My most recent project was to transfer music with the help of light. This is actually a part of a very large project.
Things that you will need!
- LM386 audio amplifier chip
- LED ( white or blue preffered)
- Audio jack
- Solar Panel
- Capacitors: (50 uF (2), 1000uF (1))
- 3.3 volt and 5 volt power supply
Here a peltier module image is used since a real solar panel was not available in fritzing.:)
This amplifier is extremely easy to make and only costs about 1$ (if the components are purchased in bulk)
Now we have to make the transmitter. It is a very simple voltage amplifier circuit that works with 3 volts. You can make the circuit by looking at the schematic below.
STEP 3: (Not mandatory)
You can also see the image below to get an idea of the circuit on a PCB.
And done. Your wireless transmitter is ready. You can now make it and enjoy. Also see video below for further details.
Link Of the video
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