Using MMA8452Q For tilt alarm detection

[mat66mat]

Hello ALL,

My project is to detect an angle of about +/- 40 ° relative to an initial position .

I am a newbie in accelerometer domain and the concepts covered in the data sheet are not very clear in my mind

I'll try to ask simple questions have simple answers

1°) Is it possible to do that with MMA8452Q ?

2°) Is there an application note that clearly explains the implementation of my project with the MMA8452Q ?

thank you very much

Sincerely

Jérôme.

[reyes]

Hi,

1) Yes, the MMA8452Q have an embedded orientation detection feature that can be used for a Tilt alarm detection.

2) Yes, there are some documents that can help you with this application:

1. 2.1) AN4068 “Embedded Orientation Detection Using the MMA8451, 2, 3Q”
2. 2.2) AN3461 “Tilt Sensing Using Three-Axis Accelerometer”

Additionally, if a +/- 45° angle detection can work for your application, I would like to recommend you to use the MMA8491Q, this accelerometer device as a 45° Tilt Sensor, it offers extreme ease of implementation by using a single line output per axis.

Have a great day,
Jose Reyes

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