[OT] infrared remote for digital SLR camera

    Jun 05 2006 | 3:20 pm
    Hi, my Canon 350D camera can be controlled with an infrared remote. I want to make my own max controlled remote instead. I don't know much about infrared or the hardware to build this, so I have no idea how hard this is or where to start. Any advise on how to go about this? Do I need the original remote to figure out the frequency/ interface? Thanks.

    • Jun 05 2006 | 4:14 pm
      Easiest solution would probably be to hack the remote. Put relays or something like that where the push bottons are. Then program a microcontroller to throw the relays. Then get a bluetooth module to control the mc via serial Then get max to send serial data via serial object & bluetooth. ... If this is a firewire cam you might be able to control it via jitter...
    • Jun 05 2006 | 4:59 pm
      You'll need a microcontroler (such as Arduino or Basic Stamp) and a IR emiter. And you'll need to know obviously what your remote sends for each function you need.
      In most case, IR remotes send serial binaries in the form of fast pulses.
      PEr example, for "change channel", the remote would send 00110101 (dark-dark-light-light-dark-light-dark-light) very fast (could be more or less than 8bits). So you'll need to find the protocol sheet or analyse yourself the remote communication with a IR receiver plug into your microcontroler.
      Another approch would be just directly hack the remote: remove the push buttons of the remote and solder switches controled via MIDI or via your microcontroler.
      some googling under IR remote hacks and MIDI switchs should help. Good luck! PC
    • Jun 05 2006 | 5:19 pm
      If you don't care about the remote too much, I would go for hacking it as well. Take it apart and see how the button causes a signal to be emmitted. It probably causes 2 wires to connect, so if you can throw in a relay in place of the button as was suggested earlier, I think you would be in good shape. Otherwise, you will need to get an oscilloscope to look at the signal being sent over IR (unless you can find docs on the protocol) and program an micocontroller to emulate the remote.
      best, wes
    • Jun 05 2006 | 5:53 pm
      thanks for the responses. I think I have to go with hacking the original remote. It's about 25 euro's so the price is not really an issue. I hoped for some kind of universal infrared emitting thingy with a usb interface :-). I know too little about this stuff to build one on my own / analyze the signal. I'll google around some more on the remote hacking. Thanks.
      best, - thijs