Simple Bluetooth Speaker Project

"Pop Drop" speaker charges via USB port. https://amzn.to/36aDN8l

Homemade "shorty" gondola sized especially for this speaker

Gondola sized to be as small as possible, but speaker unit might fit inside an O gauge boxcar with a little surgery. (Lining the bottom of the tiny gondola with aluminum foil or metal from a tin can my help with eliminating electrical/magnetic field interference from the track, turnout solenoids, etc., and seems to aid in the Bluetooth reception for the speaker.)

Speaker on a Lionel O27 flatcar.

Speaker Test Video On YouTube
(Video must be accessed through YouTube due to copyright issue with music used.)

It is simply a purchased rechargeable battery powered portable Bluetooth speaker (in a homemade shorty gondola) paired with an Android app:

Custom Soundboard Creator App Link

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