Just a little update for those interested. I really don't mean to bang on about how good this unit is, but I have been 'chuffed to bits' with the unit itself and the personal help of Alan Bond, the chap who designed the module for the Technobots web shop.
Further to being even more patient and ever helpful Alan has further tweeked the programmable sound generator to work to my spec for Henry's Toylander.
The unit is already hugely programmble, with the user being able to select and modify items from the list underneath, but was intended to work from the output of an RC model's receiver.
Program options list :
Cylinder count of the engine, top speed, tickover speed, tone of built in horn and the actual 'voice' of the sound (there are 10 standard ones, plus 10 that the user can play around with)
Alan has now adapted the design to run from a separate potentiometer (I have mounted mine right beside the speed control pot under the pedal) and has made a couple of slight changes to the amount of time the 'engine' takes to wind down before stopping (the boat wind down was perfect for large fly-wheeled boats, but a little too long for a four cylinder diesel).
If you are considering adding sound, I think that this particular unit is well worth considering, so see what you think:
http://youtu.be/nHJhrRJCFRM
