top bar

Difference between revisions of "Cobolt"

Line 11: Line 11:
 
The Cobolt laser controller controls compact solid-state lasers.
 
The Cobolt laser controller controls compact solid-state lasers.
  
Before adding this device adapter, confirm that you have serial communication with the laser controller by using a terminal. The serial port should be set at set at 19200 baud, no flow control, one stop bit, no parity, 8 data bits, delaybetweenChars 0 ms. The laser controller should respond to the following commands: l?, p?, hrs? (Laser on/off, power, hours). If you do not get a response then the Micro-Manager Cobolt device adapter will not work.
+
'''This driver had a major rewrite on April 10, 2020.'''
  
Newer controllers may use 115200 baud.
+
'''Max Power''' is still in the code to be backwards compatible with the old Cobolt driver, but it is deprecated and not used.
  
In the configuration wizard you will need to add one Cobolt object for every Cobolt laser you would like to control.
 
  
The following commands are available with this device adapter:
+
This new driver supports 115,200 baud as well as the older 19,200, with automatic serial port detection.
<ul>
+
 
    <li>Laser Power (Read/Write)
+
===The serial port===
    <li>Laser On/Off (Read/Write)
+
* 115,200 or 19200 baud,
    <li>Laser Status (Read only)
+
* no flow control,
    <li>Hours (Read only)
+
* one stop bit
    <li>Serial Number (Read only)
+
* no parity
    <li>Interlock state (Read only)
+
* 8 data bits
    <li>Current (Read only)
+
* delaybetweenChars 0 ms.
    <li>Errors (Read only)
+
 
</ul>
+
=== Device Properties===
 +
 
 +
The new driver supports constant current, constant power, and modulation modes. Also, you can select Analog or Digital modulation. The ability to enable/disable Autostart is now supported. There is also direct serial communication supported via '''Serial Command'''
 +
 
 +
[[File:Cobolt_properties.png]]
  
 
== Linux udev Rule ==
 
== Linux udev Rule ==

Revision as of 08:25, 10 April 2020

Summary:Cobolt Laser Controller
Author:Karl Bellve
License:LGPL
Platforms:All
Devices:[1]
Since Version:1.3.36
Example Config File:

The Cobolt laser controller controls compact solid-state lasers.

This driver had a major rewrite on April 10, 2020.

Max Power is still in the code to be backwards compatible with the old Cobolt driver, but it is deprecated and not used.


This new driver supports 115,200 baud as well as the older 19,200, with automatic serial port detection.

The serial port

  • 115,200 or 19200 baud,
  • no flow control,
  • one stop bit
  • no parity
  • 8 data bits
  • delaybetweenChars 0 ms.

Device Properties

The new driver supports constant current, constant power, and modulation modes. Also, you can select Analog or Digital modulation. The ability to enable/disable Autostart is now supported. There is also direct serial communication supported via Serial Command

Cobolt properties.png

Linux udev Rule

As Root, create a file named /etc/udev/rules.d/99-Cobolt.rules with the following context:

# allow users to claim the device
SUBSYSTEMS=="usb", ATTRS{product}=="Cobolt Laser Driver MLD",  ATTRS{idVendor}=="25dc", MODE="0660", GROUP="users", SYMLINK+="ACM%n"

Notes

Note
Lasers will automatically be shut off when Micro-Manager closes but power remains on
Note
Lasers will ignore the power setting for a few minutes while they start up. Reset after warm up is over
Note
This driver works best with laser controller firmware version 13


--Karl Bellve, Biomedical Imaging Group, University of Massachusetts 15:51, 5 June 2009 (UTC)




A useful device for control of additional laser shutter can be an Arduino board; a way to integrate hardware and software may be build a GUI panel to control easily laser power and shutter devices:

© Micro-Manager : Vale Lab, UCSF 2006-2011 | All Rights Reserved | Contact