Every TV and monitor is different, and exactly how and where to best mount the LEDs is more craft than engineering. This is where the “maker ingenuity” comes into play!
While some of our customers have fabricated amazing metal frames and laser-cut acrylic mounting plates, the tools and materials really don’t need to be that advanced. To prove this, our sample setup uses nothing more than cardboard and tape! You can keep it simple or take it as far as your personal skill set allows. It’s not rocket science!
Here we’ve fashioned an LED holder using illustration board from the nearby art supply store. Our template is sized to match the back of the monitor, and a notch has been cut out at the bottom center to accommodate the monitor stand:
Next, calculate the spacing for a ring of 25 LEDs. For this monitor, it worked out nicely as a 9x6 rectangle, roughly 2" spacing, with a one pixel gap at the bottom where the monitor stand protrudes. Perfect!
Notice how the LEDs are spaced along a grid: there’s an equal number along the right and left sides, and (except for the gap for the monitor stand) equal spacing along the top and bottom. As mentioned in a prior page, the software may need to be adjusted for the number of LEDs across and down, if your template is different than this.
The first LED was attached at the center bottom, just to the left of the monitor stand, and then the rest were positioned in order around the perimeter, ending just to the right of the stand.
Once the LEDs are situated, the Arduino can be placed (double-stick foam tape works nicely) and wired in. Connect a USB cable between the Arduino and computer, and a compatible 5 Volt supply to the LED power connector. The mass of wires and tape may look chaotic from this side, but once the monitor is set up close to a wall, nobody will see it.