Skip to main content

How to make battery level indicator

Hello friends welcome to my blog.
In this blog we will learn about how to make Battery level indicator.



Required Material : -

Item                  Quantity 

Pcb                          1

LED                         4

Resistor 1k            4


Circuit Diagram / connection :-





The circuit diagram of Battery level indicator is shown in above figure.

Circuit Diagram is very simple . In this all LEDs are connected in series .

Negative terminal of first led connect with positive terminal of second led and Negative terminal of second led is connect with the positive terminal of third led. And one wire is brought out from the positive terminal of first led.

And resistance I connected in parallel ,one end of resistance is connect with the led and another end is connect to each other and one wire is brought out. 

Wire brought out from the led is positive terminal where's wire brought out from the resistance is negative terminal.

Working :- 






For more information :-

https://youtu.be/38qu8fE2qjA








Other blogs,

How to make auto irrigation system:
https://youtu.be/Bq-zpbWmoR4





Comments

Popular posts from this blog

How to make auto irrigation system

Hello friends welcome to SR Tech and Tutorial . We will learn about how to make auto irrigation system . Required components : Sr no.       Item                                Quantity 1.           Soil humidity sensor.       1 2.           water pump (9v).              1 3.           Relay module (9v).           1 4.           9v battery.                          2 5.           7805 ic.                                1 6.           10uf capaci...