Energy and Environment
Mini CNC Plotter
○ What is a Plotter Machine?
● The Plotter is a computer printer for printing vector graphics. In the past, plotters were used in applications such as computer-aided design, though they have generally been replaced with wide-format conventional printers. A plotter gives a hard copy of the output. It draws pictures on a paper using a pen. Plotters are used to print designs of ships and machines, plans for buildings and so on.
○ Materials
● Arduino UNO ---1
● L293D Motor Shield ---1
● Mini Servo Motor ---1
● CD-ROM Drives ---2
● 50mm long Nuts and Bolts ---8
● Pen ---1
○ Software
● Arduino IDE
● Processing IDE
● Inkscape ( Version 0.48.5 )
○ Servo Motor
● Servo motor Consists of 4 important components
■ Input Potentiometer
■ Error Detector
■ Amplifier
■ Motor
■ Feedback Potentiometer
● Input Potentiometer controls voltage signals.
● Error Detector detects errors.
● Error Detector consists two 1,000 Ohm Resistors.
● The Amplifier is limited to an output of either +12V or -12V.
● If the Error Detector has same Voltage on both sides their sum will be 0V. So, input on the Amplifier will be 0V thus stopping the motor.
● The Feedback Potentiometer turns the same angle as the Load on the motor and sends that signal back to the error detector.
● The Motor consists of a gearbox which is effective in controlling the speed of the motor efficiently.
● I built my Mini CNC Plotter with the help of this link
● Electricdiylab.com
Some Photos of my Mini Plotter
Completed CNC Plotter.
Me opening the CD Drives
Opened CD drive
Pen Holder for my CNC Plotter’s Pen.
Mechanisms which I am going to use for X and Y axis.
Costing for my CNC Plotter
|
Sr.
|
Materials
|
Price per Unit
|
Quantity
|
Total Price
|
|
|
1.
|
CD Drives
|
60
|
2
|
120
|
|
|
2.
|
Arduino
|
450
|
1
|
450
|
|
|
3.
|
Motor Shield
|
650
|
1
|
650
|
|
|
4.
|
Acrylic Bed
|
7
|
1
|
7
|
|
|
5.
|
Acrylic Penholders
|
1.6
|
6
|
9.6
|
|
|
6.
|
Mini Servo
|
150
|
1
|
150
|
|
|
7.
|
Jumper Wires
|
2.7
|
8
|
21.6
|
|
|
8.
|
Hot Glue Stick
|
15
|
2
|
30
|
|
|
9.
|
Screws and Bolts
|
5
|
8
|
40
|
|
|
10.
|
Pen
|
2
|
1
|
2
|
|
|
Total
|
Rs. 1,480
|
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