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bike_computer

Repo Structure

bike_computer
│   LICENSE
│   README.md
│   
├───CAD
│   ├───SolidWorks
|   |       <all solidworks parts>
|   |       <solidworks assembly>
|   |
│   ├───STEP
│   │       case_batteryHolder_prototype.STEP
│   │       case_bottom_prototype.STEP
│   │       case_top_testPrototype.STEP
│   │       hub_case_testPrototype.STEP
│   │
│   └───STL
│           case_batteryHolder_prototype.STL
│           case_bottom_Prototype.STL
│           case_hubMount_prototype.STL
│           case_top_testPrototype.STL
│
├───learning
│   ├───central_ble_imuData
│   │       central_ble_imuData.ino
│   │
│   ├───central_HRM_learning
│   │       central_HRM_learning.ino
│   │       nRF_Connect_Results.md
│   │
│   ├───imu_9dof_printData
│   │       imu_9dof_printData.ino
│   │
│   ├───Matlab Analysis
│   │       dataAnalysis.mlx
│   │       TestDataLog.xlsx
│   │
│   ├───OLED_featherwing_test
│   │       OLED_featherwing_test.ino
│   │
│   └───peripheral_ble_imuData
│           peripheral_ble_imuData.ino
│
└───SRC
    ├───central_HUD
    │       central_HUD.ino
    │
    └───peripheral_hubSensor
            peripheral_hubSensor.ino

Description

A wireless bicycle Heads-up-display (HUD) that displays rotations-per-minute (RPM) and heart rate (HR). This project consists of 2 main parts, the HUD and a hub mouted speed sensor. The HUD connectects to an external heart rate sensor for HR data.

This project is designed to transform a 'dumb' indoor bicyle trainer into a more effective device by informing the user of their current RPM and HR.

Hardware:

Final product
  • Adafruit Bluefruit Sense Feather
  • Adafruit nRF52840 Feather
  • Polar H10 Heart Rate Sensor
  • Slide Switch (2)
  • 400 mA Lipo (2)
  • 26 AWG silicone hook-up wire
  • stacking female header
  • Custon 3-D printed Enclosures
Testing and Validation
  • Hall effect sensor
  • Magnets

bike_computer's People

Contributors

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bike_computer's Issues

Add filter to RPM data

  • Convert gyro reading (rad/s) -> RPM
  • Create moving average filter
  • tune display update rate

Send 9dof data from Sense Board to Express via BLE

Sense will be spinning to emulate being on the hub, data is streamed to Express and viewed/saved from Arduino serial port

  • Make Arduino sketch that prints LSM6DS33 + LIS3MDL - 9 DoF IMU with Accel / Gyro / Mag data
  • Connect both feathers are central + peripheral
  • Stream data and save results

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