I have been thinking a bit about how to safely and relatively accurately determine weapon RPMs. Now I have a few tachs about integrated into my data loggers however most people done.
What most people do have is a smartphone most are capable of 60fps, 120fps or even 240fps (iPhone 6) video. I just tested it on my iPhone 6 and 240fps is plenty fast enough to catch the 6.67 rev/second of 400rpm. That is 36 full frames for one revolution.
I hopefully will get a chance to do up video tutorial tonight but it means if I need to test and 400rpm sportsman bots I will just throw them in the arena spin em up and take a short video.
Strobily Free for smartphones. I use it at work for timing rotating machinery. It has strobe and tacho modes which both can be used to see whether a spinning weapon exceeds an RPM threshold, can measure the speed of a weapon for tweaking it to the correct speed.
Tue Sep 29, 2015 10:43 am
miles&Jules Experienced Roboteer
Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD
Also if you re using a slow-motion camera or phone to check rpm ..you can set up a regular wall clock next to it to check how many rpmā¦there is a bit of counting involved.
Joined: 17 Sep 2015
Posts: 18
Location: SE Victoria
Strobily is awesome! Thanks for the link.
When I installed Strobily, I also installed Magnetic Counter.
Tue Sep 29, 2015 4:24 pm
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