and DC current together. And the 5k potentiometer is just there to controll the DC current only


components :


3v LED's (3) , Dip switch , 1N4007 diode (4) , BC547 transistor (3) , 100uF capacitor , 1000uF capacitor(2) , SPDT relay(2) , 3 pin screw header , LM317 ic , 5k Poteniometer , 0.33 uF ceramic capacitor , LDR , PIR sensor , DC or AC (12v - 9v) power supply . 


The components which has a bracket (x) next to it shows how many of them you need.


Feel free to ask any questions about this PCB in the comment section and please LIKE !


Thank you :)

Mar 07,2019
455 viewsReport item
  • Comments(4)
  • Likes(3)
You can only upload 1 files in total. Each file cannot exceed 2MB. Supports JPG, JPEG, GIF, PNG, BMP
    View More
    VOTING 2 votes
    • Sergio from SPAIN
      • 10
        design
      • 10
        usability
      • 10
        creativity
      • 10
        content
      10.00
    • umar_khalid from SRI LANKA
      i love PCBs
      • 10
        design
      • 9
        usability
      • 10
        creativity
      • 10
        content
      9.75
    View More