Bar graph LEDs Control with Arduino Uno

 

Bar-graph is the combination of LEDs in a Line that mostly use to display the level of the signal.

Applications:

We also use it to show the water, gas pressure, temperature, and light intensity levels also. Simply its general purpose use can use where you want to show / indicate the level of any measured value. It’s important so I decided to include it in this manual (which’s for beginners).

Components:

Arduino Uno

LED Bar graph

Resistor 100R

Pot-meter 1k

Bar-Graph:

We can use this bar graph as shown in the diagram but I have selected only 6 LEDs as bar-graph with Arduino because 6 LEDs bar-graph not available in Proteus for simulation but practically you can use this by extending the code as well.

How we can use a bar graph

Circuit Diagram:

Bar graph with POt-meter using PIC Controller 

Here I am using ADC (built-in) to read the value of the pot-meter and how its works I have discussed this in a previous Project (Fading LED with Pot-meter).

As we know that 10bit ADC max value is 2¹⁰ = 1024 which is divided by no of LEDs.

As  approximately

Now put the condition in coding that when the value of ADC >170 then ON 1^st LED. (See in coding)

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