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Netduino GO! Module Builder's Guide

Design Guidelines¶

Requirements¶

• The socket notch faces outside the board.
• Mounting holes are on 5×5 mm grid.
• Must be able to signal the mainboard on the IRQ/GPIO pin (socket pin #3)
• Module must use no more than 60 mA during startup, and must be able to run at 60 mA indefinitely (modules will be able to request more power, but these requests may be denied)
  

• 0.1uF decoupling capacitor on Vdd, located near the microcontroller's power input pins
• At least one or two additional 1.0uF decoupling capacitors (not explicitly required, but recommended)
• 1.0uF capacitor connected between Vcap and ground
• 0.1uF capacitor connected between NRST and ground
• GO! Bus pin 4 should be connected to STM8S SWIM pin
• GO! Bus pin 5 should be connected to STM8S NRST pin
  

Recommendations¶

• The socket shrouding is 1.5 mm away from the edge.
• Mounting holes should be 3.0 mm (tight fit) or 3.2 mm (loose fit) in diameter.
  

GO! Bus¶

See Also¶

• Netduino Go schematics (pdf)
  

GO! Socket¶

Pinout¶

1. 3V3
2. 5V
3. GPIO+/IRQ
4. UART_RX (from module's perspective)
5. UART_TX (from module's perspective)
6. SPI_SS
7. SPI_MOSI
8. SPI_MISO
9. SPI_SCK
10. GND
    

Prototyping¶

• Gadgeteer Expansion Module (Sytech Designs)
• Dual Row 1.27mm Pitch 10-Pin Female Header to DIP-10 Adapter (Proto Advantage)
• TSSOP-20 to DIP-20 SMT Adapter (0.65 mm pitch) (Proto Advantage)
  

See Also¶

• Netduino GO! Hacking – Breaking out sockets
  

Electronic Parts¶

See Also¶

• Where to get .NET Gadgeteer and Netduino GO compatible 10 pin IDC sockets, and how to solder them
  

• Where to buy STM8S003F3 in single qty
  

Software¶

See also ¶

• Netduino GO! Module Firmware Development