One wire dual direction LAN.  Takes 4 identical commands for the rec. to see it as a valid command.

 

Pulled up to 5V~.
Pulled down =Mark

This drawing is from

http://controlyourcamera.blogspot.com/2011/02/arduino-powered-lanc-remote.html

Use arduino to drive, Plain English:
http://controlyourcamera.blogspot.com/2011/02/arduino-controlled-video-recording-over.html

 

 

Example code:

 

• ExampleLanc

tons of detail:
http://www.boehmel.de/lanc.htm

Vixia HFS200

2.5m

from http://controlyourcamera.blogspot.com/2011/02/arduino-controlled-video-recording-over.html

Nop = 0x0000,
RecordStart = 0x3318,
RecordStop = 0x198C,
IrisIncrement = 0x5528, // Used for IDLE state
IrisDecrement = 0x5328, // Used for IDLE state
IrisRecIncrement = 0x2A94, // Used for RECORD state
IrisRecDecrement = 0x2994, // Used for RECORD state
IrisAutoAdjust = 0xAF28,
FocusShuttleFar = 0xE028, // Used for IDLE state (value mask 0x0F00: 1 3 5 7 9 B D F)
FocusShuttleNear = 0xF028, // Used for IDLE state (value mask 0x0F00: 1 3 5 7 9 B D F)
FocusShuttleRecFar = 0x7094, // Used for RECORD state (value mask 0x0700: 0 1 2 3 4 5 6 7)
FocusShuttleRecNear = 0x7894, // Used for RECORD state (value mask 0x0700: 0 1 2 3 4 5 6 7)
FocusFar = 0x4528, // Used for IDLE state
FocusNear = 0x4728, // Used for IDLE state
FocusRecFar = 0x2394, // Used for RECORD state
FocusRecNear = 0x2294, // Used for RECORD state

these are the few we want to try

 

lanc on a small canon 220 camera uses a 2/32 submini plug RS 274-0298

 

CANON HFS200 Manual

Canon vixia Hookup VIDEO

 

 

 

 

The command for opening the IRIS is:
Byte 0 – 0010 1000
Byte 1 – 55 (expressed in hexa)