Do-It-Yourself

New Topic

57 topics

Announcements

Replies

Views

Last post

Posting Tips

Last post by FatSebastian « Fri Feb 24, 2012 12:12 pm
Posted in News and Announcements
Replies: 1
by gpraceman » Sat Jan 28, 2012 4:56 pm » in News and Announcements

1 Replies

338572 Views

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

0 Replies

341946 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
1

2
23 Replies

668482 Views

Last post by Speedster
Wed Nov 14, 2018 8:13 am

Topics

Replies

Views

Last post

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
1

…

3

4

5

6

7
97 Replies

1726434 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

98952 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

35254 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

18769 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

89933 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

12428 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

94870 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

11027 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

12746 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

12470 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

17796 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
1

2
15 Replies

29572 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

13984 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

15131 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

16849 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

17572 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

17829 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

26322 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
1

2
29 Replies

56837 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

22466 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

19644 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

21408 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

23338 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

19820 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

32097 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

15074 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

29407 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

10367 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

24900 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

13692 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

22930 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

17828 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

10015 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

11693 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

12627 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

10657 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

13155 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

12732 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

20832 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

12897 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

15824 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

26595 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

13279 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

12243 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

17577 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

17224 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

22384 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

12685 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

12243 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

16986 Views

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

New Topic

57 topics

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum