topic MMA8652FC motion detection interrupt in Sensors https://community.nxp.com/t5/Sensors/MMA8652FC-motion-detection-interrupt/m-p/335905#M935 <HTML><HEAD></HEAD><BODY><P>I've been able to configure a MMA8652FC 3-Axis accelerometer to generate interrupts on free-fall events by playing with both FF_MT_CFG and FF_MT_THS registers. After this experience, I'd like the sensor to generate an interrupt when motion is detected. I'm thinking in detecting usual movements like taking an object from a table "in a natural way", but even when setting FF_MT_THS (detection threshold) to a minimum value the interrupt is only generated with fast movements. This is maybe why this functionality is called free-fall/motion detection...</P><P></P><P>Can I really use the MMA8652FC to detect slower movements in an interrupt-generation basis?</P><P></P><P>Thanks again.</P><P></P><P>Daniel.</P></BODY></HTML> Tue, 03 Feb 2026 23:02:10 GMT estratos 2026-02-03T23:02:10Z MMA8652FC motion detection interrupt https://community.nxp.com/t5/Sensors/MMA8652FC-motion-detection-interrupt/m-p/335905#M935 <HTML><HEAD></HEAD><BODY><P>I've been able to configure a MMA8652FC 3-Axis accelerometer to generate interrupts on free-fall events by playing with both FF_MT_CFG and FF_MT_THS registers. After this experience, I'd like the sensor to generate an interrupt when motion is detected. I'm thinking in detecting usual movements like taking an object from a table "in a natural way", but even when setting FF_MT_THS (detection threshold) to a minimum value the interrupt is only generated with fast movements. This is maybe why this functionality is called free-fall/motion detection...</P><P></P><P>Can I really use the MMA8652FC to detect slower movements in an interrupt-generation basis?</P><P></P><P>Thanks again.</P><P></P><P>Daniel.</P></BODY></HTML> Tue, 03 Feb 2026 23:02:10 GMT https://community.nxp.com/t5/Sensors/MMA8652FC-motion-detection-interrupt/m-p/335905#M935 estratos 2026-02-03T23:02:10Z Re: MMA8652FC motion detection interrupt https://community.nxp.com/t5/Sensors/MMA8652FC-motion-detection-interrupt/m-p/335906#M936 <HTML><HEAD></HEAD><BODY><P>I reply myself: pulse events can be used with low thresholds to detect simple movements.</P></BODY></HTML> Tue, 05 Aug 2014 17:47:36 GMT https://community.nxp.com/t5/Sensors/MMA8652FC-motion-detection-interrupt/m-p/335906#M936 estratos 2014-08-05T17:47:36Z