MOTION_LOGGER.md

Motion logger with PIC16F18326, MPU9255, A1324LUA-T and EEPROM

I develop a small 9-axis motion logger with PIC16F18326 and MPU9255.

Typical applications in this project:

• measuring ride quality of public transport
• wearable/embeddeable motion sensor for sports

Note1: the MPU9250 sensor module I purchased from Amazon turned out to be MPU9255, because WHO_AM_I response is 0x73. Note2: MPU9250(incl. 9255) is not recommended for new designs.

Datasheet

• 8bit MCU "PIC16F18326"
• Nine-axis motion detector "MPU9255"
• Hall sensor "A1324LUA-T"
• EEPROM "AT24C256B"(256kbits)

Project documentation

• Specification draft
• Motion sensor schematic (main board)
• Speed sensor schematic (I2C slave device)
• Speed sensor CAD data for 3D printer

Code in development

• Motion sensor
• Speed sensor

Preliminary test on MPU9255

• Acceleration and angular velocity of a train (Jupyter Notebook)
• Free fall (Jupyter Notebook)

Deep learning with Keras/TensorFlow

I use the instrument to record data as an input for machine learning (training and testing):

• CNN on Keras/TensorFlow