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809 Town Side Dr. • Apex, North Carolina 27502 • USA
Introduction
The Okii Systems FC1 USB Focus Controller (patent pending) is a battery powered, handheld USB
host device designed to control certain Canon EOS Digital SLR cameras that use Canon's USB
protocol.
The FC1 USB Focus Controller uses the motor in the lens to control focus, even while recording
video. Additional switches can be used to access important camera functions such as recording
start/stop, digital zoom to aid with focusing, engaging autofocus, saving focus points, and
adjusting certain camera settings.
For remote applications, the FC1 USB Focus Controller has been tested past 25 meters using
normal (non-powered) USB extension cables. The HDMI output of the camera is not interrupted,
allowing you to use the FC1 USB Focus Controller at the same time as an external monitor.
Okii Systems LLC
www.okii.net
info@okii.net
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Summary of Contents for Okii Systems USB Focus Controller
- Page 1 Canon EOS Digital SLR cameras that use Canon’s USB protocol. The FC1 USB Focus Controller uses the motor in the lens to control focus, even while recording video. Additional switches can be used to access important camera functions such as recording start/stop, digital zoom to aid with focusing, engaging autofocus, saving focus points, and adjusting certain camera settings.
- Page 2 Okii Systems LLC warrants this product to the original owner against material defects for a period of one (1) year from the original date of purchase. Pursuant to this Warranty, Okii Systems LLC will, at its option, (i) repair the product, or (ii) replace the product with a new or refurbished controller.
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Page 3: Table Of Contents
Table of Contents • Getting Started • Canon USB Protocol • Controller Functions Diagram Focus Control Focus Step Size and Live View On/Off Digital Zoom and Autofocus/Metering Recording Start/Stop and Image Capture Modes Focus Points Camera Settings Focus Zone Control •... -
Page 4: Getting Started
1. With the camera off, connect the controller using a USB A to mini-B cable. Turn on the FC1 USB Focus Controller by sliding the power switch to the “on” position, away from the focus knob. The LED indicator will display the current battery level with a flickering red, yellow, or green light,... -
Page 5: Canon Usb Protocol
USB. Various projects, such as Canon’s own EDSDK, have documented many of the USB commands that Canon uses. Okii Systems has also reverse engineered many of the commands specific to the FC1 USB Focus Controller. -
Page 6: Controller Functions O Diagram
Controller Functions: Diagram The function of each switch is divided into short presses (less than ½ second), and long presses (hold more than ½ second). 1. Short – cycles small/medium/large focus step size Hold – turns live view on and off 2. -
Page 7: Focus Control
Controller Functions: Focus Control The focus can be adjusted by using the center knob or the two directional focus buttons when live view is turned on. By default, turning the knob clockwise will cause the focus to move closer. Turning the knob counter-clockwise will cause the focus to move towards infinity. This matches the focus ring rotation of Canon EF and EF-S lenses. -
Page 8: Digital Zoom And Autofocus/Metering
Controller Functions: Modes The FC1 USB Focus Controller has four multi-function buttons on the right side. The specific function of these buttons changes according to the mode of the controller. The LED displays one of three colors depending on the current mode:... -
Page 9: Focus Points
Button 7: Dynamic focus point Button 6: Near focus stop Saved focus points are not retained through a power cycle of the FC1 USB Focus Controller, but they will be saved if the camera is disconnected or turned off while the controller remains on. -
Page 10: Camera Settings
Warning: If you have saved focus points, the following may cause you to lose your focus point accuracy: 1. Turning the focus ring on the lens by hand. 2. Changing the focus step size. 3. Setting the focus command send rate too fast. 4. -
Page 11: Changing The Focus Command Send Rate
The focus command send rate is saved through a power cycle, so there is no need to set this each time you turn on the FC1 USB Focus Controller. -
Page 12: Switch Test And Reversing Knob Direction
LED). Knob directions and button functions are saved through a power cycle, so there is no need to set them each time you turn on the FC1 USB Focus Controller. Battery Indicator As mentioned in the Getting Started section, the battery life is shown with a flickering red,... -
Page 13: Disassembly
Disassembly Disassembly of the FC1 USB Focus Controller requires the use of a 1/16” and 5/64” Allen wrench, and a Phillips screwdriver: 1. The back plate of the controller case is secured by two visible Phillips head screws. Removing the back plate will expose the circuit board and AAA battery holders. - Page 14 Controller does not turn on. Verify condition of batteries and make sure the power switch is set to the “on” position (furthest away from knob). Controller does not recognize camera is connected. Check that the USB cable is securely plugged into both controller and camera. Verify that the camera works and the battery is charged.
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