Bicycle boombox

thingiverse

I designed this portable boombox to fit snugly in a standard bicycle's water bottle holder. I integrated the MSEQ7 spectrum display, which was created years ago. Boombox Components List: 1. MP3 Module https://aliexpress.com/item/5V-Slim-Mini-Size-DIY-MP3-KIT-WAV-MP3-Player-Audio-Decoding-Decoder-Module-Board-With/ 2. Bluetooth Module BK8000L http://s.click.aliexpress.com/e/iznH8JI 3. 3W Amplifier http://s.click.aliexpress.com/e/bMDpHKQ8 4. 3W 4 Ohm 40 mm Speakers http://s.click.aliexpress.com/e/zzaDZWo 5. Step-Up Module http://s.click.aliexpress.com/e/bRHUw2ZK 6. 3-Way Switch (acquired from a broken cassette player) 7. 18650 Li-Ion Battery + Holder 8. Spectrum Indicator (created as an improvisation, but can be purchased here) http://s.click.aliexpress.com/e/bIe1TRuM 9. Charger Plate http://s.click.aliexpress.com/e/b0sQQrCU 10. M3 Screws and Glue The tiny speakers produce adequate sound, despite not being overly loud, but they do tend to overheat when played at maximum volume. The addition of the Step-Up module increased the amplifier's voltage to 5.5V, resulting in more power. The device operates for approximately three to four hours on a single 2200mAh charge.