MP3 Bike Horn
thingiverse
This is just for fun, nothing serious :-) MP3 Bike horn based on cheap MP3 Player board and few additional components. Powered by 3 AAA batteries. MP3 Player board like this: https://www.ebay.com/itm/TF-Card-U-Disk-Mini-MP3-Player-Decoder-Audio-Voice-Module-for-Arduino-DFPlayer/172068842193 It uses reentrant horn that can parametrized for a different size: https://www.thingiverse.com/thing:3133987 Schematic and Eagle files included - if anybody is interested. It can play 4 melodies (mp3 files) stored at SD Card. Video: https://youtu.be/NGRnqf-xwgw
With this file you will be able to print MP3 Bike Horn with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on MP3 Bike Horn.