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by Wibbes
Sun Nov 03, 2013 5:39 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Just in case anyone wants to see how a counter like this could be done on a track. this is my clubs setup
Image
by Wibbes
Sun Nov 03, 2013 5:26 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

i think the problem of speed for the pi , is that i havent tryed to code in c# , just using python which is an interpreted langues making the timings even worse , if anyone has an ideas about how easy it would be to speed up in python on the pi, i would be happy to help out the best i can
by Wibbes
Sun Nov 03, 2013 4:40 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

well you could use your pi as a front end display for ure timer , ardunios dont have hdmi (atleast not cheap)

maybe a serial link between an arduino doing the real time stuff and the pi doing the display , positions and less time stuff
by Wibbes
Sun Nov 03, 2013 3:24 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

hi bard long time since i have being looking into this, i have started working back in windows to give it a bit more power for a 6 lane setup. one the main problems for the pi is its speed, especially when trying to monitor 2 or more lanes it becomes very hard to time them accurately , think best i ...
by Wibbes
Mon Mar 04, 2013 3:39 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

To achieve the ir detector setup you need to have a sensor under each slot and LEDs shining down at them to stop changes in the light around them setting them off http://i1337.photobucket.com/albums/o678/Wibbes/image_zpscb69b22f.jpg As for the reed switch interface which is properly the best suited ...
by Wibbes
Mon Mar 04, 2013 2:57 pm
Forum: Python
Topic: check if GPIO pin input or output
Replies: 6
Views: 3216

Re: check if GPIO pin input or output

Sadly to say there is no function on the RPi.GPIO libary to check if it is a input or output , if you could describe what you are trying to achieve I'm sure someone maybe me could possibly help you out
by Wibbes
Mon Mar 04, 2013 1:38 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Shouldn't be that hard to add sectors if that's what you mean , the pi has 17 GPIO pins that can be used , so for a two lane track you could add up to 8 sets of sensors and still have an free gpio pin for (track power or a start light) ,as for sensors my clubs track uses ir sensors under the start l...
by Wibbes
Mon Mar 04, 2013 12:41 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Yer you do need a sensor to detect laps, maybe a ir photo diode or switch in the lane, the role of the sensor is only to connect the GPIO pin to ground. Will draw a little circuit diagram up for you when I return home from college. Just bare in mind that at the moment the timing is only accurate to ...
by Wibbes
Mon Mar 04, 2013 8:54 am
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Morning guys, as promised here my current prototype, currently it only times one lane, a sceond lane should be simple just a copy and paste job i think in order to work you need to be running pygame and the gpio library , if anyone dosent know how to install these items i will be happy to help. the ...
by Wibbes
Sun Mar 03, 2013 8:42 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Glad to know there's a need for it :) will post in morning after I've removed all the bits that I'm currently working on, trying to make up a menu but its not working and every time you run it it crashes, so watch this space
by Wibbes
Sun Mar 03, 2013 6:36 pm
Forum: Python
Topic: Stopwatch
Replies: 34
Views: 14408

Re: Stopwatch

Hey guys, I'm unsure if anyone's still looking to use the pi as a lap counter for a slot car track, but I'm having sum success with it at the moment, will post the code if anyone's interested. Sadly it looks like the timing of it is out abit, so if anyone could help me out there it would be a huge h...

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