Adapter Board

 

Adapter Board Top Side

130825203223_SAM_2516_c

Adapter board on the left and Cubieboard on the right. The cable between the boards is 5V supply voltage. Main components on the adapter board are

  • DC/DC converter (small red PCB)
  • Connector for resistive touchscreen (lower left corner)
  • 3 solder jumpers (2x display mirror, 1x brightness fixed or controlled by processor board)
  • Connector for 30pin FPC cable to Pixel Qi display (left side)
  • Self resetting polyfuse for Cubieboard and adapter board
  • 3x 10 pin connectors for extensions, each with I2C, SPI, 2x GPIO and power
  • 1x 12 pin connector to RJ45 extension board (4x RX/TX, 2x GND, 2x 12V)
  • 3.3V regulator for display supply (lower right corner)

 

Adapter Board Bottom Side

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  • Fuse for reverse polarity protection (lower left side)
  • 2x MAX3232 for UART voltage level conversion

Cubieboard and Adapter Board assembled

130825203229_SAM_2521_c

The 3.3V regulator available on our shelf had the wrong pinout, and two touchscreen connectors for 1mm and 1.25mm pitch FPC are installed to accomodate different types – it´s a prototype after all 😉

 

SAM_2527_c

RJ45 Extension Board

SAM_2511_c

Four RJ45 sockets with IGC compatible pinout allow connection of FLARM and loggers with a simple RJ45 cable. Each socket has its own self resetting polyfuse to avoid multiple failures of one device trips the fuse.

SAM_2513_c