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发表于 2009-1-24 12:04:27
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不用这么麻烦。如果你是用Canon A系列的话。
先升级固件：http://grandag.nm.ru/hdk/ 或http://mighty-hoernsche.de/
中文教程：http://forum.xitek.com/showthread.php?threadid=418343
之后。。。
Using a USB cable, a battery, and a push button switch, you can construct a switch that will allow you to remotely trigger the shutter of your CHDK-enabled camera. Remote triggers are most often used in low-light situations when pressing the shutter button on the camera could introduce picture spoiling camera shake.
Below is a circuit diagram of a basic switch. You can find pictures of a finished switch here (please note that the displayed USB-plug is configured with inverse polarisation)
(原文件名:Remoterelease1rastercy6.gif)
Be sure to check out the "Min. USB-Remote Volts" column for your camera on CameraFeatures page. The 3V CR2032 battery might not be enough to trigger your camera.
To enable remote shooting, the following small script is required.
Script Code (save as "remote.bas" to your /CHDK/SCRIPTS/ folder)
－－－－－－－－－－－－－
@title Remote button
while 1
wait_click 1
if is_key "remote" then shoot
wend
end
－－－－－－－－－－－－－
Some of the newer builds (i.e. JuciPhoX Collaborative Build) have incorporated the modifications from the SDM version of CHDK to allow triggering of the shutter by USB Remote without the need of any script. You will find this option on a sub-menu from the Script Menu. Enter the Scripting Parameters Menu, go to "Remote Parameters" and set the "Scriptless" option of "Enable Remote" to ON (tick-mark in the selection box). If you enable the "Sync Delay" then the shutter will release after you stop the voltage to the USB port. This was done because it was found they could sync the shutters on 2 cameras for stereo imagery much better as the voltage dropped. Under most (single-camera) circumstances you won't need this unless you need to sync the shutter release more accurately to your voltage trigger signal for specialized reasons.
Retrieved from "http://chdk.wikia.com/wiki/USB_Remote_Cable"
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