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DIY Wireless Race Timing System
Watch!
Note you are responsible for checking with your country's regulations on use of these radios if you try this project. Do your homework.
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Video info
- Date Posted
- Jan 10, 2010 at 13:31Jan 10, 2010
- Category
- All Mountain/Enduro/DH
- Location
-
Amboy, Washington, United States
38 Comments
- + 1
Thanks for the comment. The issue with patenting this would be the FCC or whatever the Goverment regulatory agency is in whatever country it was being used. In the US by using the call signal you bypass the restrictions of using this band for remote control applications. However it would be a good idea to patent the "improvement" to the radio to add a relay to the call function and a jack for plugging in external devices. I will have to do some more research to see if it would be patentable. One additional cool factor is because I am not using the radio you can call back up tot the top of the run and let the next rider know it is time to rip!
- + 1
ahhhhh i see what you meen, but surely freelap use some type of radio signal to send the signal... yeh its good that you can use the radio as a radio lol but its the coolest radio ever!!! .... let me know if you get anywaere with it ( i want discount!!! lol )
- + 1
freelap work by creating a force field aroung the timing pole, when you exit the force field at the top of course, it starts the watch and when you enter the force feild at the bottom of the course, it stops the watch.
- + 1
if you wanted to get around having to wait for rider 1 to finish, could you just have two sets of your system and get them to run over alternating start/ finish mats? it may take an extra marshall to coordinate things, but would be easier
- + 1
Yea this is one option almost like having two lanes.
I also have though about building an interface to the serial port on a lap top so it can have an unlimited number of timers going at once.
I think for now I will keep it simple and use on short 1-2 min mini races or for training. I have developed another program that runs on the lap top for timing bigger races with more riders.
- + 1
Jrager- very cool little system. I'm going to try to build one of these for DH skateboard race timing. You said in the video that you used RS232 5V relay connections, but those sure look like RJ11 phone connectors. Am I right about that?
It would be really cool if you could post a picture of the inside of that FRS radio so we can see how you wired it. I reckon I'll ruin a radio or two trying to figure it out. Do the Switch leads go to the call button, and the timer leads go to the vibra motor? Very cool indeed.
It would be really cool if you could post a picture of the inside of that FRS radio so we can see how you wired it. I reckon I'll ruin a radio or two trying to figure it out. Do the Switch leads go to the call button, and the timer leads go to the vibra motor? Very cool indeed.
- + 1
Nice idea!
I do have a concern, though. Do you feel like the delay between activating the call and the actual call/chronometer start is consistent? I worry it's not, so the whole thing would have a resolution of about 0.5 secs (the error margin).
What do you say?
I think this is quite obvious on the last test in your video, when the stop has a shorter delay than the start.
I do have a concern, though. Do you feel like the delay between activating the call and the actual call/chronometer start is consistent? I worry it's not, so the whole thing would have a resolution of about 0.5 secs (the error margin).
What do you say?
I think this is quite obvious on the last test in your video, when the stop has a shorter delay than the start.
- + 2
I assume you had to do some soldering on those terminals?
Damn I wish I'd taken electronics instead of ceramics. The girls were a lot prettier in ceramics...
Damn I wish I'd taken electronics instead of ceramics. The girls were a lot prettier in ceramics...
- + 1
Cost is $70 and you are not restricted by the number of watches you have. Freelap cost is $400 + 200 for each extra watch.
- + 1
very good point, i`ve got a freelap set up and they are quite expensive. puts people off buying the watches. nice work fella.
- + 1
Hey man, this project looks out of space cool. I want to make this timing system for myself, but don't know what trip switches to get for this. What's the model of ones you're using and wouldnt it be that when your arms or handle bars hit the laser beam the radio rings to the other radio and when the laser beam hits your chest the radio is ringing again?
Cheers!
Cheers!
I wish i had payed attention in my electronics lessons :/