Circuitry Schematics

• Note: MCU & Related Circuitry can be found from CAD Layout
• Kill Switch / Pull Before Flight Pin (JPG)
• Regulator and Load Testing (JPG)
• Torque Coil Bi-Directional Current Circuit (JPG)

PCB Cad Layout

• ExpressPCB CAD File (PCB)
  • 5V / 12V Shows Regulator Connections
  • MCU Supporting components
  • LCD & Driver Circuit
  • Includes STK501 TQFP64 ZIF Socket Footprint
  • Includes Mega128 Solder Pad w/ Through Holes
• Rasterized Drawing (JPG)
• Vector 1:1 Printout (PDF)
• PCB Errors
  • PGM header should be connected to TX0 and RX0 rather than MISO/MOSI.
  • Short R3, R20, R37, R39, R41
  • Don't Populate R4, R19, R38, R40, R42
  • Pulldowns should be 330k
  • LEDs should be 330 ohms
  • Short Capacitors On Current Sensors For X Y Z coils.
    (Cap should be Vcc --> GND, not Vcc --> Port Pin)
  • Remove solder mask layer above LEDs & Power Resistors
  • Serial Port Startup issue remains unsolved