Blackmagic PTZControl

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Developer Information

Blackmagic
PTZ Control

Camera Control using ATEM, PTZ Control over SDI,
VISCA commands, Controlling Pan, Tilt and Zoom with
Blackmagic 3G-SDI Arduino Shield, Controlling your Arduino

April 2018

Contents
Blackmagic PTZ Control

Camera Control using ATEM  3
PTZ Control over SDI  3
VISCA commands  4
Controlling Pan, Tilt and Zoom with Blackmagic 3G-SDI Arduino Shield  5
Controlling your Arduino  6

Camera Control using ATEM
VISCA
All ATEM switchers with a remote port support VISCA camera control via RS-422. VISCA
commands are defined by controlling the cameras via ATEM external hardware panels, such
as ATEM 1 M/E Advanced Panel and ATEM Broadcast Panels.
Refer to the ATEM Production Studio Switchers and ATEM Television Studio Switchers manuals
for more information.
5

4

9

3

8

2

7

1

6

Receive
(–)

Receive
(+)

Transmit
(–)

Transmit
(+)

Ground
Pins

8

3

2

7

1, 4, 6, 9

RS-422 PTZ pin connections.

PTZ Control over SDI
ATEM
ATEM external hardware panels, such as ATEM 1 M/E Advanced Panel and ATEM Broadcast
Panels can control PTZ camera heads via your switcher’s SDI program return output. By
connecting the program return feed from your switcher to a Blackmagic Micro Studio Camera,
then connecting the SDI output from the camera’s expansion cable to your PTZ head, you can
control the head via the SDI signal.
For more information on PTZ control using a Blackmagic Micro Studio Camera refer to the
Blackmagic Studio Cameras manual. This manual can be downloaded from the Blackmagic
Design support center at www.blackmagicdesign.com/support

Blackmagic 3G-SDI Arduino Shield
Blackmagic Micro Studio Camera 4K supports PTZ output in the form of VISCA commands,
which can be sent to a compatible motorized head. By using a Blackmagic 3G-SDI Arduino
Shield, you can send pan, tilt and zoom commands over SDI to your Blackmagic Micro
Studio Camera 4K. Your camera will then translate these SDI camera control protocol
commands into the VISCA protocol, and send them to a compatible motorized head via the
9-pin connector on the expansion cable labelled ‘PTZ control’.
This means that you can use one SDI cable in a live production environment, to send camera
control commands to remotely control any setting in the camera, as well as send PTZ commands to
a compatible motorized head to control pan and tilt. The pan and tilt commands will be sent by your
Blackmagic Micro Studio Camera 4K to the motorized head, whereas lens related commands such
as iris, focus and zoom commands will be sent to the active lens that is connected to the camera.

Camera Control using ATEM

3

The commands that the Micro Studio Camera 4K can accept over SDI are:
‚‚ Lens Zoom
‚‚ Lens Focus
‚‚ Lens Iris
‚‚ Pan Tilt

‚‚ Memory Set
‚‚ Memory Recall
‚‚ Memory Reset

These commands are referenced in the ‘Blackmagic SDI Control Protocol’ in the
‘Blackmagic Camera Control’ developer information document which can be downloaded at
www.blackmagicdesign.com/developer/
Most PTZ heads support the setting and recalling of their positions but it is a good idea to
check which commands are supported by each PTZ head manufacturer.
The commands that are output through the ‘PTZ control’ connector in the form of VISCA
commands are:
‚‚ CAM_Memory
‚‚ Pan-tiltDrive

VISCA commands
Up

8x 01 06 01 VV WW 03 01 FF

Down

8x 01 06 01 VV WW 03 02 FF

Left

8x 01 06 01 VV WW 01 03 FF

Right

8x 01 06 01 VV WW 02 03 FF

UpLeft

8x 01 06 01 VV WW 01 01 FF

UpRight

8x 01 06 01 VV WW 02 01 FF

DownLeft

8x 01 06 01 VV WW 01 02 FF

DownRight

8x 01 06 01 VV WW 02 02 FF

Stop

8x 01 06 01 VV WW 03 03 FF

AbsolutePosition

8x 01 06 02 VV WW
0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF

RelativePosition

8x 01 06 03 VV WW
0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF

Home

0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF

Reset

8x 01 06 05 FF

Reset

8x 01 04 3F 00 0p FF

Set

8x 01 04 3F 01 0p FF

Recall

8x 01 04 3F 02 0p FF

Pan-tiltDrive

CAM_Memory

VV:
Pan speed 01 to 18
WW:
Tilt speed 01 to 17
YYYY:
Pan position F725 to 08DB
(center 0000)
ZZZZ:
Tilt position FE70 to 04B0
(image flip: OFF) (center 0000)
Tilt position FB50 to 0190
(image flip: ON) (center 0000)

p:
Memory number (=0 to 5)
Corresponds to 1 to 6 on the
remote commander.

Compatible motorized heads include the following:
‚‚ KXWell KT-PH180BMD
‚‚ PTZOptics PT-Broadcaster
‚‚ RUSHWORKS PTX Model 1

VISCA commands

4

Controlling Pan, Tilt and Zoom with
Blackmagic 3G-SDI Arduino Shield
Using the Blackmagic 3G-SDI Arduino Shield with an Arduino board, a joystick and a switch,
you can control a PTZ head via Blackmagic Micro Studio Camera 4K.
Connecting your Blackmagic Micro Studio Camera 4K to the Blackmagic Design 3G-SDI Shield
1

Connect the Blackmagic Design 3G-SDI Shield to an Arduino board.

2

Connect the custom shield to the Arduino board.

3

Attach the SDI output connector from the shield to the SDI input on your
Blackmagic Micro Studio Camera 4K and set the camera as camera number 1.

4

Connect the joystick and button to the shield

The joystick is mapped as follows:
‚‚ X axis adjusts the PTZ head’s pan.
‚‚ Y axis adjusts the PTZ head’s tilt.
‚‚ Pressing the joystick button tells the PTZ head to store the current X,
Y position in memory.
‚‚ Pressing the switch recalls the stored position.

NOTE The ATEM SDK supports the Blackmagic SDI Camera Control Protocol, and is an
alternative to using a Blackmagic 3G-SDI Arduino Shield for control.
Refer to the ATEM Switchers SDK manual for more information. The ATEM Switchers
SDK manual can be downloaded at www.blackmagicdesign.com/support.

Controlling Pan, Tilt and Zoom with Blackmagic 3G-SDI Arduino Shield

5

Controlling your Arduino
The following sketch demonstrates a simple example of using a joystick and button with
an Arduino board and the Blackmagic 3G-SDI Arduino Shield, to control a PTZ head via a
Blackmagic Micro Studio Camera 4K.

Controlling your Arduino

6

Controlling your Arduino

7
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