# Introduction

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introduction

## Step 8:

Participated in the
Creative Misuse Contest

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• ### Lamps Challenge

WOW! Someone finally found a use for the CD-ROM transport besides a CNC pen scribbling program! Nice adaption...

As mentioned by bionicbenjy, you might want to look at the million projects on YouTube that use two CD-ROMS to give a full XYZ table. Go to YouTube and search for "Arduino pen plotter". For example

thank you sir...its my first instructable...wil try my best on next...nd i also made Arduino control CNC plotter using Old DVD stepper motor

Nice attempt , but I have 2 observations here.

1) Assuming that this is indeed USB bus powered , how many milliamps are you pulling from the bus powering the camera and the LEDs ?

2) You do not control LED brightness this way. The way you have done it gives you very little control. You need to control the input voltage to them by using a PWM input signal. You can use a simple 555 to give a fixed frequency variable duty cycle waveform to adjust the brightness.This can also reduce the amount of current draw on the USB bus..

Good Job!

The ideia here is to keep it simple and (almost) free, I dont see why to put an Arduino, this is like a cannon shot in a fly.
Ins_rakesh, nice work bro, your project can be done without spending a single penny but still a marvelous science device for who cant buy one.

The issue about the power and the LED brightness is a real question.
1. Make sure you is not drawing too much current from the USB port (just measure it).
2. Maybe try another way to dimm the LEDs, but a simple way, not Arduino.

Ohm's law states that the Induced current through a conductor between two points is directly proportional to the Electromotive force across the two points, and is inversely proportional to the Resistance. That's the way George Ohm said it.

The best way to control led brightness is to power it with a current source. led brightness is controlled by the current flowing through it. A current source is not hard. You simply put a resistor in series with the load, and use a voltage regulator to control the voltage across the resistor. I=E/R

thank you so much sir...your commt wil help me to make this project improve...i'm beginner here nd its my first instructable...

Super , im glad I can help.. Whatever you do , dont forget , enjoy it!

Just a an idea for you , an Arduino will do the PWM for you , and then you can also control the focus motor as well , as its a stepper motor i believe.. That would be a good upgrade for you!

Nicely done. Can you put up some image or video captures from the Camera?

Great idea! Thanks for sharing.

I caution builders to make sure your old webcam works with your OS first. I have an old webcam (Logitech V-UM14) that won't work beyond Windows 7. I hate to have someone build this only find out there aren't any drivers for it.

Other than that I think your instructable is pretty concise... I built one somewhat like this for a USB Microscope, but I used a wood frame.

go for driver updates on device manager...hope it wil work

Very nice project! As you said, "don't throw any electronic device away." Great ingenuity here and nicely carried out. Good luck in the contest

Very interesting project - and a great 'creative misuse' idea. Good luck in the contest! :)

thank you...pls vote for me

What If... you had 2 drives... mounted the camera head on the second drive mech, you could have an all singing X Y Z moveable scope, save fiddling with the slide to move another area into view... still a good idea in first place