February 23, 2010
about 5 years ago
Join the club.. I have been working for weeks on trying to read register values from this sensor (4-Wire SPI). Many have had issues with this sensor and are not able to read a simple DEVID from it or even get it powered up. I have yet to try this from Sondergaard:
It would appear that the ADXL345 SDO line – at least when configured for 4-wire SPI, the only configuration I’m testing – is VERY SENSITIVE TO RINGING.
I STRONGLY RECOMMEND applications insert a damping resistor in series with the ADXL345 SDO line. I used 27 ohms here to solve the problem.
So I think I will try that next.. I have even been confirming the data I am sending with a digital memory scope.. This sensor does not like to respond correctly, or at all!
No public wish lists :(
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