Detailed step by step, written instructions: www.instructables.com/id/Wirel...
A year ago I had bought these bluetooth earphones (www.amazon.com/gp/product/B01...) from amazon for around $17. They were working just fine for the first 6 months when one of ear pieces stopped working. From then, they've just been lying around. While cleaning my room, I found these and decided to reuse the bluetooth receiver chip inside which was still working.
I came up with this idea of making a Bluetooth speaker with an addition of music reactive disco lights controlled via arduino.
So this project used a TDA7297 15W amplifier board along with a 10W speaker. You can even play music via aux. The bluetooth part also consists of voice calling, playback options, redialling, picking up phone or hanging up which were already present in the wireless earphones.
There are 4 RGB LEDs installed in the front, which change their color on every beat of music. There is a set threshold of the amplitude. The arduino takes audio signal as input. If it goes above the threshold, the color of the LED sets to a random one.
I used to hardwood to make the enclosure and 3x 18650 rechargeable lithium ion batteries to power the project. I haven't yet calculated the time for which the battery lasts.
It will take you almost 2 days to complete the project. This is also a budget build. How better can it be to listen to music on your homemade speakers!
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Parts Required:
-1x Good quality speaker (10-15W)
-1x TDA7297 amplifier board
-1x Old bluetooth earphones (the chip should work) OR Bluetooth receiver chip
-1x Arduino nano or pro mini
-3x 18650 Lithium-ion batteries
-4x RGB LEDs
-1x On/Off toggle switch
-1x 6-pin 2 way switch
-1x Female audio jack
-2x 10K ohm potentiometers
-1x IN4007 diode
-4x Nuts and bolts
-Sufficient hardboard
-Rainbow wire
-Female headers
-Safety pins
Tools:
-Soldering iron + solder
-Hot glue gun + glue sticks
-A bottle of super glue
-Hack saw
-Multipurpose rotatory tool with necessary attachments
-Wire cutter
-Screwdriver
-Pliers
Total Cost: $15 (1000 INR) approx. excluding the earphones
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For any assistance, you can drop a comment below or contact me personally at agrawalsanyam946@gmail.com
I can even provide you the pdf file will detailed instructions if you want.
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Follow me on instructables: www.instructables.com/member/S...
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Background Music:
Buddha by Kontekst / kontekstmusic
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Morning Sun by Nicolai Heidlas Music / nicolai-heidlas
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BACK IN SUMMER by Nicolai Heidlas Music / nicolai-heidlas
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