Canon Camera, Руководство хакера

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C H A P T E R 4 Teach Your Camera New Tricks
So, what do you need to build a cable release? First, a USB cable that you
can sacrifice, then a switch and a battery. A good option is a small LED
flashlight that you can buy for a few cents. With such a flashlight, a
USB
Type-A to mini-A cable, and some soldering skills, you can build your own
remote control. For an example, see https://sites.google.com/site/canonre-
motehowto/ . For building a DIY infrared remote control, see www.instruc-
tables.com/id/Remote-for-Canon-Compact-Cameras/ .
Figure 4-45
A cheap LED flashlight (1) is the basis for a homemade USB remote control. It’s important that it have a switch
and not be turned on or off by twisting its head. This one has four batteries resulting in a voltage of 6V. One of the
batteries must be removed because we only need 4.5V. The spring at the bottom end must be stretched a bit to
bridge the gap of the missing battery. The LED (2) is twisted off with tweezers. A voltmeter is used to test which
contacts are positive and negative. Then the larger USB plug is removed from a spare mini USB cable. The head of
the flashlight is stripped over the cable; then the red wire is soldered to the positive contact (3) and the black wire
to the negative contact. The flashlight head is screwed on again and sealed with epoxy or hot glue (4).
4.9.3 SDM functions
The remaining functions in the Remote parameters submenu under the
header “synchable remote” ( Figure 4-43 ) were originally developed in the
Stereo Data Maker (SDM) project (section 7.5) but are now also part of the
CHDK. These functions require a Ricoh CA1 or a compatible remote control.
f
Enable Remote . This entry enables the SDM functionality in scriptless
mode. The camera can now be controlled through the Ricoh CA-1 .
f Enable Synch . Allows synchronizing two or more cameras through
linked remote controls. This option is typically used for stereo or matrix
photography (section 7.7.4).
f
Enable Synch Delay . Enables delay settings for synchronized cameras
down to 1/10,000 sec. Although not recommended, it is possible to
synchronize different camera models by using a
Synch Delay with one
camera (section 7.7.4).
f
Synch Delay 0.1ms . A delay can be dialed in down to 1/10,000 sec. This
is added to the value in the following entry.
f
Synch Delay 0.1s . A delay can be dialed in down to 1/10 sec. This is
added to the value in the previous entry.