The MPU-6050 is an Inertial Measurement Unit comprising a MEMS 3-axis gyroscope and 3-axis accelerometer. The gyros provide angular velocity data; the accelerometers give relative 'g' ( acceleration due to earth's gravity ). Several were obtained, already mounted on evaluation boards. The project was to use it in a digital inclinometer. For this application, however, only the accelerometers were needed. The image below shows the setup used for developing software for the prototype. A digital angle meter was used for comparison. For the y-axis orientation in use, the inclination is displayed as negative degrees; a downwards slope.
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| (L) MPU-6050 evaluation board, (R) micro-controller/display board |
Two versions were completed, with or without a display and having different enclosure styles, suitable for whether the inclinometer would be visible or located remotely when in use. The display version is shown in the image below. It is indicating 0 degree inclination and 1 degree roll to the right when placed on a "flat horizontal" surface.
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| Display version of the Inclinometer in attractive enclosure with lid |
Both versions have Bluetooth functionality, enabling the inclination and roll meaurements to be displayed on a paired mobile device.
MEMS = Micro Electro Mechanical System.
An inclinometer would be a very useful accessory for my mobility scooter.
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