The basic layout of the infrared dongle needed for use with DSLR Remote is shown below:
Mainly it consists of two inrared LEDs connected to the tip and center ring of a 3.5 mm stereo headphone jack. There are many ways to build such a dongle but they all share the same principle shown above. Below described is the construction of a rather compact IR dongle.
What you need:
- 2 infrared LEDs (940-950 nm, 10-20°) e.g. LD 274-3 or some LEDs from unused TV remote controls
- 1 stereo audio jack, 3.5 mm
- sanding paper
- instant glue
- duct tape or better heat shrink tubing
- side cutter or equivalent
- soldering iron and solder tin
Sand off one side each of the LEDs where they later can be glued together. Make sure to sand off the same side on both LEDs.
Cut a matching piece of heat-shrink tubing and place it covering most of the LEDs and the upper part auf the jack. If no heat-shrink tubing is available just wrap some duct tape around for insulation.
Schrink the tubing with a heat gun or a lighter.
Ready to use!