Last Updated on March 27, 2024
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.
Circuit diagram
Analog Input bar graph Arduino sketch code
Components List
| S.No | Name | Quantity |
| 1. | Arduino uno | 1 |
| 2. | LED Red | 5 |
| 3. | Resistor-220Ω Resistor 1KΩ | 5 1 |
| 4. | Connecting wires | as required |
| 5. | Mic | 1 |
Prototype
