TechnoReview85

It is simple radar project using Arduino you need to make it .Arduino UNO 9G micro servo motor  Ultrasonic sensor hc-sr04 Bread board jumper wire  Download code & pde file from here Download processing IDE from here Connection- HC-sr04 Trig pin connect to Arduino Digital pin - D10 HC-sr04 Echo pin connect to Arduino Digital pin - D11 vcc to arduino 5V Gnd to Arduino Gnd Servo signal pin to Arduino Digital pin -D12 vcc to arduino 5V Gnd to Arduino Gnd After download Radar.zip file unzip it upload radar.ino file to Arduino using arduino IDE open radar.pde file using processing IDE change com port to your own com port witch is connected to Arduino UNO change resolution as per your computer resolution Now Run it Video of this project

It is a guide for making mini CNC plotter using old DVD drive stepper motor this machine can print up-to 40mm X 40mm I used here arduino nano & 2 piece  L293 dual motor driver IC as stepper motor driver The Pen mechanism of mini cnc collected also from old DVD driver (drawer part) For graphical user interface I have used a simple free Chrome extension named "Gcode sender" Download Gcode sender from here You need hardware  Old Dvd drive - 2piece ply wood 6X8 inch - 2piece Arduino nano 9g micro servo motor  vero board IC L293D - 2piece Male , Female header pins Terminal block LED 220 ohm resistor wire   Nut & screw   Assembling Hardware  First take out stepper motor from old DVD This video can help you  Mark on plywood for fit stepper motor mechanism & drill on mark. joint two ply wood like "L" using small piece of metal clamp  solder 4 wire on stepper motor connector points  Now fit stepper motor mec