KIT INCLUDES

• Led
  
  • Red led -2
  • Green led -2
  • White led -2
  • Yellow led -2
• Single stand wire 2mt – 1
• Resistor
  
  • 1k -3
  • 470ohm -2
  • 2.2k -2
• Breadboard 400 points – 1
• 9v battery -1
• Battery snapper - 1

In today’s tutorial we will learn how to make a Battery level indicator using leds and resistors. Battery level indicator indicates the level of battery just by glowing leds.

HARDWARE REQUIRED

• Led
  
  • Red led -2
  • Green led -2
  • White led -2
  • Yellow led -2
• Single stand wire 2mt – 1
• Resistor
• • 1k -3
  • 470 ohm -2
  • 2.2k -2
• Breadboard 400 points – 1
• 9v battery -1
• Battery snapper - 1

CIRCUIT CONNECTION

• All leds are connect to Series and 470-ohm resistor connect to positive terminal of First led.
• 1 kilo ohm resistor is connected to joint point of Ist and 2nd Led.
• 1 Kilo ohm Resistor is connected to joint point of 2nd and 3rd Led.
• 2.2 Kilo ohm resistor is connected to joint point of 3rd and 4th Led.
• Negative leg of 4th Led is connect to ground.
• Another end of all resistor is connected to each other.
• Positive terminal of Battery is connected to 1k resistor.

WORKING

Connect the 9v battery and LEDs started showing the battery level.

First of all 9v Battery, that is fully charged so you can see all the leds are glowing level up to 4.

Now 7v Battery, that is fully charged so you can see all the leds are glowing level up to 3.

Connect 4v Battery, that is fully charged so you can see all the leds are glowing level up to 2.