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FrozenGate by Avery
can someone help with a little project i want to start?
- Thread starter SnugNuts
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Benm
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If you just stick to <5 mW lasers, i think the risk would be fairly minimal. As long as the hula hoop is in motion there would be little risk as the beams just sweep around quickly and cannot hit a bystander in the eye with dangerous results. This logic would even apply for more powerful lasers.
The problem is once you drop the hula hoop for some reason. At that point there is no way to tell if anyone is going to be lasered in the face, and since its stationary at that point, anything over 1 mW would be a hazard.
So stick to the cat toy lasers, don't even thing of putting a few 100 mW lasers on it unless you don't have any audience and everyone in the room is wearing goggles... though those lasers will destroy your camera too - but those are more easily replaced than retinas.
The problem is once you drop the hula hoop for some reason. At that point there is no way to tell if anyone is going to be lasered in the face, and since its stationary at that point, anything over 1 mW would be a hazard.
So stick to the cat toy lasers, don't even thing of putting a few 100 mW lasers on it unless you don't have any audience and everyone in the room is wearing goggles... though those lasers will destroy your camera too - but those are more easily replaced than retinas.
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A cheap motion sensor could stop the Lasers when the
Hula-Hoop stops spinning.. It could be as simple as the
centripetal switches in some $$ store LED yo-yos...
Jerry
Hula-Hoop stops spinning.. It could be as simple as the
centripetal switches in some $$ store LED yo-yos...
Jerry
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Tho only and main thing you need to know
about Lasers is...... They are DANGEROUS
to your eyes if not protected....
That being said....
It depends....
If you are going to use <5mW $$ Store Lasers...
they already have a driver. All you need to do is
supply 4.5 to 5.0 VDC at about 50mA per Laser...
Jerry
about Lasers is...... They are DANGEROUS
to your eyes if not protected....
That being said....
It depends....
If you are going to use <5mW $$ Store Lasers...
they already have a driver. All you need to do is
supply 4.5 to 5.0 VDC at about 50mA per Laser...
Jerry
Last edited:
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WHAT ?????? :undecided:
What makes you think that the veterans DON'T have
proper and appropriate Laser Safety Goggles/Glasses...:thinking:
Jerry
JaiNobeZ
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To OP:
First, decide on one of these three courses of action:
1: Safest and easiest - buy 2 sets of these
Red laser safety goggles/590-780nm protective goggles [OLRLG650] - $14.99 : Welcome to O-Like.com, Your source for laser products
and never use the hoop unless both of you are wearing them
OR
2: More expensive, but probably more fun since you can see it with your own eyes and producing of the safest finished product - Products buy one of these and measure the output of ALL of the lasers coming off your hoop. As long as they're significantly below 5mW (say, 2-3 max) you should be fine. If any aren't, chop 'em out and solder in a different one.
OR
3: Most complicated, but also probably cheapest. Use a motion sensor to make the lasers shut off as soon as the hoop stops moving. I'm afraid you'll have to discuss that with someone other than me though, as idk too much about non-laser electronics.
Use these:
10pcs 5mW red laser module/dot/adjustable lens [OLRLM05] - $25.00 : Welcome to O-Like.com, Your source for laser products
Parallel or series? I'll need some input here, but my understanding is that if it's in series you'll need a higher Voltage source and parallel you'll need a higher current source. These can be obtained by putting either more batteries in series or in parallel respectively. Pushing in more Volts will make the drivers heat up faster and therefore will reduce duty cycles, but with 5mW modules you probably needn't worry about duty cycles.
Also, look into oscillator circuits, using pulsed lasers would look awesome. Definitely upload your pictures & videos when you finish it!
First, decide on one of these three courses of action:
1: Safest and easiest - buy 2 sets of these
Red laser safety goggles/590-780nm protective goggles [OLRLG650] - $14.99 : Welcome to O-Like.com, Your source for laser products
and never use the hoop unless both of you are wearing them
OR
2: More expensive, but probably more fun since you can see it with your own eyes and producing of the safest finished product - Products buy one of these and measure the output of ALL of the lasers coming off your hoop. As long as they're significantly below 5mW (say, 2-3 max) you should be fine. If any aren't, chop 'em out and solder in a different one.
OR
3: Most complicated, but also probably cheapest. Use a motion sensor to make the lasers shut off as soon as the hoop stops moving. I'm afraid you'll have to discuss that with someone other than me though, as idk too much about non-laser electronics.
Use these:
10pcs 5mW red laser module/dot/adjustable lens [OLRLM05] - $25.00 : Welcome to O-Like.com, Your source for laser products
Parallel or series? I'll need some input here, but my understanding is that if it's in series you'll need a higher Voltage source and parallel you'll need a higher current source. These can be obtained by putting either more batteries in series or in parallel respectively. Pushing in more Volts will make the drivers heat up faster and therefore will reduce duty cycles, but with 5mW modules you probably needn't worry about duty cycles.
Also, look into oscillator circuits, using pulsed lasers would look awesome. Definitely upload your pictures & videos when you finish it!