Update june 14th 2010: I have posted a new set of pictures on Flickr that show the complete process of building these switches:http://www.flickr.com/photos/fvdk3d/sets/72157624151791739/I have been searching a long time to find the best solution to make a USB remote and I think I have found it
I have made several types of switches, all using the same type of LED light.
If anyone is interested, I sell these LED lights for US$ 10.- for 4 each including worldwide shipping or US$ 17.50 for 8 each including worldwide shipping.
If you are not comfortable with building your own, I also sell ready build remotes for $20.- (single USB cable) or $25.- (double cable for SDM) including worldwide shipping.
The SDM remotes include two right angled adapters or alternatively, can be made with left angled USB cables.
Additionally, I also sell Motorola SKN6182A right angled adapters for $2.- each and multi card readers that are modified to ignore the lock switch for $7.50 each.
Some of the USB remotes that I made for use with CHDK and Stereo Data Maker.
This picture shows how the components of the CHDK / Stereo Data Maker USB remote and how it should be assembled.
I use the remotes with the 4 AG3 batteries that are supplied with the LED lights.
Some people are reluctant to use 4 batteries because that gives 6 volts but since the camera only uses this voltage as a logical signal, this is perfectly safe.
However, if you want to use just 4,5 volts, you can also use 3 AG5 batteries or use just 3 AG3 batteries + a short spring.
As you can see, when the batteries are put in the supplied plastic sleeve, this just looks like a neat factory made battery.
This picture shows how the USB cable(s) are soldered to the PCB of the LED light.
The side with the switch is the V- side.
Afterwards, the connection is covered with a drop of two components glue to provide strain relief.
Frans
