MRMC NUCLEUS-M LENS MOTOR User manual

Nucleus-M
Lens Motor
Quick Start Guide
QSG Product Code: MRMC-2319-00
Product Covered: 26548

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Nucleus-M Lens Motor Quick Start Guide
QSG Product Code: MRMC-2319-00
Product covered: 26548
© 2024 Mark Roberts Motion Control Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, or translated
by any means — graphical, electronic, or mechanical — including
photocopying, recording, taping, or storage in an information retrieval
system, without the express written permission of Mark Roberts Motion
Control.
Although every care has been taken to ensure that the information in this
document is accurate and up to date, Mark Roberts Motion Control
continuously strives to improve their products and may make changes to
the hardware, firmware, and software described in this document. Mark
Roberts Motion Control therefore cannot be held responsible for any
error or omission in this document.
All product names mentioned herein are the trademarks or registered
trademarks of their respective owners.
Contact information
Mark Roberts Motion Control Ltd. 
Unit 3, South East Studios
Blindley Heath
Surrey 
RH7 6JP
United Kingdom
Telephone: [phone]
E-mail: [e-mail] (sales and general enquiries) 
[email protected] (customer support)
Web: www.mrmoco.com 
www.mrmocorentals.com

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Contents
Contents........................................................................iii
Chapter 1 Quick start ..................................................................... 1
Safety........................................................................................1
Overview ................................................................................. 1
Connecting the cables ...........................................................2
Using the User Interface........................................................3
Hand controller Wireless Control ..............................3
Motors ............................................................................4
Tilta Hand Controller ..................................................5
Setting up a Lens in Flair v7 with Nucleus-M
Motors .....................................................................................5
Appendix 1 Connector Pinouts summary ...................................... 10
EXT-1/EXT-2 ..............................................................10

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Chapter 1 Quick start
Safety
Do not use around flammable gas. All electrical equipment can
generate sparks that can ignite flammable gas.
Heads have powerful motors that can pinch, so take care not to
get your hands trapped in the head or cabling.
Keep the equipment dry. The system has not been made
weatherproof. Do not use with wet hands.
Keep cables tidy. Use cable ties to keep them out of harm’s way.
If you have a head with slip rings then make use of them; avoid
running any cables between the base and the rotating head or
camera.
Overview
Thank you for using the Nucleus-M Lens Motor for Mark Roberts
Motion Control (MRMC) equipment. Nucleus-M Motors are produced
by a company called Tilta. Their webpage is https://tilta.com/. They are
sold as a kit which includes battery charger, hand controller and required
cables. We refer to the hand controller as Tilta controller.

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Connecting the cables
Quad Tilta Box
Nucleus-M Lens Motors (Daisy
Chained - Both Lemo
connectors on the motors are
identical)
POWER 24V
NETWORK
Sync Datum/
Limit
Lens
Motors
5VDC
Out
24VDC
Out
D2A
Note
The motors can be plugged and unplugged from the box without
switching the power to the box off.

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Using the User Interface
Hand controller Wireless Control
The Tilta Hand controller can be used wirelessly to control the motors
when Flair is not in use or even during the calibration process. To set up
the wireless control of motors on the hand controller:
1. Disable the axis of interest in Flair before powering the Tilta
controller on.
2. Power on the controller by pressing the power button.
3. Press the MENU button.
4. Select Wireless and press the ENTER button.
Picture of Nucleus-M
Lens Motors
daisy-chained for zoom
and focus

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5. Select 2.4G and press the ENTER button.
6. Select the same Channel number as that on the motor and press the
ENTER button.
7. Press the MENU button again to exit the menu.
If you just setup the motor for focus, turning the focus pot should move
the motor. For IRIS, there’s a dial on the right of the Tilta controller.
Motors
In order to match the axis from Flair to motor numbers, the motor
numbers need to be adjusted accordingly.
Here is the list of axis and their corresponding motor numbers:
Iris → Motor No 1
Zoom → Motor No 2
Focus → Motor No 3
To assign the motor number on the motor itself:
Zoom
Focus
IRIS

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1. Press the MENU button.
2. Go to the motor number by pressing arrows.
3. Press the ENTER button.
4. Navigate through arrows and find the motor number you need.
5. Press the ENTER button to select.
6. Press the “Power” button to return to the main page.
Tilta Hand Controller
On the Tilta controller, corresponding motor number should be assigned
to the axis. In order to do that:
1. Press the MENU button.
2. Navigate to the Motor option and press the ENTER button.
3. Navigate to the axis you want to select: Iris, Zoom or Focus.
4. Navigate to the SYNC option and press the ENTER button
5. Navigate to the corresponding motor number.
6. Press the ENTER button and done.
Setting up a Lens in Flair v7 with Nucleus-M
Motors
1. Mount the Nucleus-M Lens Motors on the camera platform to
control focus and zoom. Use the Camera Platform for Bolt Family of
Robots Quick Start Guide for instructions on how to mount the
camera platform on the robot arm and to add the motors on to the
matte bars.
2. Plug the cables for motors. Note that the motors are daisy chained.
They are powered up when the quad box in the robot base is
powered up. Switch on the power to the robot.
3. They will each have a number on them, usually 2 or 3. These are the
port numbers on the network node in Flair. They are run from a
Quad Axis board that is a node on your normal Ethernet network.

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4. On each motor, press the Calibrate
button for 3 seconds and the motor will
find both end stops and set the internal
scale in Flair from 0-1 for the real travel
between end-stops.
Once the calibration is done,
4.1 Drive the lens to and in Flair,
check that Focus is at zero.
Similarly, check that closed focus is at 1. If the values are
interchanged or negative, disable the Focus axis and go to
Focus axis setup and reverse the motor direction.
4.2 Save the axis setup and exit.
4.3 Ensuring that the hand controller is off, enable the Focus axis.
4.4 Drive the focus axis to both ends until you notice a ‘jump’ in
Flair. (This jump is because of the motor correcting its
direction.)
5. In Flair, choose Setups Lens Setup and choose any Empty Lens.
6. Specify a Name for the lens.
7. Add a Focal Length for your lens.
8. Check that the Moves option is checked.
Calibrate
button

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9. You will be guided through the on-screen steps for focus calibration.
In step 1, click Disable Focus.
10. For step 2, using the Flair main screen, move the focus to , and
click Store Position.
11. For step 3, move the focus on lowest notch and enter the reading on
the lens in the box and select the units. Click Store Focus.
12. For step 4, move the lens to the mid-point mark in the lens travel
and enter the reading on the lens in the Focus distance box and
select the units. Click Store Focus.
13. For step 5, click Calibrate Focus.
14. For step 6, click Lens Focus Axis and in the Lens Focus Axis dialog
box, Minimum Limit will be set to 0and Maximum Limit to 1. If
not, type these in.

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15. Click Save and Exit.
16. In the Lens Setup dialog box, click Complete Calibration.
17. Scroll down to Extras, measure the X, Yand Z nodal offsets
according to the camera and lens positions and add these values in
the respective boxes. Add the values for other offsets that apply. For
more information on offsets, refer to the Flair 7.3 Manual.
18. Click Save and Apply. Close the Lens Setup dialog box.
19. Whenever an already calibrated lens is used, the Nucleus-M Lens
Motor must be placed where it was on the Focus and it must have
the Calibrate button pressed on it to find end-stops of that lens.
Then, when the lens setup is loaded and applied from Flair files, the
Focus calibration will be correct.

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Notes

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Appendix 1 Connector Pinouts summary
EXT-1/EXT-2
Connector ID: LEMO EEG.0B.307
Note that, 5V pin is an output of the motor and can be used to supply
RS422-UART converter. Also, since the communication is at TTL, the
wires should not be extended.
PIN SIGNAL Description Direction
1 7.2 to 24
Volts D C
Power to the Nucleus-M
motor and batteries
In/Out
2 7.2 to 24
Volts D C
Power to the Nucleus-M
motor and batteries
In/Out
3TTLRx TTLreceive In
4 +5.0V 5 Volt (200mA Max) In/Out
5 GROUND Common ground N/A
6 TTL Tx TTL transmit Out
7 GROUND Common ground N/A

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Notes

Mark Roberts Motion Control Ltd.
Unit 3, South East Studios, Blindley Heath, Surrey RH7 6JP
United Kingdom
Telephone: [phone]
[e-mail]
www.mrmoco.com