Instead of many individually wired LEDs for the lights, I'm going to experiment with using SMD 5050 LEDs soldered to PCBs. This will greatly reduce the number of wires required to power and control the many LEDs required for this prop. The PCBs will have screw holes for mounting to 3D printed brackets glued to the back of the front panel.

There will be two such PCBs: one for the 6 x 3 grid of lights, and another for the row of five below that.

This will require all builds to be consistent with the measurements I have for the placement of the lights.

1.156 = 1 5/32"
1.125 = 1 1/8"
1.938 = 1 15/16"

It's my goal for all knobs and switches to have a function. We can deduce the function of some components from the Type 4's use on screen, and some functions I'm assigning so all components have a use or something fun to do.

Knob 1: Toggles the LED flashing speed between slower/faster flash speeds. If you compare how frequently the lights on the Type 4 flash between episodes "Court Martial" and "Mirror, Mirror", you'll see the flash rates are signficantly different.

Knob 2: Toggles flashing lens. Occassionally we see the lens flash, like in the episode "Mirror, Mirror" when Mirror Spock's computer detects Sulu eavesdropping.

Knob 3: Toggles continuous audio. When this function is on, the unit will play through a list of sound files of the various computer processing sound effects we hear on the series.

Knob 4: Volume control

Switch 1: Toggles flashing LEDS

Switch 2: Toggles lens

Switches 3-7: Toggles corresponding LED on the bottom row. Switch 3 will play a computer dialog file to simulate "playing" a data card in the slot. I debated about the possibility of using a reed switch and magnets in the data cards to detect the card's presence, but I decided to forego this and opt to use Switch 3 to "play" the card instead. There are many instances in the series when a button is pressed after a data card is inserted.