Troubleshooting

Switching to SPI

As we've covered before in this tutorial, using either KX13x Breakout in SPI mode requires a slight modification to the board. The ADR Jumper must be completely opened so the ADR/SDO pin is floating prior to being connected to the SPI controller's SDI/COPI pin. Also, make sure the controller the KX13x Breakout connects to runs at 3.3V logic to avoid damaging the IC. Using either accelerometer breakout with a 5V controller requires level shifting the signal.