For a fancier solution, [Tom Hammond] whipped up a custom car horn capable of playing a wide variety of sounds. The system uses the Adafruit Audio FX board. This is a unique part, which is ...

giving you the classic train horn sound you're after. As a bonus, you can use the train horn system's air compressor to inflate your tires. This set of horns is designed to take up very little ...

train horns are currently required by the Federal Railroad Administration to sound at volumes of 96 to 100 decibels, which is roughly equivalent to a power tool or a honking car. The aim is to be ...