Timing system with RPi - Raspberry Pi Forums
hello!
new forum since half year ago bought raspberry pi, have been making nice projects it.
alpine skier , next try out timing system. when starting round going trough start gate. time time starts run , when @ end going through finish line - time stops.
want add split times developing skiing. split times can calculate avg. speed between gates , helps show how losing speed , slowing down example when making mistake during round.
idea pretty simple:
1. opening start gate should send start signal rpi , time starts run.
2. when hitting gate has shock sensor in transmitter send split signal rpi show split time. (for example start 5. gate)
3. there can many splits (up 60) showing time example between gates 2-3 or 5-8.
4. when going through finish line (ir-ray or alternative laser), finish component should send stop signal rpi.
5. rpi show skier's time , split times. more developed in future transfer data rpi computer , build paragraphs combine results skiers , synchronize paragraphs taken video.
1) know transmitters , receivers should use because range should 2kms.
2) need coding because amateur that. right more important make hardwares work , after start think coding.
thanks,
jaska
new forum since half year ago bought raspberry pi, have been making nice projects it.
alpine skier , next try out timing system. when starting round going trough start gate. time time starts run , when @ end going through finish line - time stops.
want add split times developing skiing. split times can calculate avg. speed between gates , helps show how losing speed , slowing down example when making mistake during round.
idea pretty simple:
1. opening start gate should send start signal rpi , time starts run.
2. when hitting gate has shock sensor in transmitter send split signal rpi show split time. (for example start 5. gate)
3. there can many splits (up 60) showing time example between gates 2-3 or 5-8.
4. when going through finish line (ir-ray or alternative laser), finish component should send stop signal rpi.
5. rpi show skier's time , split times. more developed in future transfer data rpi computer , build paragraphs combine results skiers , synchronize paragraphs taken video.
1) know transmitters , receivers should use because range should 2kms.
2) need coding because amateur that. right more important make hardwares work , after start think coding.
thanks,
jaska
hi jaska,
a) implement communication between gates (eg. when gate #3 "hit", passes id & timestamp gate #4, passes data gate #5, ... , last gate passes data raspi. (of course, communication optimized collect more timestamps in 1 data packet...). 1 selected when need "real time" data.
b) skier carries receiver (collector of data), when he/she passes gate #3, gate transmits id signal receiver... etc. therefore, skier collects data along path... 1 power efficient, because range required minimal, since event happens skier is.
best wishes, ivan zilic.
longer range requires (also) more power... in each gate. reconsider taking approach, 2 of them better:jaska120 wrote:i know transmitters , receivers should use because range should 2kms.
a) implement communication between gates (eg. when gate #3 "hit", passes id & timestamp gate #4, passes data gate #5, ... , last gate passes data raspi. (of course, communication optimized collect more timestamps in 1 data packet...). 1 selected when need "real time" data.
b) skier carries receiver (collector of data), when he/she passes gate #3, gate transmits id signal receiver... etc. therefore, skier collects data along path... 1 power efficient, because range required minimal, since event happens skier is.
we're used this... on daily basis, can read here messages people "implement" something, they're unable make wbs...jaska120 wrote:i need coding because amateur that.
best wishes, ivan zilic.
raspberrypi
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