Automatic night light using 555 and relay

Automatic night light using 555 and relay

Automatic night light using 555 and relay

This Automatic night light using 555 IC turns lights on when there is no daylight. The circuit is perfect for lighting single places such as the garden, the front door of the house, the entrance to the garage, etc. 

  •  
    128
    Shares
  • 128
  •  
  •  
  •  
  •  
  •  
  •  
Darkness detector circuit with audio output using 555

Darkness detector circuit with audio output using 555

This darkness detector circuit beeps when the light drops below a certain level.

The main elements of this circuit are the 555 integrated circuit, working as an astable multivibrator and an LDR which is used as darkness sensor.

  •  
    128
    Shares
  • 128
  •  
  •  
  •  
  •  
  •  
  •  
Electronic Doorbell Circuit using a 555 and CD4017

Electronic Doorbell Circuit using a 555 and CD4017

Electronic Doorbell Circuit using a 555 timer and a CD4017 decade counter

This electronic doorbell circuit gives us all the possibility to change the tone of each of the 10 musical notes that the circuit can have. This means we can create our own sound sequence.

  •  
    128
    Shares
  • 128
  •  
  •  
  •  
  •  
  •  
  •