A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.so in this tutorial lets build a VU meter using Arduino.
things needed for this
- Arduino
- led
- aux cable
- jumper wire
- breadboard
circuit diagram
 |
| add an aux to a0 pin |
connections
connect anodes of less to pin 2-13
connect cathodes together and connect to ground
connect aux cable a0 and ground
SOLDERING ON A DOT PCB
arrange in a round shape and solder
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