WHAT'S NEW

Web Site Changes - This is where we'll announce the most recent additions to our web site. If you've visited us before and want to know what's changed, take a look here first.

Laser Photoheads

The laser photohead and reflector shown with optional stands and precision aligner is shown above.  Finally, a retroreflective photohead with 100 foot range and 0.001 second accuracy!!!  A pulsed, Class II laser is used (they are quite safe - you would have to stare directly into the laser to injure your eyes) yields a pencil thin beam of visible red light that you can see as it hits the reflector.   A narrow band optical filter is tuned to only allow the laser light through to the receiver - minimizing the effects of bright sunlight.  There is a stainless steel shroud that keeps rain away from the lens and provides a rough guide for alignment.

The optional stands and precision aligner facilitate alignment with the reflector.  The precision aligner uses ultra fine threads on its two adjusters that allows adjustments from +/- 4 arc-seconds to 4 degrees.  The mounts are designed such that the center posts can hold 5 and/or 10 lb. barbell weights to keep the stands firmly attached to ground even in heavy winds! 

Pricing

ChronoMode Firmware

The timer internal firmware allowing very flexible use of JACircuits timers along with a laptop computer is now available.  Programming a PC to handle all of the different possible applications for multiple photoheads will be far easier and more flexible than programming each new application in firmware.

Chrono Mode uses the Sequential mode and adds extra data to the Computer port only (does not change output to the printer or display port output). There is a master time stamp that is 6 digits, xxx.xxx seconds since startup.

Here's a description of the new Chrono Mode:

When a valid start signal is received (either by photohead or switch), send a specifically labeled string and the master time stamp.

When a valid finish signal is received (either by photohead or switch), send a specifically labeled string and the master time stamp.

When a valid 'Aux1' signal is received by photohead, send a specifically labeled string and the master time stamp.

When a valid 'Aux2' signal is received by photohead, send a specifically labeled string and the master time stamp.

When reset stop is received by switch, send a string starting with 80h and the 6 '0's ,CR,LF (no change from original firmware).

When reset start is received by switch, send a specifically labeled string and the master time stamp.

When a timer initialize signal is received by switch (or on power up), send a boot string

When there is a valid finish, you will still get the relative time (difference between start and finish time stamps) with 80h in front and CR,LF behind, this will still be sent to the display and printer (no change from original).

The above data will give a PC software program everything it needs to calculate everything that was described in all of the previously described modes, and more. One could lay out a practice course and loop back to give multiple splits per run, as long as the PC software can handle it, the timer will do its job.

One could even do ProSolo type events with 2 timers and an external tree (all controlled by a PC of course). You could use start and finish for the normal course, use Aux1 to sense the green light, and maybe throw in Aux2 at the 60' point. You could calculate reaction time, 60' time, total time, and winner (just think, people won't have to wait for Howard to pound on his calculator to see who wins!).

Pricing

Contact Information:

Telephone:

(734) 665-3322 (after 7:00 PM on weekdays)

 

Fax:

(815) 572-8240

 

Postal address:

JACircuits, 3911 Edmonton Court, Ann Arbor, MI 48103-6306

 

E-mail:

General Information: info@jacircuits.com
Webmaster: webmaster@jacircuits.com

Send mail to webmaster@jacircuits.com with questions or comments about this web site.
Copyright © 1996 JACircuits Autocross Timing Systems
Last modified: March 02, 2010