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May 06, 2010, 02:35 AM
SebastianJ's Avatar

CHDK shutter from GWS ICS50 brushed speed controller

As the title says.

Very simple, remove the heatshrink and the aluminum sticker heatsink, unsolder all the power wires and solder the USB wires to the power outlet, the 5V supplied by the RX will trigger the camera.

Since it is PWM and not DC it's difficult to measure current with a standard meter, it will just show as 5V constant, I used a LED to check for function and polarity.

Note that the USB I used turned out to be reverse polarity, black is + and red is -, be sure to check yours before connecting it to your camera.

The ICS50 itself weighs a gram or two when relieved of it's power wires, the heaviest part of the system is the USB cable.

Do not try to use the lipo version, it won't work.

Get your ICS50 here:

CHDK USB remote cable explained:

Another great thread on the subject:

Have fun

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May 06, 2010, 09:07 AM
SebastianJ's Avatar
CHDK USB shutter release on a diet:

I stripped the USB to the essentials, the overall weight is about a tenth now.
May 08, 2010, 03:14 AM
Smile & wave
Gray's Avatar
Very neat work, Thanks for posting.


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