A multi-functional display project for the Waveshare ESP32-S3-Touch-AMOLED-1.75 development board, featuring five horizontally swipeable pages with distinct functionality.

This project creates an interactive round display interface with five main pages:

• Cyan Stopwatch: A digital stopwatch with a cyan theme
• Yellow Stopwatch: A digital stopwatch with a yellow theme
• Magenta Stopwatch: A digital stopwatch with a magenta theme with LAP reset
• G-Meter: Real-time signed G-force display with min/max tracking and color-coded warnings
• Turn Indicator: Aircraft-style turn/rate slip/skid indicator derived from IMU data

• Development Board: Waveshare ESP32-S3-Touch-AMOLED-1.75
  • Product Wiki
  • 1.75" Round AMOLED Display (466x466 pixels)
  • Capacitive Touch Screen
  • QMI8658 6-axis IMU (Accelerometer + Gyroscope)

• Touch Navigation: Horizontal swiping between pages using LVGL Tileview
• Dual Independent Stopwatches: Two separate timing functions with different themes
• Artificial Horizon: Real-time attitude display using ESP-DSP Extended Kalman Filter for optimal accuracy
• Advanced Sensor Fusion: ESP-DSP library implementation with optimized filtering parameters
• G-Force Monitoring: Real-time load factor calculation with color-coded warnings and click-to-reset max G tracking
• Performance Optimized: Motion threshold-based updates (1° sensitivity), adaptive task scheduling, and ~60 FPS rendering
• Clean Code Architecture: Modular design with eliminated code duplications, optimized includes, and improved memory efficiency
• Robust Error Handling: Comprehensive error checking and graceful failure recovery

This project uses the ESP-IDF framework with the following components from the ESP-IDF Component Registry:

• LVGL Graphics Library: lvgl/lvgl (v9.3.0) - GUI framework for all display elements
• QMI8658 Driver: waveshare/qmi8658 (v1.0.1) - IMU sensor driver for accelerometer/gyroscope data
• Board Support Package: waveshare/esp32_s3_touch_amoled_1_75 (v1.0.1) - Display and touch drivers

.
├── CMakeLists.txt
├── main/
│   ├── main.c
│   ├── CMakeLists.txt
│   ├── idf_component.yml
│   └── components/
│       ├── cyan_stopwatch/
│       │   ├── cyan_stopwatch.c
│       │   └── cyan_stopwatch.h
│       ├── yellow_stopwatch/
│       │   ├── yellow_stopwatch.c
│       │   └── yellow_stopwatch.h
│       ├── magenta_stopwatch/
│       │   ├── magenta_stopwatch.c
│       │   └── magenta_stopwatch.h
│       ├── g_meter/
│       │   ├── g_meter.c
│       │   └── g_meter.h
│       ├── turn_indicator/
│       │   ├── turn_indicator.c
│       │   └── turn_indicator.h
│       ├── imu/
│       │   ├── imu.c
│       │   └── imu.h
│       ├── aircraft_selector/
│       │   ├── aircraft_selector.c
│       │   └── aircraft_selector.h
│       └── aircraft_header/
│           ├── aircraft_header.c
│           └── aircraft_header.h
├── managed_components/
├── partitions.csv
├── sdkconfig.defaults
└── README.md

1. ESP-IDF Setup: Install ESP-IDF development environment following the official guide
2. Hardware: Waveshare ESP32-S3-Touch-AMOLED-1.75 development board

1. Clone the repository:

   git clone <repository-url>
   cd chrono-g

2. Build the project:

   idf.py build

3. Flash to device:

   idf.py flash

4. Monitor output:

   idf.py monitor

• The visibility manager (see main/visibility_manager.h) tracks which tile is active and notifies components so they can avoid unnecessary UI updates when hidden.
• The IMU module (main/components/imu) handles gyro calibration and provides filtered accel/gyro samples to the G-Meter and Turn Indicator.
• Stopwatches use independent timers and custom seven-segment fonts for display.
• When adding new tile components, follow the existing pattern: provide a <component>_set_visible(bool) function and integrate it into main.c tile setup and the visibility manager.

This project is open source. Please refer to the license file for details.