Box with a stand for a PS3 Eye camera to be used for infrared tracking

thingiverse

We developed a box with a stand to repackage the PlayStation 3 Eye camera for infrared tracking purposes. The front side of the box features multiple holes for 5mm IR LEDs and the holes are slightly tilted to increase the illuminated area. The box is equipped with a pocket for an USB-B socket and for a 5mm barrel connector socket to power the IR illumination. We use the IR cameras to track a head position and a position of a half transparent mirror in a seated augmented reality setup. For more details on our Light Chisel project, see the project site:http://dcgi.felk.cvut.cz/projects/lightchisel/ You may as well print the Light Chisel on your printer:https://www.thingiverse.com/thing:820765 You may need to print replacement boxes for the PS3 Eye cameras for the tracking purposes: You may as well print the Light Chisel on your printer:https://www.thingiverse.com/thing:820765 You may need to build a pair of infrared cameras for head tracking:http://www.thingiverse.com/thing:820888 Instructions Each of the camera boxes is equipped with 12 IR LEDs. We use the LD 271 IR LEDs by OSRAM. We connected the LEDs into 4 serial chains and we picked a series resistor for each of the LED chains to draw a current of 40 mA. We built an add-on regulator board into a PC to deliver 9V/1A from a 12V Molex connector. Then each of the two LED chains consisting of 5 LEDs in series requires a series resistor of 68 Ohm, each of the two LED chains consisting of 6 LEDs in series requires a series resistor of 33 Ohm to draw around 40mA per single LED. Be careful to not overheat the LEDs. The datasheet of the LD 271 LED allows a maximum of 100 mA DC current per LED, but another graph shows current derating with increasing temperature. The LEDs will not withstand continuous 100mA current and one of our boxes printed from PLA actually melted under such a high temperature load. With the 40mA continuous current per LED the temperature at the LED leads rises to around 45 degrees of Celsius, which is OK. The electronics board is held inside the box by the original screws and by two additional M3 screws. The box is screwed to the holder by additional 4 M3 screws.