Pulsated LD

Hi,

ok, here we go.

I want to build a pulsated LD with tone and volume adjustment logs (full circle motion) which will run on at least 3 V with an increase maximum current output through the use of Darlington pairs. Besides that, i'll need an IC chip that is capable of having data placed on the current just before it gets sent out through the pulsated LD.

Thanks

 

Ok. It is a voltage source that emits a pulsated signal from a Laser diode. I want to amplify it and be able to send the data through walls to the receiver.

 

Yes LD stands for Laser Diode. It should have volume and tone controls to modulate the output.

Yes like a rotary encoder where the volume goes from low to high and drops then as you continue turning it in the same direction the volume picks up again starting from low to high.

 

The signal is to be emitted by a laser diode. What is the difference? A laser diode can only do one thing - Emit.

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I suppose. Ok how about this - the LD uses 2 functions to drive it:

1) One is used to make the LD brighter or dimmer - this enables the data to be marked more larger or smaller into the surface of wood .
2) The other function makes the LD pulse slower or faster - This should make the data mark deeply onto the surface (e.g. wood) of the material or just faintly.

That is what i was trying to do. So the voltage source is about 3V and taht is fed into an IC which leads out to the LD connected with its 2 functions i mentioned above.

 

The overall aim is to make a wireless image engraver with memory that can read and write.

I don't know what the nature of the signal is, but i'm pretty sure it is used for images. The volume and tone is just what i call it because it is the easiest for me to remember them. But in truth volume makes the signal get wider, and the tone should either compress the signal or expand it.

Ok, The image from a computer should be saved into the memory of the wireless engraver which then is presented out using an LD using pulse per second waves. In addition, you can customize the image presented by making it large or small using the 'volume' controller.

Also if you want to customize the image further (such as engraving the image deeper into the surface so it won't get rubbed off easily) then using the other 'tone' controller should make the image darker / lighter.

I hope i answered it correctly. It's already hard as it is to explain and i don't want to have a bad rep on your forum man. Cheers

 

Ok, so which interfaces can i use that will only allow the device to receive the images and not be powered up as it is plugged into the computer? Because i need the image to be saved in order for the engraver to show the image, I can only think of usb's doing this plus they have the ability to transmit power at 5v to power up devices.

So i'm thinking if it is possible to cut out the 5v transmission and just keep the usb with its ability of transferring data then that would be great.

I drew up a draft plan just for further clarity. Any questions feel free to ask me.

 

Yes, but this is not so complicated. I mean here's the questions i did my research on:

1) Can a LD have a driver controller attached which controls how how bright/ dim it will go? This is dependent on the current and voltage being allowed through the VR.

2) If so, Can it be possible to attach another controller which controls how fast the pulses/ blinks go? On normal LED's i think they use this for strobe lights as well but it is possible for LD's to use.

3) Can an LD pulse signal contain data? If so, what IC is there to use and where can i get one? I know that EEPROM somewhat stores commands which can run the image but i think there are some IC out there that can store images up to megabytes have the ability to keep them there even if the device is turned off.

I've really put some effort into building this. Please help me build it.

 

I know which type of Laser etcher you are referring to. it is the one that you load an image or design into and it automatically draws it out with accurate precision. This project is not like that.

In this project, you load the image into the device and the full image then gets projected out using LD pulses. Completely different. In the first one, the laser etcher starts drawing from one point of the drawing. In this project, the LD starts etching the whole image, not from a point. It is alot quicker than the first.