Portable Optical Tweezers Kit
Chapter 8: Control via Game Controller
Rev B, February 15, 2022
Page 83
Chapter 8 Control via Game Controller
The Thorlabs Kinesis Software includes the possibility of controlling various components
via external input devices. For the Optical Tweezer kit, this allows to drive the KDC101
Servo Motor Controllers and in turn the sample stage movement via a game controller.
Please note that no game controller is provided with the kit. In the following, the required
settings are explained. They have been tested with a Logitech F310 controller under
Windows 10. While the feature could work with similar devices, we do not guarantee this.
1. Connect both KDC101 controllers as well as the game controller to your PC via
USB, then start the Kinesis software.
2. From the main menu of the Kinesis software, choose
File
->
Input Devices
.
3. In the upper right corner of the window that has opened, select your controller
from the dropdown menu.
4. Optionally, you can turn the laser on/off via the game controller. To do this,
connect your KLD101 to the PC via USB, select its serial number in the
Target
dropdown menu behind
Button A
and choose
Laser On
in the
Action
dropdown
menu. Do the same for
Button B
and select
Laser Off
as Action.
5. On the right side of the same window, select the
Target
dropdown menu of
Left
Analog Y
, then choose the serial number of the KDC101 that is responsible for a
movement of the camera image on the screen in vertical direction. Choose the
other KDC101 in the
Target
dropdown menu of
Left Analog X
.
6. In the
Action
dropdown menus of both
Left Analog Y
and
Left Analog X
, select
Move Continuous
. The settings should now look similar to Figure 67.
7. Click on the
Calibrate
-Button next to
Left Analog Y
. In the window that opens,
check the box in front of
Use Custom Banding Values
(see Figure 68).
8. In the table appearing below, you can now customize the movement speed of the
stage in relation to the displacement of the analog stick. This is done by pairing
a lower boundary of the joystick displacement with a corresponding movement
speed. Such value pairs can be created by clicking the
Add
button on the right
side of the table. If the joystick displacement is larger than the boundary, the
stage will move at that speed until the displacement of the next higher boundary
is reached.
The velocity is expressed as a percentage of the maximum speed of the sample stage
motors, which is about 2.5 mm/s. We recommend the setup displayed in Figure 68 for both
axes (Note the checked
Invert Sense
checkbox for the Y-axis). Depending on the controller
and the intended experiment, other values may be more suitable.
Before using the game controller, the KDC101 controllers should be homed. To do this,
press the
Home
Button for both controllers in Kinesis (see Figure 69). After homing, the
stage will be in one corner of its travel range and should be moved in positive direction for
both axes to center the sample under the objective.
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