2 layers24.1 × 36.2 mm
Esp32miniBT
asterics/esp32_mouse_keyboard
ESP32 implementation for HID over GATT Keyboard and Mouse (Bluetooth Low Energy). Including serial API for external modules (similar to Adafruit EZKey HID)
28 parts911GPL-3.0
4 layers52.3 × 44.4 mm
Posture Corrector
james-yu2005/Posture-Corrector1Hybrid IoT and Computer Vision Wearable for Posture Monitoring
- Size
- 52.3 × 44.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 3
- Nets
- 40
- Pads
- 70
- Tracks, vias
- 17, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 16 Feb 2025
- Updated
- 10 May 2025
Overview
Posture Corrector is an open-source printed circuit board by james-yu2005, from the james-yu2005/Posture-Corrector repository on GitHub. It is a 4-layer board of 52.3 × 44.4 mm with 3 parts on 40 nets, routed with 17 tracks and 4 vias.
It is built around the ESP32-WROOM-32. It belongs with the wearables boards and the ESP32 boards of this library.
Main components
1README
README.md🎯 Posture Corrector Device
🎥 Demo Videos
Explore both iterations in action:
- ▶️ ESP32 + OpenCV-based Posture Corrector (2nd Iteration)
- ▶️ Arduino-based Posture Corrector (1st Iteration)
📁 Watch the Demo Videos on Google Drive
🧠 Overview
A wearable device that uses real-time sensor feedback and computer vision to promote proper posture.
This device monitors upper back and neck posture using an MPU-6050 sensor and a custom OpenCV model. Upon detecting poor posture, it emits an audible alert via a buzzer to notify the user.
🔧 First Iteration (Prototype)
- Built using an Arduino Uno R3, MPU-6050, and a breadboard.
- Detected angular deviations in back posture and triggered a buzzer during slouching.
🚀 Second Iteration (Refined)
- Upgraded to an ESP32 microcontroller for wireless communication and improved performance.
- Integrated an OpenCV + MediaPipe model to track neck posture using webcam input and calculate head tilt angles.
- Real-time communication between OpenCV and ESP32 triggers the buzzer when poor neck posture is detected.
- Designed a 3D-printed wearable enclosure using SolidWorks to house the electronics.
- 📂 Computer vision source code: OpenCV Posture Model
🛠️ Hardware Improvements
- Designed a custom PCB to replace the breadboard, enhancing compactness, reliability, and ease of assembly.
- A new SolidWorks 3D enclosure is in development for the updated hardware version.
Parts
3| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U1 |
| 1 | MPU6050_Module | Charleslabs_Parts:MPU6050_Module | A1 |
Questions
How big is the Posture Corrector PCB?
It measures 52.3 × 44.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Posture Corrector use?
3 parts, built around the ESP32-WROOM-32. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Posture Corrector KiCad files?
From the james-yu2005/Posture-Corrector repository on GitHub, at the commit this page was made from: the board is pcb/posture_corrector.kicad_pcb and its schematic pcb/posture_corrector.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Posture Corrector design in my own project?
Its repository states no licence, so its author keeps all rights: ask james-yu2005 before reusing the design.
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