Light Source

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Re: Light Source

Postby McGee2021 » Mon Nov 23, 2015 2:39 pm

reshiram202 wrote:My image is about 1 1/4 cm. Wouldn't an LED 8x8 matrix be too much?


It might be, but I don't know how big the LEDs would be. If they are a bit big, you could only send power to the ones closest to where the image needs to be seen. Or, you could send power to all of them and cover the outer ones up with cardboard or dark plastic.
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Re: Light Source

Postby reshiram202 » Mon Nov 23, 2015 2:59 pm

McGee2021 wrote:
reshiram202 wrote:My image is about 1 1/4 cm. Wouldn't an LED 8x8 matrix be too much?


It might be, but I don't know how big the LEDs would be. If they are a bit big, you could only send power to the ones closest to where the image needs to be seen. Or, you could send power to all of them and cover the outer ones up with cardboard or dark plastic.


The ones I have found require soldering...

BTW the LED edison bulb I mentioned earlier is about 0.04 amperes.
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Re: Light Source

Postby Klaas Robers » Tue Nov 24, 2015 3:53 am

Oh Jimmy, are you afraid of soldering? Learn it immediately. I was 12 to 13 when I learnt it. It gives you enormeous amounts of freedom. You suddenly can MAKE something.

Ask a cheap soldering set for Christmas. An expensive one will come later. Then you know what you are looking for. And find a radio amateur in your close neighborhood, go there and ask him if he can learn you the right soldering technique. Or don't you have a teacher at school that can teach you this?

Good luck. It will change your life.
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Re: Light Source

Postby McGee2021 » Tue Nov 24, 2015 3:58 am

I can solder, i just do hard wiring most of the time.
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Re: Light Source

Postby DrZarkov » Tue Nov 24, 2015 4:01 am

It's never too much, if you want to watch in daylight. But a single ultra bright LED can produce reasonable pictures. I'm using for a similar set with a picture about 1" x 1,5" a set of 6 LEDs. For a bigger picture I found another quick and dirty way: There are torches for a few bucks with an array of LEDs available, I've bought such a torch with 32 LEDs for only 4 Euro (about 5 US$). There you have 32 LEDs properly soldered, and already two wires (to the batteries) to connect the LEDs to the driver circuit.
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Re: Light Source

Postby McGee2021 » Tue Nov 24, 2015 5:42 am

Another question, what electronics do you plan to use? that plays an important role in your televisor. you cant just hook lights up to a cd player.
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Re: Light Source

Postby reshiram202 » Tue Nov 24, 2015 7:20 am

I will be using my computer to send the audio.

I already have a soldering iron and solder but it doesn't get to a high enough degree to let it flow for a second like most solder.
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Re: Light Source

Postby McGee2021 » Tue Nov 24, 2015 10:00 am

reshiram202 wrote:I will be using my computer to send the audio.

I already have a soldering iron and solder but it doesn't get to a high enough degree to let it flow for a second like most solder.


Yes, but you need something to power the leds, as a secondary powersource, or an amplifier from the computer to the amplifier. Also, How many rpm is the motor that is connected to the disc? to get a reasonable picture, it should be at least 750 rpm.
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Re: Light Source

Postby reshiram202 » Tue Nov 24, 2015 12:22 pm

The motor itself will be plugged into a speed control for synchronization. The LEDs will be driven by standard audio cables. These audio cables recieve audio from my computer to the televisor. I don't know how many rpm. As much as possible I guess to get the most fps possible.
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Re: Light Source

Postby McGee2021 » Tue Nov 24, 2015 1:41 pm

reshiram202 wrote:The motor itself will be plugged into a speed control for synchronization. The LEDs will be driven by standard audio cables. These audio cables recieve audio from my computer to the televisor. I don't know how many rpm. As much as possible I guess to get the most fps possible.


Yes, but what circuitry are you using to power the led, you can't just hook the LEDs directly up to the computer. Also, what is your motor control and what type of motor are you using?
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Re: Light Source

Postby reshiram202 » Tue Nov 24, 2015 1:58 pm

I saw a diagram in a forum post with an LED driver schematic so I will just follow that. The motor is a fan motor with a max of 1700 RPM I believe. The control has a power cord input on the bottom to hook the motor up to and a dial to decrease or increase the speed.
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Re: Light Source

Postby McGee2021 » Wed Nov 25, 2015 5:53 am

Yes, but the led driver that i think you are speaking of requires other circuitry.
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Re: Light Source

Postby gary » Wed Nov 25, 2015 9:47 am

If you haven't already, look up the Klaas Rober's LED driver circuit on this forum - no soldering, few components, good results. What more could you want? ;-)
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Re: Light Source

Postby McGee2021 » Wed Nov 25, 2015 11:18 am

gary wrote:If you haven't already, look up the Klaas Rober's LED driver circuit on this forum - no soldering, few components, good results. What more could you want? ;-)


Ah, yes. i forget that it is in the hand book.
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Re: Light Source

Postby gary » Wed Nov 25, 2015 12:32 pm

McGee2021 wrote:
gary wrote:If you haven't already, look up the Klaas Rober's LED driver circuit on this forum - no soldering, few components, good results. What more could you want? ;-)


Ah, yes. i forget that it is in the hand book.


And on this forum: download/file.php?id=7266
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