Building a cycling speaker setup  
Wednesday, September 20, 2017, 06:57 PM - Work
Posted by Administrator
I built a music box for a tow-behind bike trailer. Check out the schematic and video for all the DIY details.







Parts:
Batteries - $37
Battery Charger - $15
Waterproof Switch - $10
Volt/Power Meter (optional) - $19
Bluetooth Audio Amplifier Board - $49
0.625-in x 4-ft x 4-ft particle board/plywood - $13
Polystyrene Foam Board Insulation (vibration resistance) - $13
Speaker Terminal(s) - $6
100+ W Speakers - Wide range of prices, but less than $40 is possible.
Spare wire, screws, caulk, etc.
Total cost: ~$180
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