From what it looks like, if anyone wants to build one they'll need:

- An IC (the one he used seems to be http://www.ebay.com/itm/5-Rare-Vintage-GOLD-NEC-044-D4164D-4...)

- A small lens to place over the IC (http://www.ebay.com/itm/MTV-6MM-CCTV-IR-Lens-For-Security-IP...)

- A parallel to USB cord if you don't have a computer with a parallel port (http://www.ebay.com/itm/USB-to-PRINTER-DB25-25-Pin-Parallel-...)

Please correct me if I'm wrong about any of these parts - I haven't tried to build one myself.

Here's my rudimentary understanding of the pin connection: (to connect it yourself, use https://upload.wikimedia.org/wikipedia/commons/b/b3/Pin_numb..., https://upload.wikimedia.org/wikipedia/commons/e/e0/Parallel..., and https://upload.wikimedia.org/wikipedia/commons/e/e1/25_Pin_D... as guides)

IC-Parallel

2-1

3-14

4-16

5-8

6-4

7-3

8-18

9-9

10-7

11-6

12-5

13-2

14-12

15-17

16-25