Hardware.

Description:

The apparatus consists of a 6" long 1/8" ID copper pipe held in a vertical position.  This pipe is mounted with an LED-Photo Cell  pair that detects when small stainless steel beads, that are inserted at its top, fall inside the pipe. The circuit signals the event to a computer through a standard PC parallel port.
There are 2 versions of the "Bead Timer":

Schematics:

BeadTimerSchematics.bmp(26kb BitMaP image)

Software.

Downloads:

Executable Files

Initialization Files

System Files

The following files to be copied to your "Windows/System32" folder if your system requires them.

Menu Options:

Defaults Options:

Sample Defaults File("BeadTimerDFTs.ini" is a word processor editable plain text file).
Editing this file is the only way to change some of this software features:

Cheater Checking Enabled/Disabled:
    To enable the checking type the word "True" after the equal sign in the defaults file line: "Cheater Checking=True"
    To disable the checking type the word "False" after the equal sign in the defaults file line: "Cheater Checking=False"
Cheater Message:
    The message sent to the suspected cheater can be edited at the line: "Cheater Message=Inserting several beads at a time is not permitted"

2006 December 1
Last update: 2008 October 23