Difference: MagicWandOld (9 vs. 10)

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META TOPICPARENT	name="TinyML"

The Magic Wand Example

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The magic wand example shows how to detect gestures using an accelerometer. Different types of accelerometers are easily available:

The ADXL345 is a tree axis digital accelerometer by Analog Devices
I wrote a pure MircoPython driver for the ADXL345 available at https://github.com/uraich/IoT-Course/tree/master/exercises/solutions/exercise_16/adxl345.
The MPU6050 is a six axis device (Gyro and Accelerometer) from Ivensense. It is described by its datasheet and the register description document.
Jeff Rowberg has written a very complete MPU6050 driver for the Arduino in C++, which includes access to its Digital Motion Processor, whose description cannot be found anywhere on the WEB. I ported this driver to MicroPython together with a few example programs drafted after Jeff's C++ examples: https://github.com/uraich/IoT-Course/tree/master/exercises/solutions/exercise_16/mpu6050.

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The MPU9250 is very similar to he MOU6050 but has a magnetometer in addition. The MPU92/66 has the necessary pins to be accessed either through I2C or SPI.

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The MPU9250 is very similar to he MPU6050 but has a magnetometer in addition. Here is its data sheet and the register map. The MPU92/66 has the necessary pins to be accessed either through I2C or SPI.

The LIS2DH MEMS digital output motion sensor from ST Microelectronics is an ultra low power high performance 3 axis accelerometer.