ARDUINO VU METER

hey person reading this.

last week a friend of mine who is not so familiar with arduino and electronics needed a vu meter for his school project. he supplied me with an arduino and an lcd. the rest was up to me. i searched around the internet to find code for it without succes. many people show a vu meter but dont give any tips or code. so i started to write code myself. 

this code is not complete. it does doe strange things when you disconnec the audio jack. also when no ignal is found it gives full barrs(which i like)

what is complete is:
-nice looking edges
-signal smoothening
-loading screen(can be removed just for show)
-arduino shield-like connectins(just plug it on and ready)

1 thing i ask from you. i am a youtube partner. i dont get many vieuws but the money i get from it always goes to projects like this. if you just watch the video below and check out my channel for my other video's it would be of great help to me. 

thank you for reading this and enjoy the code.

Step 1:

first you need to connect the lcd screen. the pinout is like on the picture. the potentiometer is to adjust the contrast of the screen so you get nice clear image.

Comments

[digital25]

Hello Friend
I can only put your diagram where you can connect the dock are three connections, where the 2 cables going to arduino, I hope I could help you a picture as example the connection of lcd with arduino, but the final stereo audio connection which will ?

I await your response

traduccion en español

Hola Amigo
solo que pueda poner tu diagrama donde pueda conectar la base que son 3 conecciones, donde va las 2 cables al arduino, espero podia ayudar en un dibujo como lo tienes ejemplo la coneccion de lcd con arduino, pero el final de audio stereo donde va coneccion?

Espero su respuesta

[pinhead1984]

I'm having difficulties identifying where I could adjust the sensitivity for either channel. I find that it is still producing a reading when there is no sound being inputed from a device.

[siemenwauters]

that is indeed a problem i have as well. its becous of signal interference if you touch the jack it wil also start to move. i am just a beginning programmer so i did not know how to solve this. i hope you still enjoy the rest of the working code. maby someone else can solve this.