MPE calculator for your iPhone. Are you interested?

[allthatwhichis]

This is possible, I allready have figured out how.

If there is enough interest I can talk to some app writers to see how hard it is to write the correct software.

But the thing is you still need the a calibrated head, and this is the most expensive part, not the meter part.

Awesome! I figured it would be possible, even easy. Just have to figure out how to wire a meter head to the proprietary plug and read voltage from it. If I had a laser meter head I probably would have tried to find a way to splice it with an iPod plug by now...

I also knew getting the meter head would be the pricey part. I would think this hardware component would open up a lot of doors to what the iPod, ect. could be used for with lasers; spectrometer, beam profiler... I know I carry my iPod with me everywhere and would rather carry it and a meter head over a whole laser meter with head and accessories.

[White-Light]

With respect to the OP, you shouldn't be using McCarrot's calculator as a base without permission. He owns the Copyright.

To the best of my knowledge, it was posted here only for free non commercial use. That doesn't remove his rights in respect of commercial restriction.

You should either come to an agreement with him or refrain from using his calculator as the basis for your app.

[allthatwhichis]

Hmm, looks like everyone is trying to make money here, time to remove my calculator from this forum

I say take the results from the poll and make yourself some money.

[taggalucci]

http://www.photonlexicon.com/forums/...129#post198129

I'm happy to help you with fitting this is to a IOS app. We could even more simplify it for more easy use in the field.

The monetary figure relates to cost, not profit. Seems a bit of a knee jerk reaction from someone all too ready to make a buck for himself from this community.

[mccarrot]

I'm still happy to help with making a IOS app, but you should make this app free of charge and not charge 50 euro for it.

I'm now looking to build it in HTML with java so it can run on any OS.

[flecom]

wouldn't it be a lot easier to make this in PHP put it up on some website and then it would work on any smart phone?

[Jem]

Hey Guys

Don't want to p*ss on your bonfire, but i can tell you that there is an MPE app already going through the approval process at Apple. Should be in the App Store in a couple of weeks time all being well

[taggalucci]

I think the key thing is having an app, not who/how etc.

I look forward to seeing that available as does Kit I'm sure.

[kitatit]

But the point of the calculator is that you don't need to be in the audience area to take the measurement. It is designed for people with simple thermopile type meters, rather than fast photodiode meters.

In fact, I don't take readings at a gig at all, its not the right environment (I find shooting static beams into areas I can access [and possibly other crew] with a meter to be far more hazardous than any other activity with the laser I might do over the course of the gig).
Also, I don't know about you, but getting my projector apart so I can apply a 5V source to modulation is a very involved process that should really only happen on the bench, not in a gig situation (imho)
I do however know what my lasers produce CW at 10% increments, so I can adjust appropriately. I work on a worst case scenario, but I also don't cry over small variations, where the overall effect is really negligible, in the same way that 1mph over the speed limit isn't automatically going to kill someone where 70mph wouldn't have done.

The beauty of knowing the beam specs (diameter and divergence) and power is you can extrapolate the area it will cover and therefore the relative power at the point of audience contact.


edit: also, once you've done your initial calculations, you probably don't need to do them again unless you change hardware. E.g. I know my lasers are safe at X metres doing my standard beam show patterns, at Y power. So assuming nothing has changed, I can just go along to a gig and know that if the distance to the crowd is set up as >=X then I'm good.

All valid points norty.

It can be used in different ways by different people.

Quiet possibly I may never actually do audience scanning in a public show. It may prove unviable, which I'm prepared to accept. Western Australia is a pretty tough jurisdiction
to work in so I have to do things by their book.

To do a public show here I have to do a laser safety coarse, pass the LSO exam, submit the specs of each laser I own to the radiological council and pay a 3 yearly licence fee
for each one. Next I have to submit a show proposal with all the details 2weeks prior, stating the hazards and controls. If I plan to audience scan I would have to show that I'm taking steps to ensure the show is as safe as practicably possible.

I'm planning on doing this with several layers of redundancy.

-Training.
-Build a projector that complies with the standards.
-Fit a scan-fail with automatic realtime beam attenuation and actual scanned beam power feedback (I've bought an EyeMagic IRIS ColorSafe).
-Beam attenuation maps.
-ND filters or masking aperture to attenuate the edges of the scan field in circumstances where there are balconies and a solely horizon based scan-fail unit proves limiting.
-Calibrate scan-fail with professional meter with a sensor sensitive enough to measure down to MPE levels.

An app would just be a piece of the puzzle to help out.

Very possible.
Will try something in Xcode later on tonight...

P.S. Need any help bolting this all together into app form or are you sorted?

Ta,
Dan

Hey Dan, sweet! That feature is more than I'd dared to hope for. Get chatting with Allthat, he will be jumping for joy!

Hmm, looks like everyone is trying to make money here, time to remove my calculator from this forum

Hi Maurice. I think you are jumping to conclusions.

Didn't you get the email I cc you?

My personal interest in making money out of an app like this is zero.
As Tony stated below, its not about making money, its about making and app available.

It's not a pissing contest and I'm not trying to make this "My thing", my skills lie elsewhere.

I just want an app and this is a thread to try and make it happen. Tony just offered to help and so has Dan. I sounds like you have app developing skills to.

Please be a part of it if you can.

I don't want or expect to have any financial involvement, except to pay for the app as an end user (Yes I would pay $50) If someone released it for free I'd pay $50 to subsidise
it's development costs if that's what it takes to make it happen.

Besides, the only thing I have to offer a project like this is to offer enthusiastic support to the people who have the skills to do it.

If someone has the time to do it for free that is awesome! but as a hopeful end user championing the cause for someone to make it, I don't expect anyone to make it for me for
free.

With respect to the OP, you shouldn't be using McCarrot's calculator as a base without permission. He owns the Copyright.

To the best of my knowledge, it was posted here only for free non commercial use. That doesn't remove his rights in respect of commercial restriction.

You should either come to an agreement with him or refrain from using his calculator as the basis for your app.

First off, It's not my app. I just want to buy an app that does this. Second, I've thankfully credited mccarrot several times in this thread, his original thread
http://www.photonlexicon.com/forums/...ions-made-easy and in an email to him Bill, Jon and Tony asking if there was any IP issues and
their thoughts.

I may be a punk kid with a lot to learn but my folks brought me up properly.

wouldn't it be a lot easier to make this in PHP put it up on some website and then it would work on any smart phone?

That would be a good option but it can get awfully crowded on the mobile networks at big events. Ever given up on sending an sms in a crowd of 40000?

Hey Guys

Don't want to p*ss on your bonfire, but i can tell you that there is an MPE app already going through the approval process at Apple. Should be in the App Store in a couple of weeks time all being well

Awesome! all the better! If someone has already got a bonfire alight I'll happily warm myself next to theirs.

I think the key thing is having an app, not who/how etc.

I look forward to seeing that available as does Kit I'm sure.

Amen to that

[j4cbo]

http://kremvax.su/j4cbo/mpe/

Was that so hard?