I should be able to run wires to 2x seperate buttons to trigger sounds. 1x button for idle sound, 1x button for high rev chainsaw sound.
This board only has a speaker amp output of 2x 2w, Id like to have the output instead going to a large say 50w car speaker.
Is there something i can use after the onboard amp to boost the watt so i can use a large loud speaker while still remaining inside the chainsaw shell?
Also any links including buttons and PSU also very appreciated.
All you need to do is stack amplifiers, something like a stereo amp or you could try one from a car stereo system.I think A lipo supply will be what you want if you are going to be running 20-50W speakers you are probably going to get the biggest one you can that will fit in the case.
You may need to change the battery to power the speakers you will need 12V at 4 amps to get 48Watts and that battery will only provide 1amp at 3.7volts. The C rating of the battery is what will tell you how much current it can deliver the you probably want something 12V and 5C or greater. I would have a look at Remote control car batteries as they are usually around that voltage level and have a high rated current.