A small handy device that plays transition music anytime you walk through the door.
- Uses reed switch to detect door opening
- Photoresistor to stop playing if it is too dark
- Potentiometer to adjust light sensitivity
- Potentiometer to adjust volume
- Switch to hard turn off
After wiring, just load onto the micro sd card as many wav files as you like. They must be 8-bit, less than 32000Hz, and in PCM 8-bit unsigned file type. The files must be named #.wav were # is the number of the file starting at 0.
The Reed switch needs to be placed near the door with a magnet attached to the door. This way when the door is opened, the reed switch is no longer near the magnet and it gets activated.
There is also a potentiometer to adjust the light sensitivity and another to adjust the volume.
This could be condensed more if I weren't using an arduino Uno and instead used just the Atmel chip.