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sparkfun / SparkFun_MPU-9250-DMP_Arduino_Library

Arduino library for the MPU-9250 enabling its digital motion process (DMP) features.
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Bricked 3 mkr zero boards with this card - advice please!! :( #30

Closed jon2000 closed 5 years ago

jon2000 commented 5 years ago

I am trying to get the 9250 working but am falling at the first hurdle. I am trying to run the code at the hookup guide tutorial, but after it compiles and runs my mkrzero is then bricked. By board three I was super careful - checking resistance between vcc/gnd on the 9250 to check for shorts and I could hook up the board to the mkr zero vcc,gnd, scl and sda and run 'blink' and all is fine - nothing blows yet. BUT as soon as I run the example code, that's it - nothing.
Any advice very gratefully received!!

bboyho commented 5 years ago

Hi,

I have not used the Arduino Zero on the MPU9250 before but it is a SAMD21. Try hitting the reset button twice to see if it re-enumerates if you have not already. The microcontroller has a built-in CDC so there are two COM ports as stated in the MKRZero's FAQ. From my experience with the SAMD21 with a different project, it may switch to another COM port after uploading code.

Looking into the library, I think I might have another idea but I would need to look into it further.

Otherwise, I recommend checking in the SparkFun Forums if you have not already. => https://forum.sparkfun.com/.

jon2000 commented 5 years ago

Hey bboyho, awesome the double reset brings the boards back to life! I thought I had read a lot but missed this trick.