You can find the original project at Elliot Sound Products.
If you want the PCB layout please visit Tonepad, it's an awesome page. And YES, it works, despite the mount quality... =p
The idea is to use a low-lux b&w camera connected to an old camcorder viewfinder (you can easily find it at any repair shop). The infrared acts as an illuminator.
Materials:
1 - 5x7cm solderable breadboard
1 - Arduino Nano v3.0
1 - 433Mhz RF Transmitter module
1 - 5-pin screw terminal
1 - Ethernet cable (~30cm)
4 - LM317 regulators (or cheaper)
4 - 330R and 1k resistors
3 - 10k resistors
Arduino code: Download
Schematic:
Materials:
1 - Arduino Lilypad
1 - Lilypad power supply module (5V)
1 - 433Mhz RF receiver module
1 - Ethernet cable (~60cm)
4 - 330R resistors
Arduino Lilypad code: Download
Schematic: I don't have the schematic since it is quite simple.