How to Use the Slide Stirrer
written by Rachel Courtland
Lab Home --
Experimental facilities --
Running the Slide Stirrer
The slide stirrer is underneath Grabber and is ideal for stirring
slides with air bubbles in them. You can clip your slides on with
butterfly paperclips. Make sure that the glued side is facing out (you
can break slides if it is not).
To run the stirrer, you must be logged on as administrator. There are two
stepper motor control programs, one which
allows only for continuous motion. The other one is more programmable,
and you can get to it though the shortcut on desktop marked Slide
Stirrer. The following steps will make slide flip over and
over again, sitting 5 minutes on each side.
For Operating System, click on NT/2000
Under the Motor 2 column, type in 7200 as the number of discrete
steps and click Add Command. This orders the motor to turn 180 degrees.
Under Delay Settings, type in 300 and click Add Delay. This orders
the motor to wait five minutes before performing the next task.
Click on the Loop Continuous box in the lower right hand corner.
Click Start Routine to start the stirrer.
Hitting Stop Routine resets everything (this is good if you need to run
the program for a little while to get the bar vertical).
Occasionally Grabber may need to be restarted to get the motor to work.
Some Notes on the Stepper Motor
The stepper motor for the slide stirrer and the program used to run it are
from StepperControl (see vendors list).
It is a NEMA23DSM with 0.025
degrees per step.
If you hold the controller card with the chip
up, the wiring left to right is red, blue and white stripe, blue, white,
black and white stripe, black.