Analog Style VU Meter on OLED Display – Arduino Compatible

  • Rajkumar Sharma
  • 1.153 Views
  • moderate
  • Tested

This is an analog-style VU meter on a 0.96″ OLED Display. The project has a 0.96″ OLED display, Atmega328 Microcontroller, 3.5 mm audio EP socket for audio signal input. This Arduino compatible hardware can be program using Arduino IDE. Operating Supply 5V DC.

Specifications

  • Operating Supply: 5V DC
  • 0.96″ OLED display
  • Arduino Compatible
  • PCB dimensions: 40.48 x 27.31 mm

Connections

  • CN4 or CN3: Audio Signal Input (From Headphone or Audio Signal)
  • PR1 Trimmer Potentiometer: Audio Signal Level Adjust
  • CN2: Programming Connector
  • CN1: OLED Disapply 0.96 Inch – 4 Pin

Resources

Arduino Programming

Arduino code is available as a download to test the project. A new ATMEGA328 chip is required to bootloader flashing before programming the microcontroller with Arduino IDE. For more info check the link below:

https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

Arduino bootloader connection flashing
Arduino Programming Connections

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER PART NO
11CN14 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
21CN28 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5321-ND
31CN3OPTIONAL
41CN43.5MM FEMALE EP SOCKETCLIFFElement142518188
52C1,C30.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
61C210uF/10V SMD SIZE 0805MURATA/YAGEODIGIKEY
72C5,C622PF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
81C710uF/16V SMD SIZE 1210 OR 1206MURATA/YAGEODIGIKEY
91D11N4148MICROCHIP TECHDIGIKEY1086-15170-ND
101PR110K TRIMMER POTNIDEC COPALDIGIKEYCT6EP103-ND
111R20E SMD SIZE 0805MURATA/YAGEODIGIKEY
121R31M 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
132R4,C4DNIDIGIKEYDO NOT INSTALL
141U1ATMEGA328TQPF-32MICROCHIPDIGIKEYATMEGA328PB-AURCT-ND
151X116MhzECS INCDIGIKEYX1103-ND
161R110K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
171OLEDBLUE 0.96" OLED Display I²C 4-PINALIEXPRESS

Connections



Gerber View

Photos

Video

Version 2.0 of VU meter

This is Version 2.0 of the above VU meter which the PCB is smaller and audio input is connected to a header connector and not a 3.5 mm female jack. To build this project use Gerbers_V2.0.zip

ATMEGA328 Datasheet

gravitech_atmega328_datasheet

PCB

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Antonio dedola

How mutch for two complete vu meter ?
Grazie

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