Great lenses! Are they resin cast?
For siren and other sounds, I feel I should mention the
Benedini micro, capable of controlling multiple sounds from a single channel or serving as a full engine sound + light controller unit. There is a cheap chinese clone available (
dasMikro) with poorly translated instructions, old software and months of fun trying to figure out how it works (This is the one I'm testing in combination with the arduino).
A thread about the clone with instructions on another forum:
https://www.rctankwarfare.co.uk/foru...p?f=81&t=24339