Tilt the stick. Move the sky from sunset to midnight.
A navy mini arcade cabinet, 8.6 in tall. Its 3 in window holds a layered scene of palms, hills and a car on the road, lit from behind.
The ball-top joystick tilts 25° each way. Push it left for sunset, right for midnight. Nothing else drives the sky.
Under the deck, the stick's hub carries a toothed sector. Every degree you tilt turns its teeth by the same degree.
The sector meshes with a 20-tooth pinion that turns 3 times as far, the other way: 25° at the stick is 75° here.
A pin on the pinion's lever, 32.35 mm from its axle, runs in a slot in a carrier that can only slide sideways. The turn becomes a push of 31.25 mm each way.
The carrier slides a colour band behind the window, running on rollers at each side. The palms stay put; the sky behind them changes.
Press the red button and 12 LEDs light the scene from behind, with the amber marquee glowing on top. It runs on USB.
Up close
Dark blue sides with a mint pinstripe, an amber marquee on top and a black-framed window on the front. It looks the part from across the room and still rewards a close look.
One stick, one sky
The slider stands in for the joystick. The sector turns with it, the pinion turns 3 times as far, and the crank pin shoves the carrier sideways, taking the colour band with it. Left is sunset; right is midnight.
Tilt the stick. Move the sky from sunset to midnight.
Over USB. The red latching button on the control deck switches it on and off, and 12 LEDs behind the scene light the window and the amber marquee.
It moves the sky. Tilting it slides a colour band behind the window: left for sunset, right for midnight. 25° of tilt each way moves the band 31.25 mm each way, through a toothed sector, a pinion and a crank in a sliding carrier.
4.5 × 4.4 × 8.6 in (114 × 112 × 218 mm) wide, deep and tall, and it weighs 15.8 oz. The window is 3 in square.
PLA, in dark blue with mint side trim, black for the scene and the controls, a red button and a translucent amber marquee.