How would wire this up to the IR trackside with oscillator module and the MP3 player. Could you provide a scheme so I could follow, thanks!
It will take a few weeks to get it but I am working on it! I'm still working on some arcane technical issues but so far so good.
Wow. The MP3 player is absolutely incredible! There's only 1 IC in there, one diode, 2 resistors and not a single capacitor on the entire board. And all this for $1.07 free shipping. I have it blasting out Pink Floyd right now with room filling sound thru the amplifier module.
I've touted these insanely priced eBay modules for a while now but this one may be the best bang-for-the-buck. Yes, I'll drop back to a "boring" crossing-gate sound and show how to hook it up with the crossing flashers and IR detector when I finish dotting the i's and crossing the t's. 
