I'm sure someone on the forum has seen this already in some form. If not here's a very interesting video I saw today. I like the concept and wanted to know if anyone has attempted this?
I assume it's a solenoid valve that opens up a feed from a smoker that's triggered by the recoil signal from the board?
I knew someone once, who had a smoking barrel. He did it by having a smoke unit fill a bellows, and a servo collapsing the bellows when the gun was fired. It was a simple arrangement but it worked pretty well, as it emitted a short blast of smoke.