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Last post by FatSebastian « Fri Feb 24, 2012 12:12 pm
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by gpraceman » Sat Jan 28, 2012 4:56 pm » in News and Announcements

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Last post by FatSebastian
Fri Feb 24, 2012 12:12 pm
How to add a YouTube video to a post

Last post by gpraceman « Thu Apr 23, 2009 8:28 am
Posted in News and Announcements

by gpraceman » Thu Apr 23, 2009 8:28 am » in News and Announcements

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342564 Views

Last post by gpraceman
Thu Apr 23, 2009 8:28 am
How to add a photo to a post

Last post by Speedster « Wed Nov 14, 2018 8:13 am
Posted in News and Announcements
Replies: 23
by gpraceman » Sat Jul 05, 2003 11:09 am » in News and Announcements
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Last post by Speedster
Wed Nov 14, 2018 8:13 am

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Yet another Arduino based track timer...

Last post by exoray « Wed Feb 05, 2025 7:00 pm
Replies: 97
by Indy » Sat Jun 11, 2011 2:13 pm
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97 Replies

1726746 Views

Last post by exoray
Wed Feb 05, 2025 7:00 pm
USB to Serial Adapters - macOS

Last post by gpraceman « Fri Mar 08, 2019 3:05 pm

by gpraceman » Fri Mar 08, 2019 3:05 pm

0 Replies

98977 Views

Last post by gpraceman
Fri Mar 08, 2019 3:05 pm
USB to Serial Adapters - Windows

Last post by bstockton « Mon Jan 21, 2019 9:23 am
Replies: 28
by gpraceman » Mon Feb 12, 2007 7:50 pm
1

2
28 Replies

35311 Views

Last post by bstockton
Mon Jan 21, 2019 9:23 am
Electronic Interference Prevention

Last post by gpraceman « Thu Feb 16, 2012 5:35 pm
Replies: 13
by gpraceman » Mon Feb 12, 2007 7:58 pm

13 Replies

18790 Views

Last post by gpraceman
Thu Feb 16, 2012 5:35 pm
Arduino PDT Build

Last post by DOD996 « Mon Feb 06, 2023 5:42 am

by DOD996 » Mon Feb 06, 2023 5:42 am

0 Replies

89942 Views

Last post by DOD996
Mon Feb 06, 2023 5:42 am
Cheap-ish timer (getting more polished)

Last post by jpswensen « Tue Mar 29, 2022 11:29 pm
Replies: 2
by jpswensen » Thu Mar 15, 2018 9:27 am

2 Replies

12470 Views

Last post by jpswensen
Tue Mar 29, 2022 11:29 pm
Lane Brain Upgrade Add-on

Last post by billv « Fri Jan 29, 2021 8:28 am

by billv » Fri Jan 29, 2021 8:28 am

0 Replies

94884 Views

Last post by billv
Fri Jan 29, 2021 8:28 am
www.BillvsDerbyTimers.weebly.com

Last post by gpraceman « Mon Jul 30, 2018 9:58 pm
Replies: 1
by billv » Mon Jul 30, 2018 3:52 pm

1 Replies

11036 Views

Last post by gpraceman
Mon Jul 30, 2018 9:58 pm
Need help with miscjunk.org timer!

Last post by Vitamin K « Sat Jun 23, 2018 7:48 pm
Replies: 3
by Artanis » Sat Jun 23, 2018 8:09 am

3 Replies

12757 Views

Last post by Vitamin K
Sat Jun 23, 2018 7:48 pm
Affordable track timer design

Last post by Scoremaker « Tue Apr 04, 2017 10:21 am
Replies: 2
by Scoremaker » Sat Apr 01, 2017 5:57 pm

2 Replies

12485 Views

Last post by Scoremaker
Tue Apr 04, 2017 10:21 am
Lasers as better finish-line emitters?

Last post by MaxV « Sat Mar 18, 2017 2:52 pm
Replies: 3
by Vitamin K » Fri Mar 17, 2017 3:04 pm

3 Replies

17811 Views

Last post by MaxV
Sat Mar 18, 2017 2:52 pm
Arduino upgrade of Microwizard P2XL

Last post by ironband « Thu Mar 02, 2017 11:08 am
Replies: 15
by ironband » Wed Feb 15, 2017 11:03 pm
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15 Replies

29620 Views

Last post by ironband
Thu Mar 02, 2017 11:08 am
Best Timer for a DIY Engineer

Last post by sldwaa « Wed Apr 06, 2016 5:14 am
Replies: 3
by sldwaa » Mon Mar 07, 2016 2:45 pm

3 Replies

14004 Views

Last post by sldwaa
Wed Apr 06, 2016 5:14 am
Wifi enabled timer?

Last post by Vitamin K « Mon Dec 01, 2014 9:57 pm
Replies: 4
by Vitamin K » Mon Dec 01, 2014 8:14 am

4 Replies

15159 Views

Last post by Vitamin K
Mon Dec 01, 2014 9:57 pm
A Different Approach to Multi-Point Lane Timings

Last post by Stan Pope « Sun Sep 28, 2014 8:44 pm
Replies: 5
by Stan Pope » Thu Sep 18, 2014 9:45 pm

5 Replies

16870 Views

Last post by Stan Pope
Sun Sep 28, 2014 8:44 pm
Finish Line LEDS

Last post by resullivan « Tue Mar 04, 2014 6:35 am
Replies: 6
by Pack200SC » Thu Feb 27, 2014 6:11 pm

6 Replies

17584 Views

Last post by resullivan
Tue Mar 04, 2014 6:35 am
State of the art in timers?

Last post by SlartyBartFast « Wed Feb 12, 2014 1:53 pm
Replies: 6
by SlartyBartFast » Tue Feb 04, 2014 3:09 pm

6 Replies

17865 Views

Last post by SlartyBartFast
Wed Feb 12, 2014 1:53 pm
Phototransistor sensitivity question

Last post by sirma « Fri Jun 21, 2013 2:35 pm
Replies: 12
by steve547 » Tue Feb 17, 2009 12:13 pm

12 Replies

26336 Views

Last post by sirma
Fri Jun 21, 2013 2:35 pm
Calculate car speed.

Last post by gpraceman « Fri Feb 08, 2013 1:21 pm
Replies: 29
by SlartyBartFast » Fri Nov 28, 2008 9:03 pm
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2
29 Replies

56956 Views

Last post by gpraceman
Fri Feb 08, 2013 1:21 pm
10 Ways to Destroy an Arduino

Last post by gpraceman « Mon Dec 10, 2012 5:22 pm

by gpraceman » Mon Dec 10, 2012 5:22 pm

0 Replies

22471 Views

Last post by gpraceman
Mon Dec 10, 2012 5:22 pm
RaceMaster 4 DIY from Bosworth??? Anyone have success build

Last post by jgedmin81 « Sat Feb 18, 2012 5:57 pm
Replies: 10
by jgedmin81 » Wed Oct 12, 2011 3:52 pm

10 Replies

19655 Views

Last post by jgedmin81
Sat Feb 18, 2012 5:57 pm
Cheap/Inexpensive timing circuit?

Last post by FatSebastian « Fri Feb 17, 2012 8:54 pm
Replies: 9
by AJMD » Mon Feb 14, 2011 9:38 am

9 Replies

21428 Views

Last post by FatSebastian
Fri Feb 17, 2012 8:54 pm
Phototransistor location

Last post by msurebel « Sat Jan 21, 2012 10:27 pm

by msurebel » Sat Jan 21, 2012 10:27 pm

0 Replies

23357 Views

Last post by msurebel
Sat Jan 21, 2012 10:27 pm
Swan-tech?

Last post by Scubersteve « Thu Nov 10, 2011 3:14 pm
Replies: 11
by littleZracer » Sat Feb 19, 2011 1:51 pm

11 Replies

19829 Views

Last post by Scubersteve
Thu Nov 10, 2011 3:14 pm
Possible Finish Line Controller?

Last post by Duane « Mon Jan 31, 2011 10:43 am
Replies: 15
by SlartyBartFast » Wed Oct 03, 2007 9:40 am
1

2
15 Replies

32130 Views

Last post by Duane
Mon Jan 31, 2011 10:43 am
Wireless Timer to Computer Connection

Last post by SlartyBartFast « Thu Oct 14, 2010 2:14 pm

by SlartyBartFast » Thu Oct 14, 2010 2:14 pm

0 Replies

15080 Views

Last post by SlartyBartFast
Thu Oct 14, 2010 2:14 pm
Help need with a Derbytimer.com timer

Last post by PeteA « Fri Mar 12, 2010 7:15 am
Replies: 17
by PeteA » Thu Feb 11, 2010 12:11 pm
1

2
17 Replies

29427 Views

Last post by PeteA
Fri Mar 12, 2010 7:15 am
DerbyTimer.com

Last post by M Webb « Wed Jul 01, 2009 4:52 pm
Replies: 2
by M Webb » Wed Jul 01, 2009 2:27 am

2 Replies

10381 Views

Last post by M Webb
Wed Jul 01, 2009 4:52 pm
Simple finish line circuit help

Last post by MT Pockets « Fri Mar 27, 2009 10:24 am
Replies: 14
by MT Pockets » Wed Feb 04, 2009 7:28 am

14 Replies

24925 Views

Last post by MT Pockets
Fri Mar 27, 2009 10:24 am
How *should* timers respond to ties?

Last post by SlartyBartFast « Thu Feb 19, 2009 8:16 am
Replies: 5
by steve547 » Sat Feb 14, 2009 12:36 pm

5 Replies

13709 Views

Last post by SlartyBartFast
Thu Feb 19, 2009 8:16 am
Help... DerbyTimer GPRM interface any one using it ?

Last post by Andy_Potvin « Wed Feb 04, 2009 4:45 am
Replies: 13
by Andy_Potvin » Sat Jan 19, 2008 4:38 pm

13 Replies

22950 Views

Last post by Andy_Potvin
Wed Feb 04, 2009 4:45 am
Building a timer...

Last post by Pinewood Daddy « Thu Jan 29, 2009 7:11 am
Replies: 5
by SlartyBartFast » Thu Jan 22, 2009 10:42 pm

5 Replies

17847 Views

Last post by Pinewood Daddy
Thu Jan 29, 2009 7:11 am
Another crazy find... Lane indicators too small?

Last post by gpraceman « Tue Jan 27, 2009 8:59 am
Replies: 1
by SlartyBartFast » Tue Jan 27, 2009 8:01 am

1 Replies

10026 Views

Last post by gpraceman
Tue Jan 27, 2009 8:59 am
Serial Port Systems

Last post by quadad « Thu Nov 06, 2008 3:50 pm
Replies: 2
by Kurt Wylde » Thu Nov 06, 2008 3:01 pm

2 Replies

11706 Views

Last post by quadad
Thu Nov 06, 2008 3:50 pm
New Electronics Idea...

Last post by altontoth « Tue Jul 01, 2008 11:34 pm
Replies: 3
by SlartyBartFast » Tue Apr 15, 2008 10:35 am

3 Replies

12643 Views

Last post by altontoth
Tue Jul 01, 2008 11:34 pm
Attached Sensors

Last post by volzjr « Thu Feb 07, 2008 11:59 am
Replies: 1
by dna1990 » Wed Feb 06, 2008 12:55 pm

1 Replies

10669 Views

Last post by volzjr
Thu Feb 07, 2008 11:59 am
Homemade Timer - Debounce

Last post by knavekid « Mon Feb 04, 2008 2:52 pm
Replies: 2
by dna1990 » Sun Feb 03, 2008 11:09 am

2 Replies

13172 Views

Last post by knavekid
Mon Feb 04, 2008 2:52 pm
Timer project

Last post by rangercmdr « Sun Feb 03, 2008 9:13 pm
Replies: 3
by reddriver » Sun Feb 03, 2008 4:58 pm

3 Replies

12744 Views

Last post by rangercmdr
Sun Feb 03, 2008 9:13 pm
New to electronic timers

Last post by Pinewood Daddy « Tue Jan 08, 2008 1:04 pm
Replies: 9
by fidoracing » Thu Dec 06, 2007 9:07 am

9 Replies

20862 Views

Last post by Pinewood Daddy
Tue Jan 08, 2008 1:04 pm
GPRM v7 No More Parallel Port

Last post by cleverpig « Thu Dec 13, 2007 5:30 pm
Replies: 2
by Kurt Wylde » Fri Sep 07, 2007 3:42 pm

2 Replies

12905 Views

Last post by cleverpig
Thu Dec 13, 2007 5:30 pm
Need to build a cheap finish line

Last post by SlartyBartFast « Wed Oct 03, 2007 7:48 am
Replies: 5
by CubScoutsDad » Mon Sep 24, 2007 12:57 pm

5 Replies

15835 Views

Last post by SlartyBartFast
Wed Oct 03, 2007 7:48 am
IR leds vers Halogen light bulbs

Last post by Pinewood Daddy « Wed Aug 22, 2007 10:23 am
Replies: 12
by Doug-in-the-woods » Fri Jun 22, 2007 10:31 pm

12 Replies

26615 Views

Last post by Pinewood Daddy
Wed Aug 22, 2007 10:23 am
Digital timer for $35 per lane

Last post by gpraceman « Mon Apr 09, 2007 7:39 am
Replies: 3
by Doug-in-the-woods » Mon Apr 09, 2007 6:53 am

3 Replies

13284 Views

Last post by gpraceman
Mon Apr 09, 2007 7:39 am
Parallel Port Connector Numbering

Last post by SuperDave « Tue Jan 23, 2007 6:03 pm
Replies: 2
by Kurt Wylde » Thu Jan 04, 2007 9:27 pm

2 Replies

12250 Views

Last post by SuperDave
Tue Jan 23, 2007 6:03 pm
How Do I test the Start Sensor Circuit

Last post by gpraceman « Sun Dec 17, 2006 7:45 pm
Replies: 7
by Kurt Wylde » Sat Dec 16, 2006 5:31 pm

7 Replies

17584 Views

Last post by gpraceman
Sun Dec 17, 2006 7:45 pm
Quad Comparator Pins

Last post by rangercmdr « Mon Nov 27, 2006 4:37 am
Replies: 7
by Kurt Wylde » Mon Nov 20, 2006 9:49 am

7 Replies

17235 Views

Last post by rangercmdr
Mon Nov 27, 2006 4:37 am
Which sensor schematic to build

Last post by John Shreffler « Thu May 11, 2006 7:53 pm
Replies: 10
by Wing Nut » Wed Apr 19, 2006 3:55 pm

10 Replies

22404 Views

Last post by John Shreffler
Thu May 11, 2006 7:53 pm
Pack 471 timer with limited sensor range

Last post by Don Kern « Tue Apr 11, 2006 8:22 pm
Replies: 2
by Don Kern » Wed Mar 29, 2006 8:14 pm

2 Replies

12704 Views

Last post by Don Kern
Tue Apr 11, 2006 8:22 pm
Simplified Least Expensive Timer(with images)

Last post by Cory « Mon Feb 13, 2006 1:30 pm
Replies: 1
by Pack11SanDiego » Mon Feb 13, 2006 1:04 pm

1 Replies

12252 Views

Last post by Cory
Mon Feb 13, 2006 1:30 pm
Timer Schematic

Last post by John Shreffler « Wed Feb 01, 2006 7:04 pm
Replies: 4
by daveppeters » Sat Nov 27, 2004 2:10 pm

4 Replies

17013 Views

Last post by John Shreffler
Wed Feb 01, 2006 7:04 pm

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