by choc-ice » Sun Jul 26, 2015 3:26 am
That's a really interesting idea, Scalextric did a "SoundTrack" box in the 1980s which produced engine sounds and even skid and crash sounds, although it was fixed to the side of the track and didn't go in each car. That might be worth considering to get a more realistic sound from a larger speaker?
I think the main problem is you'd need a chip inside to handle all the realistic sounds you need. The trains seem to just play 3 sounds:
1. It senses a little movement then nothing - it plays the sound file of a stationary engine.
2. It senses movement that's continuous - it plays the sound file of an accelerating engine.
3. Once (2) has happened for a bit and the motion sensor decreases it plays the sound file of a slowing engine.
For a car you need more variation, although it is possible because that's what video games do. You might want:
1. Current through the track increases - accelerating noise, but with it changing up a gear or two if held (don't let it sound like the Fast & Furious with that well known 15 speed gearbox)
2. Sudden drop in track current - blip the throttle and change down, if still no current drop another gear
But you'd need a tame software engineer to make that work I think. Stick at it!