A simple desk toy that switches itself off. While the idea is non-unique, the design and 3D print files are.
The lid and arm are meant to be 3D printed and fitted to a box of dimensions 7x7x14cm.
The two switches (main switch and reverse stop switch) are soldered to a PCB which is mounted to the enclosure by the nuts included with the main switch. Note: the main switch shown in the photos is red, switches available for purchase are blue. There is no difference.
The main driving arm is mounted to a 9G servo, and designed to hit the main switch at one extension, and hit the reverse stop switch at the other.
A micro-board add-on to an LCD screen inverter to allow for MoBo-less control.
A small (30mm x 10mm) PCB designed to be placed on top of a specific laptop LCD inverter board. This board is designed to fit within the footprint of the existing connector and ground screw pad. The board layout and schematic can be modified to fit other inverter models.
By using this design, one can reuse a laptop backlight for other purposes without needing the original computer’s motherboard. The board facilitates dimming and on/off functionality. Backlights can be used for cheap lighting, or for tracing images between pages.
EAGLE schematic and board layout can be found below, Arduino code as well.