Musical Doorbell devices - Power via doorbell-transformer

Projects General Guidance
1

Hello and Servus,

i have some questions which are hopefully not that hard to answer for you.

I wanna use for my first project my Arduino Uno and build a musical doorbell.

I have no clue of coding, but i want to lern it.

1.) My doorbell-transformer have 9vDC 0,2Amp which are 1,8W.
Do you think this is enough power for the Adruino Uno, AD-Converter, Amplifier and a small speaker?
If not i need to think about some additional power supply.

2.) Is there a Amplifier with a ADC inc?

3.) What additional hardware did i miss for this project?
I have a doorbell already installed and it whould be cool to use the existing signal as the trigger.
So i dont need a transmitting device.

(Sorry I am not a native english speaker)

2
  1. No. There's nothing left for the controller. The bell needs it all.
  2. Programable resistor arrays can be used to create voltage, not current.
    3)Arduinos are rarely suitable for generating audio. Additional hardware is needed.
3

Railroader:

  1. No. There's nothing left for the controller. The bell needs it all.

OK thanks for this info

Railroader:
3)Arduinos are rarely suitable for generating audio. Additional hardware is needed.

Arduino --> DigitalAnalogConverter --> Amplifier --> Speaker
Isn't that the way?

4

In principal, yes. However a DAC needs to be fed very precisly in order to awoid serious distorsion.
There are ways to handle sound, using the right controller and proper sound modules. This will scale up and make it all quite a bit more advanced then Your initial approach.

5

Google arduino music player

To see what ots have done and parts used.

It might be a bit steep ffor a beginner but there should be lots of tutorials