DIY distance sensor

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find_bruce
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DIY distance sensor

Postby find_bruce » Wed Nov 14, 2018 11:15 am

If you're interested in measuring just how close that moron was, here is a DIY distance sensor based on a rasberry PI, for output to your camera



I'm not sure how accurate it is, but it would be an interesting addition to the visual method that trailgumby sets out in his series on getting police to act on video evidence

march83
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Re: DIY distance sensor

Postby march83 » Wed Nov 14, 2018 11:25 am

Yeah, I saw this the other day. Doesn't look too difficult to put together.

There is a small business opportunity here if someone were to produce these things and ruggedize them, get them running efficiently on rechargeable batteries, provide some mounting options and most importantly thoroughly test and certify them such that they could be used as sufficient evidence of a close pass. If you could just hand your logged data to your local constable so they could just issue fines based on legit data then that might take some fiction out of the existing procedures.
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human909
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Re: DIY distance sensor

Postby human909 » Wed Nov 14, 2018 11:33 am

find_bruce wrote:I'm not sure how accurate it is


Consumer grade laser distance measurers are extremely accurate for this purpose. mm accurate to whatever it is pointing at. These are used all the time in construction.


The sad thing is that there is such a strong desire for things like this. :cry:

John Lewis
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Re: DIY distance sensor

Postby John Lewis » Wed Nov 14, 2018 5:30 pm

Was about to post same. Just as well I checked.
Not sure how much use it would be. Still needs the
authorities to be prepared to act.

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Thoglette
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Meanwhile, Barnes Wallis says: use two lights

Postby Thoglette » Wed Nov 14, 2018 5:57 pm

There's a slightly older method (75years old). Use two lights of different colours which cross 1m5 away from the bike . See here for more
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Tamiya
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Re: Meanwhile, Barnes Wallis says: use two lights

Postby Tamiya » Wed Nov 14, 2018 6:43 pm

Thoglette wrote:There's a slightly older method (75years old). Use two lights of different colours which cross 1m5 away from the bike . See here for more


Skipping dam bomb?

Why not a rear facing turret cannon with auto tracking... :twisted:

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Thoglette
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Re: Meanwhile, Barnes Wallis says: use two lights

Postby Thoglette » Wed Nov 14, 2018 8:30 pm

Tamiya wrote:Skipping dam bomb?

They needed an accurate height-above-water instrument.
They used two laps, one red, one green. The relative position told you the distance
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Tamiya wrote:Why not a rear facing turret cannon with auto tracking... :twisted:

Ok, now you've got my mind racing :mrgreen:
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bychosis
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Re: DIY distance sensor

Postby bychosis » Wed Nov 14, 2018 9:41 pm

A new feature for the next generation of fly 6 camera perhaps?
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chucknitro
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Re: Meanwhile, Barnes Wallis says: use two lights

Postby chucknitro » Thu Nov 15, 2018 1:47 pm

Thoglette wrote:There's a slightly older method (75years old). Use two lights of different colours which cross 1m5 away from the bike . See here for more


What an excellent suggestion!
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