The article describes a method to create a simple LAN controlled Stereo Audio Switch. The Steps involved in building this circuit is quite simple and any beginner can give a try. Read on to know more on this.
After completing the project, the user would get rid of the problem of switching between speakers and headphones on the PC.
The requirements of the project are listed below:
- 1x Arduino equipped with an ATMEGA 168 or 328
- Ethernet shield
- NPN Resistor
- 1N4001 Diode
- 3.5mm Stereo jack sockets
- 3 way 0.1” pin header
- Webduino library for Arduino IDE
- NetAudio Sw Arduino sketch.
The softwares listed above can be easily downloaded from the internet. In order to finalize the transistor and Arduino board, the current and power that is needed for the project to work has to be calculated. For this, two things would be required
- The supply voltage of the relay
- The resistance of the of the relay’s coil.
Once the above set of information is available, then the next step would be to substitute these values in the below formula:
COIL CURRENT = SUPPLY VOLTAGE / COIL RESISTANCE
When the relay is powered up the output would be connected to the input audio source.