My CNC mill machine in progress....

X-Y of my CNC :
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My Z axis assembly:
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My CNC with controller and power supply:

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The project is done ;the electronics and the mechanics are completed and tested......

You tube link: http://www.youtube.com/watch?v=-sdNDNUKj0A

My father participates in the mechanics and i work in the electronics.....

LED MATRIX driven by PC

This project consists of 2 LED MATRIX 8*8 soldered beside each other and controlled by a PC software named "Led Matrix Control" through a microcontroller "PIC16F628".
The serial communication RS232 is level converted by an integrated circuit MAX232.
The power is controlled by a traditional regulated power supply.

What is a thermistor?

A thermistor is a type of resistor with resistance varying according to its temperature.
It is a sensor used to measure temperature in controlling any process

What is a CNC mill machine?

A CNC mill machine is an engraving machine that execute a code named Gerber code or G code.
A G-code is something like coordinate in X,Y,Z.
Any bitmap or jpeg photo could be converted to G code in its grayscale format.....
To make a CNC mill machine you need 5 things : stepper motors with the specified torque, stepper motor drivers(prefreably microstep driver but it is expensive) , paralle port driver circuit, power supply from old pc, a mechanism of the machine (could be find in ebay) ,a CNC mill software like Mach3 or KCAM .
Any electronic circuit could be made by CNC machine.