Analog Input bar graph using Arduino

This project gives visual output for different level of analog input. Here the condenser mic acts as analog input sensor. You can use any sensor which you want visual bar graph output.

The mic biased with power supply from Arduino +5V pin and ground pin, array of LEDs are connected with digital pins of Arduino.

analog-bar-graph-mi

Circuit diagram

analog-bar-ckt

Analog Input bar graph Arduino sketch code

Components List

S.NoNameQuantity
1.Arduino uno1
2.LED Red5
3.Resistor-220Ω
Resistor 1KΩ
5
1
4.Connecting wiresas required
5.Mic1

Prototype

analog-bar-graph-proto

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