Cryptap: A rhythm-based door lock

Step 4 Wiring it together

The Teensy was no problem. It comes with pins, so you can plug it directly into the breadboard.

I decided to color-code the wires to the door strike with red (+) and black (-) banana cables from the lab's broken parts box. There were some plugs chopped off from their wires, so I dremeled away some plastic to expose a solder point. I really like how the lab banana plugs can plug into each other.

I used Apple's phone cable to connect the buttons and status light outside the room to the Teensy inside. Since one side was broken, I chopped off that end and soldered in the four-pin header, sealing it off with hot glue. This plugged nicely into my breadboard. The side that I left the plug on went into the modular jack I salvaged from the router. All four wires were used (GND, status light, start/stop button, code button).

In case you haven't noticed, I like plugs and connectors. The power brick connected to the power jack that I swiped from the router.

Threading the wires through the wall pipes wasn't too difficult, because of the flexible grabber thing. That really saved my day.