FitBuddy

Competitively exercise against your friends, push yourself for a high rank, and improve your form, all from the safety of your own home.

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Inspiration

  • Before the pandemic, I would often work out at my local gym after my Grade 11 Physics Class, during lunch break
  • It then closed so I tried to start a routine of calisthenics at home
  • I managed to maintain the routine for a week before I naturally became lazy and gave up
  • I had no motivation
  • So during this hackathon, I decided to set out and find a way to bring motivation into physical activity

What it does

  • You can challenge your friends to a workout battle (pushups, situps, squats, etc.)
  • The FitBuddy Device on your wrist monitors your form and movement with its sensors
  • It counts your reps and updates them in the app view
  • You push yourself until either you or your opponent forfeit
  • There is a ranking system (Bronze, Silver, Gold, Platinum, Diamond, Ultimate)
  • Based on your wins, losses, form, and other variables, you are assigned a rank
  • Keep pushing yourself and try to rank up!
  • The app computes the motion numbers through a trained algorithm that gives you tips on how to improve your form

How I built it

  • iOS App

    • XCode + Swift
    • Firebase + Firestore
      • Controls Entire Back-End Friends Network
      • Real Time Synchronization
      • User Profiles
      • Friend Links
      • Email and Password Control
      • Form Improvement Tips
      • Other Smaller Features

  • FitBuddy Device

    • Arduino Nano
    • Bluetooth LE Chip
    • 3-Axis Accelerometer
    • 3-Axis Gyroscope
    • 3-Axis Magnetometer
    • Pulse Sensor
    • 18650 Lithium Battery + Recharge Circuit

Challenges I ran into

  • Using Bluetooth with iOS and Swift, made me crazy haha
  • Battery Circuit Voltage Dropout Every 5 seconds
  • Creating Physical Enclosure

Accomplishments that I'm proud of

  • The App, looks well done design-wise
  • The Pairing Process, just tap the phone to the device!
  • The Physical Device, doesn't look half bad!

What I learned

  • How to use BLE with iOS + Arduino
  • How to convert Acc+Gyro+Mag angles into an accurate angle reading
  • How to use a pulse sensor

What's next for FitBuddy

  • PCB Design with all components
  • Clean up the app and release it to the app store
  • Create a 3D Printed physical enclosure
  • Create User Security Rules in Firebase
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