Design and mill PCB: Easy and Cheap – Part 1
Old CNC New CNC
I write this guide because I think It’s helpful have a starter tutorial to milling PCB in a very simple way and low budget.
Instruments: Router
If you have some passion for homemade things you must build a router.
To build It you need arduino an old scanner and an old printer.
I write old in bold because new device sometime haven’t a stepper motor but brush motor with feedback device.
Than If you have at home a dremel like It’s perfect to complete your CNC.
My old CNC is that (a mix of drawer guides, epson gt-8700 and Lexmark x642e all completed with plexyglass).
Instruments: Router Electronic
Component of CNC
- Arduino UNO.
Arduino UNO Arduino UNO - Arduino MEGA 2560 R3 - Arduino Nano - Arduino Pro Mini
- CNC Shield
Arduino CNC Shield V3
- DRV8825 or A4988.
You can find here 
A4988 DRV8825 Stepper Motor Driver
- Stepper from Scanner and Printer.
You can find here Aliexpress
- Relay to activate Dremel.
- You must create a board to eliminate noise from limit switch.
- I use HC-05 bluetooth to control the CNC because the noise of dremel is very high and I prefer control from another room (Explain connection here).
Program/firmware on Arduino
- You can find here the program to upload to arduino (I must change some property of code to use without speed regulator, my dremel is activated or deactivated without PWM, you can find code ready to upload in Arduino here).
Buy a mini CNC
I think It’s better if you wait my guide to build a low cost CNC, but other solution is to buy a little CNC, you can find It at very low cost.
You can find here 
CNC 1610 Pcb Milling Machine,Wood Carving machine
Instruments: FR4 Single Side Copper Clad Plate.
For the project I select a single side Copper clad plate 1.5mm thin.
You can find here Aliexpress
Exists 2 variant one with yellow (laminate) and other white material (Glass Fiber), the second one is better for milling.
Instruments: V Style Bit (20/30° Angle and 0.1mm Tip).
It’s very cheap bit I buy 10pcs for 4$, and work well.
I prefer this pyramid style because is more strong than standard V bits.
You can find here AliExpress
Instruments: Fritzing
A beautiful program to prototype board.
Instruments: FlatCam
A specified program to create gcode from Gerber file.
Instruments: GCode Sender
Universal GCode Sender
This program is simple and beautiful, but now I use bCNC because without autolevelling It’s very difficult to obtain perfect result, I write a guide soon.
http://winder.github.io/ugs_website/
bCNC
https://github.com/vlachoudis/bCNC
Thanks
In the next part we are going to examine Fritzing to draw our prototype board.
