Search found 17 matches
- Thu Nov 06, 2008 3:01 pm
- Forum: Do-It-Yourself
- Topic: Serial Port Systems
- Replies: 2
- Views: 8014
Serial Port Systems
I would like sources/opinions on a Serial Port timer to work with GPRM. I built the parallel system that is in the GP Race Central site (used with GPRM v6), so I assume I can still use the start switch and sensors. http://derbytimer.com/diy/ has stuff that would be a good match, but they have all be...
- Thu Sep 25, 2008 11:20 am
- Forum: Do-It-Yourself
- Topic: Retrofit Aluminum Plating
- Replies: 1
- Views: 8188
Retrofit Aluminum Plating
We have an old wooden track that needs to be refurbished.
Has anyone used the Beta Crafts Aluminum plating? http://www.betacrafts.com/catalog/produ ... ucts_id=61
I would like to find instructions on how it is installed, especially the joining of the track lengths.
Thanks.
Has anyone used the Beta Crafts Aluminum plating? http://www.betacrafts.com/catalog/produ ... ucts_id=61
I would like to find instructions on how it is installed, especially the joining of the track lengths.
Thanks.
- Fri Sep 07, 2007 3:42 pm
- Forum: Do-It-Yourself
- Topic: GPRM v7 No More Parallel Port
- Replies: 2
- Views: 9226
GPRM v7 No More Parallel Port
Last year I built the timer with the plans from this site. I believe it uses the parallel port. If I upgrade to v7, is there some way to convert the timer to a serial port?
- Mon Jan 22, 2007 7:22 pm
- Forum: General Coordinator Topics
- Topic: Thanks Derby Talk and GPRM!
- Replies: 2
- Views: 5648
Thanks Derby Talk and GPRM!
Hello Derby Talk Readers Last year I bought GPRM to manage the roster and generate schedules for our pack pinewood derby (my first). We were using Mk I eyeballs to determine results. This year I built the circuit from this website. I made a testing rig, and when I ran the hardware test from GPRM and...
- Thu Jan 04, 2007 9:27 pm
- Forum: Do-It-Yourself
- Topic: Parallel Port Connector Numbering
- Replies: 2
- Views: 8655
Parallel Port Connector Numbering
Hello
Could someone please explain the pin numbering of a Parallel Port Connector?
Thank you.
Could someone please explain the pin numbering of a Parallel Port Connector?
Thank you.
- Sun Dec 17, 2006 3:17 pm
- Forum: Do-It-Yourself
- Topic: How Do I test the Start Sensor Circuit
- Replies: 7
- Views: 13352
Re: How Do I test the Start Sensor Circuit
I have removed all the LEDs from the circuit, and it is not connected to the parallel port; it looks just like the picture in the first post. If I measure the voltage on the left Quad Comparator, between pin 12 (ground) and pin 2 (Output 1) the meter reads .1 volt. Is that a problem? When I attach t...
- Sun Dec 17, 2006 12:29 am
- Forum: Do-It-Yourself
- Topic: How Do I test the Start Sensor Circuit
- Replies: 7
- Views: 13352
Re: How Do I test the Start Sensor Circuit
A more specific question may help me - The instructions from the website: To test each comparator output, one at a time, take a small length of wire and connect from the lane/start input of the quad comparator (pins 4, 6, 8, and 10) to ground. The holes at the back of the wire terminals are good for...
- Sat Dec 16, 2006 7:44 pm
- Forum: Do-It-Yourself
- Topic: How Do I test the Start Sensor Circuit
- Replies: 7
- Views: 13352
Re: How Do I test the Start Sensor Circuit
I will study that info you posted NealOnWheels and see if I can make sense of it. The plans I am using are here: http://grandprix-race-central.com/modules.php?name=Content&pa=showpage&pid=7 I just hooked up the "optional" LEDs between E25-H25, E23-H23, E29-H29, E27-H27, E31-H31. Th...
- Sat Dec 16, 2006 5:31 pm
- Forum: Do-It-Yourself
- Topic: How Do I test the Start Sensor Circuit
- Replies: 7
- Views: 13352
How Do I test the Start Sensor Circuit
Hello I am building the circuit on this site. I am now ready to "Test the Quad Comparator Outputs". My feeble brain needs a more detailed description of doing this. Pic of circuit: http://grandprix-race-central.com/images/electronics/ss_board2.jpg The instructions state to test for voltage...
- Sun Nov 26, 2006 11:06 am
- Forum: Do-It-Yourself
- Topic: Quad Comparator Pins
- Replies: 7
- Views: 13139
Re: Quad Comparator Pins
Thank you Mr. Pope.
- Sat Nov 25, 2006 7:58 pm
- Forum: Software
- Topic: PWD car design software
- Replies: 11
- Views: 15652
Re: PWD car design software
I am also searching for M Lastufka's software; can't find a current site with his articles or apps.
Thanks.
Thanks.
- Sat Nov 25, 2006 7:44 pm
- Forum: Do-It-Yourself
- Topic: Quad Comparator Pins
- Replies: 7
- Views: 13139
Re: Quad Comparator Pins
Hello again,
Here is a picture of the chip in question:
Any help determining pin 1 is appreciated.
Thank you.
Here is a picture of the chip in question:
Any help determining pin 1 is appreciated.
Thank you.
- Mon Nov 20, 2006 9:49 am
- Forum: Do-It-Yourself
- Topic: Quad Comparator Pins
- Replies: 7
- Views: 13139
Quad Comparator Pins
Hello
How can I determine the pin numbering on these chips? The packaging didn't explain anything. I am building the circuit from the plans on this website, 4 lane version.
Thanks!
How can I determine the pin numbering on these chips? The packaging didn't explain anything. I am building the circuit from the plans on this website, 4 lane version.
Thanks!
- Sun Nov 12, 2006 7:30 pm
- Forum: Other
- Topic: Multimeter Question
- Replies: 1
- Views: 8592
Multimeter Question
Hello It's been 25 years since I held a soldering iron; I have some questions regarding power supply construction and using the multimeter. I assembled the power supply shown in the Content portion of the website, using a 12 volt transformer. When I put the meter on the transformer leads, the meter ...
- Mon Jul 03, 2006 12:24 pm
- Forum: Raingutter Regatta
- Topic: Regatta and Grand Prix Race Manager
- Replies: 0
- Views: 14127
Regatta and Grand Prix Race Manager
Hello We will have ~30 cubs on a 2 lane regatta track. When I generate a Perfect-N chart, it creates 60 heats. I would prefer fewer heats due to time constraints, and am now thinking about double-elimination. I don't believe Grand Prix Race Manager supports double elimination. Is anyone aware of a t...