Would it help to upgrade firmware? How can I find out what firmware I have and an update is needed? I tried other things e.g. changing physical wires, changing sensor, closing and re-opening the IDE, etc but the issue of Device ID still stands.

Correct. It compiles fine.

Actually it should be:

Pins.GPIO_PIN_D0

Thanks for looking into this. Below was a typo.

NO, the original wiring is correct and it matches all documents (two above) and what you say below.

When reading http://www.sparkfun....ter/ADXL345.pdf page 8 Figure 4. 4, I see:

/CS (pin 7 on the ADXL345, which must to a random GPIO for Netduino indeed)
SDI (also known as SDA/SDIO, pin 13 on the ADXL345, which must go to netduino MOSI; Netduino pin D11)
SDO (also known as ALT ADDRESS, pin 12 on the ADXL345, which must go to netduino MISO; Netduino pin D12)
SCLK (also known as SCL, pin 14 on the ADXL345, which must go to netduino SPCK; Netduino pin D13)

So you switched pins 11 and 12.

Thanks for the reply. Both seem to be acting the same. Both compile and both are available in auto complete. Both randomly fail Device ID between each compile.

I changed it to suggested

Pins.GPIO_Pin0

since it matches documentation to be on safe side.

but the same issues exist.

It's safer to use your suggestion due to my original reference to Wiki page: http://wiki.netduino...figuration.ashx and http://wiki.netduino...SPI.ashx?HL=spi

Orange, to solve one problem, just change:

Cpu.Pin.GPIO_Pin0

To:

Pins.GPIO_Pin0

Basically, the Pins enumeration is a Netduino remapping of the abstract Cpu.Pin set exposed by the Micro Frameowrk.

I know, it's confusing...
Cheers