HMD Glass

Created by [Mokhtar Alaa Abd-Elhafiz mejahid] • Started on June 14, 2025

A head-mounted autonomous robot that recognizes, maneuvers, and alerts via camera and sensors

Total Time Spent: 87 Hours


Day 1 - June 14

Time Spent: 6h
Activities:
- Brainstormed idea of wearable robot frame
- Researched embedded vision in small spaces
- Explored use cases in fall detection robotics


Day 2 - June 15

Time Spent: 5h
Activities:
- Sketched initial HMD frame for ESP32-WROOM mounting
- Compared ESP32-CAM and RPi Camera in size, power, and clarity
- Drafted sensor dataflow (gyro → microcontroller → GSM)


Day 3 - June 16

Time Spent: 6h
Activities:
- Modeled frame in Fusion 360 with component cavities
- Verified mounting stability of SIM800L
- Simulated vision cone overlap with actual camera FOV


Day 4 - June 17

Time Spent: 4h
Activities:
- Found suppliers for high CRI glass and protective covers
- Compared ABS vs PLA for head comfort and shock absorption
- Refined ear-hook design for frame


Day 5 - June 18

Time Spent: 5h
Activities:
- Simulated fall angles using MPU6050 and threshold algorithms
- Tested Bluetooth connectivity range between modules
- Designed GSM alert conditions


Day 6 - June 19

Time Spent: 4h
Activities:
- Drafted logic diagram of entire HMD system
- Searched low-latency serial adapters for camera uploads
- Estimated frame weight distribution


Day 7 - June 20

Time Spent: 6h
Activities:
- Refined power flow diagram: battery → charger → ESP32
- Simulated overcurrent protection in charging circuit
- Documented average current draw during idle vs alert mode


Day 8 - June 21

Time Spent: 4h
Activities:
- Compared SMS latency in SIM800L on multiple carriers
- Simulated random tilt events and alert performance
- Added logging triggers to decision logic


Day 9 - June 22

Time Spent: 4h
Activities:
- Reviewed foam padding options for forehead and ear area
- Simulated heat dissipation with ventilation gaps in the shell
- Cleaned up wiring routes in CAD


Day 10 - June 23

Time Spent: 5h
Activities:
- Tested wiring breadboard layout virtually
- Labeled all modules and points for real-world assembly
- Calculated real battery life under vision load


Day 11 - June 24

Time Spent: 5h
Activities:
- Designed dashboard mockup for viewing tilt and image stats
- Logged false positives in simulated fall conditions
- Adjusted gyroscope sample rate for smoother results


Day 12 - June 25

Time Spent: 4h
Activities:
- Adjusted frame hole sizes for snug camera fit
- Explored camera alignment with front glass curvature
- Finalized code block sequence for boot-to-alert loop


Day 13 - June 26

Time Spent: 4h
Activities:
- Reviewed SIM800L power needs with GSM spikes
- Tested relay control for emergency shutdown
- Simulated dead zones in visual detection


Day 14 - June 27

Time Spent: 5h
Activities:
- Designed glass holder with vibration isolation
- Simulated opponent tracking through various lighting conditions
- Optimized camera shutter timing to reduce motion blur


Day 15 - June 28

Time Spent: 4h
Activities:
- Cleaned up simulation reports
- Created image logs of vision tests
- Documented fall scenarios and edge cases


Day 16 - June 29

Time Spent: 5h
Activities:
- Modeled and rendered final headset design
- Created documentation index for all parts
- Edited journal entries for clarity


Day 17 - June 30

Time Spent: 5h
Activities:
- Built README.md and wiring illustrations
- Labeled real PCB and added callouts
- Captured final renders and angle views


Day 18 - July 1

Time Spent: 6h
Activities:
- Reviewed full submission checklist
- Organized repo folders and file hierarchy
- Finalized all documentation for submission


Images

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  • THE CONNECTIONs
  • both 3-Axis accelerometer and 3-Axis gyroscope
  • angular velocity used equation
  • acceleration equation used
  • SHOWS THE electronics AS A WI-FI STATION.