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Device to Improve Sound/Lighting/Accuracy for a Digital Camera Answered

Hi Folks,

How are all of you? I'm new on this forum and I am glad to be here! :D

Anyways, I need some help on a little project I am trying to achieve... I've been working on it for sometime, but unfortunately I am not very knowledgeable when it comes to circuits and need some help. It's kind of complex, so please bare with me. If anything is unclear, please ask me to explain.

Okay, here is what I want to do. I want to connect a small microphone, two LED strips, a laser pointer module, a battery pack, and an "on/off" switch all to a handheld device which would allow me to harness my digital camera to it. This would give my pictures/videos better sound, lighting, and a light that will allow me to point at stuff ( the laser pointer). The battery pack would power it separately from the camera, and finally the power switch would all me to (obviously) turn the device on and off.

Now, for further detail:

-The microphone would be one of those small ones that can be powered off of cameras. It'd be similar to the cheap ones you can buy for your iPod Touch. If you know of a nicer mic that would draw a little more power and thus need to be connected to the battery pack, but be better sound, please inform me.

-The LED strips would need to be, at most, 8 inches long, and allow me to provide light from above and below the camera. In other words, I'd basically have two different 8 inch long spaces on the device for the LED strips. It doesn't HAVE to be a strip, but could be two modules of LEDs - say, two 3 inch modules. I say this part about the modules as I'm looking for good lighting, but I want to be able to have it draw the least amount of power possible as I am using batteries to power it and am open to whatever configuration will suit this the best.

-The laser pointer module (this will allow me to point at stuff as I am recording it and talking about it), would again need to draw a little power as I would run this off the battery. I would probably use a 5mW red laser module, but I am totally open to any ideas if you know of a different laser that would suit this device better.

-The battery pack would need to be as light as possible. I purchased a 4 AA battery holder pack, which seems like it will work, BUT I was wondering if there would be a better way to power this (smaller, lighter, and more powerful, all while using popular type batteries so that way I can still find batteries fairly easy - i.e. 9v, AAA, etc...). Maybe have two separate power packs? Just an idea...

-The momentary switches would be for the LED switches and the laser module. I would want one for each so they could be controlled separately.

Two last notes: I would like each of these modules (the LED strips, the laser module, the battery packs, and the momentary switches) to be able to be connected to the main device using connectors. This would allow me to keep all the wiring inside the device and not have to re-wire anything IF one of the modules needed replacing (say, the momentary switch for the laser module died), but would allow me to simply detach the defective one, and attach the new one onto the device. Also, I don't know what size of resistors or wiring that would suit this the best. If you could include that, I'd greatly appreciate it.

If someone could help me, I'd appreciate it so much. I've been trying to search this forum for this, but can't find a similar layout... I don't really know how to calculate the correct amount of power and all that as, again, I am not very knowledgeable in this...

Again, thank you so much.

Waldoctg

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waldoctg
waldoctg

8 years ago

Thank you guys so much!!! But I'm looking for more technical answers...

Anyone?

Waldoctg

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killerjackalope
killerjackalope

8 years ago

A large chunk of that and the needed interface is in most external flashes - though obviously sound is ignored.

All the canon models I have use a grid that's projected during focusing, even in rather insane environments they'll halve focusing times in the dark...

This grid incidentally is an awesome way to aim the camera if it's relatively dark, I often use it during crowd shots, I'll hold the camera up above me and get a rough idea of the aim from the grid.

The laser idea would be simple, zero it like a gun with the longest lens you have on the centre af spot.

For the microphone bit I'd probably opt for a battery powered pack that'll interface nicely with any XLR mic, powered so you're not limited to dynamic mics only. Sometimes you'll want omni directional pickup, a lot of the time cardioid and for noisy places with a focus on people talking, ie interviews in public you'd want a hyper cardioid pickup (shotgun mic)

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canucksgirl
canucksgirl

8 years ago

Sounds like a project for the Instructables Spy Challenge...