Search found 3 matches
- Tue Apr 25, 2006 9:45 am
- Forum: Do-It-Yourself
- Topic: Which sensor schematic to build
- Replies: 10
- Views: 17802
Re: Which sensor schematic to build
That's a great looking finish line! :D Gives me some ideas, however our track lays flat on the floor, and the bottom of the bridge where the sensors are mounted would make it have a hump there. Although it might not be a bad idea to raise the whole track off the floor a few inches because when the k...
- Mon Apr 24, 2006 10:09 am
- Forum: Do-It-Yourself
- Topic: Which sensor schematic to build
- Replies: 10
- Views: 17802
Re: Which sensor schematic to build
Sounds like the comparators may be the way to go. Both schematics using comparators use 2 sets of resistors for the reference voltage going to the comparators, would there be any problem with using 1 set to provide reference voltage to all 5 inputs on both the comparators ( 4 finish lines and the st...
- Wed Apr 19, 2006 3:55 pm
- Forum: Do-It-Yourself
- Topic: Which sensor schematic to build
- Replies: 10
- Views: 17802
Which sensor schematic to build
It's time to upgrade our church's Awana Grand Prix track to an optical finish line, at this point I like the looks of the GPRM software and would like to build a parallel port finish line. So far I've found the 4 lane finish line detector based on pack 471 at GrandPrix Race Central http://grandprix-...