This battery powered device synthesises the sound of a train horn.Designed by Perry Leumas in United States of America
This device is designed to simulate the sound of a train horn (or come as close as possible with the given hardware). Specifically is is designed to synthesize the sound of a Leslie S-3L Locomotive A…Read More…
This device is designed to simulate the sound of a train horn (or come as close as possible with the given hardware). Specifically is is designed to synthesize the sound of a Leslie S-3L Locomotive Air Horn. The device is battery powered for portability. It uses a 18650 LiPo cell and features an onboard charger using a standard micro USB port and a low battery indicator LED. The circuitry is able to drive a standard speaker load of 8-4Ω for mono sound. Four adjustable gain settings of 4, 8, 12, and 16 are available for setting the output volume of the audio amplifier with minimal modifications. An onboard microcontroller, the MSP430FR2000 from TI, generates the sound and enables the user control of the sound though a simple push button.
Included is a fully assembled PCB. A 18650 LiPo cell is required but not included due to shipping issues with lithium batteries. They are available from the usual online retailers. Also required but not included is a 8-4Ω speaker.
Design files of the schematic, PCB layout, and code are available at the provided links where you will also find detailed information of modifying the circuitry and uploading custom code to the onboard microcontroller.
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