Controller board
Reused from a previous cake. Based on a Pololu A-Star 32U4 Arduino/Genuino-compatible microcontroller. Power comes from 4 AA cells. A flying lead with a JST-ST connector connected to the Neopixels.
The presets provide a way to adjust parameters after installation — always handy. In this cake there was only one adjustable parameter, which was the pulsing rate for Finn’s lightsaber.
The quarter-inch jack socket is for a foot switch, so that the lights can be muted when birthday boy or girl blows out the candles.
Controller board
Reused from a previous cake. Based on a Pololu A-Star 32U4 Arduino/Genuino-compatible microcontroller. Power comes from 4 AA cells. A flying lead with a JST-ST connector connected to the Neopixels.
The presets provide a way to adjust parameters after installation — always handy. In this cake there was only one adjustable parameter, which was the pulsing rate for Finn’s lightsaber.
The quarter-inch jack socket is for a foot switch, so that the lights can be muted when birthday boy or girl blows out the candles.