Tools Required

• KiCad (for schematic and PCB design)
• Mods CE for toolpath generation
• CNC milling machine Wegstr Machining
• Double-sided PCB blank
• Soldering tools
• Multimeter etc

• Start a new project in KiCad

• Launch the Schematic Editor

• Add parts ( resistor, LED, button, 6-pin header)

My Objective

• Annotate schematic
• Assign footprints

• Perform ERC (Electrical Rules Check)

• Complete schematic with labeled components


2. KiCad PCB Layout Design

• Open PCB Editor

• Update PCB from schematic or import netlist


Final layout with board outline
DRC results

• Top copper trace export
• Outline layer export

• Load image (traces PNG)

• Select mill traces (1/64")

• Set cut depth: 0.1 mm, max depth: 0.1 mm, tool diameter: 0.4 mm
• Set origin (X=0, Y=0)

• Save the .rml or .nc file
• Repeat for cutout layer with mill outline (1/32")

• Mods CE interface with loaded image

• Toolpath preview for traces

• Toolpath preview for cutout

• Secure blank PCB on the CNC bed using tape

• PCB fixed on CNC bed
>
• Set X, Y, Z origins
• Run the traces toolpath


• Change bit and run cutout toolpath
• level the pcb board

• Milling in progress
• Final milled PCB board

• Now the circuit is ready

• Now the circuit got edgecut and the board is ready to assemble

🔌 6. Solder the Components

• Use flux and tweezers for SMD soldering

• Test each connection with multimeter
• Optionally test ISP or UART communication

• Soldering in progress
• Fully assembled board

• Multimeter testing

• Connect with USB-to-UART or ISP programmer
• Burn bootloader or test blinking code
• Use terminal to check serial response (if available)

• Board connected to computer




























• Terminal output (if serial used)
• LED blinking Programming

ul class="code-steps"

• // the setup function runs once when you press reset or power the board
• void setup() {
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  }
• // the loop function runs over and over again forever
• void loop() {
  digitalWrite(2, HIGH); // turn the LED on
  digitalWrite(3, HIGH);
  delay(700);
  
  digitalWrite(2, LOW); // turn the LED off
  digitalWrite(3, LOW);
  delay(700);
  }

Summary Checklist for Documentation