Digiching Code

Digiching Code is an ESP32-S3 project that displays live motion and voltage data on a compact SPI screen. It reads accelerometer and gyroscope values from an MPU6050 sensor and shows a live analog voltage reading on a 128x128 display [file:43][file:44].

Features

• Live accelerometer readings from the MPU6050.
• Live gyroscope readings from the MPU6050.
• Voltage monitoring from an analog input.
• 128x128 SPI display output using TFT_eSPI.
• Sprite-based drawing for smoother screen updates.
• Built for the ESP32-S3 DevKitC-1 with PlatformIO and Arduino [file:44].

Hardware Setup

Required hardware

• ESP32-S3 DevKitC-1.
• MPU6050 sensor.
• Compatible 128x128 SSD1351 SPI display.
• Analog input source for voltage measurement.
• USB cable for power and uploading.

Display wiring

Connect the display using these pins:

• SCLK → GPIO 12
• MOSI → GPIO 11
• CS → GPIO 10
• DC → GPIO 13
• RST → GPIO 14 [file:44]

Sensor wiring

Connect the MPU6050 using I2C. Make sure the sensor has power and ground connected, and wire SDA and SCL to the pins used in your setup.

Analog input

The sketch reads analog voltage from GPIO 4 [file:43].

Getting Started

Install PlatformIO

Install PlatformIO in VS Code if you do not already have it.

Open the project

Open the repository folder in VS Code with PlatformIO support enabled.

Build and upload

Use the PlatformIO terminal:

pio run
pio run --target upload

Open the serial monitor

pio device monitor

How It Works

On startup, the board initializes the display, MPU6050 sensor, and analog input. It briefly shows a welcome message, then continuously updates the screen with accelerometer, gyroscope, and voltage readings [file:43].

Troubleshooting

Display is blank

• Check the display wiring.
• Confirm the screen matches the configured driver and resolution.
• Make sure the display is powered correctly.
• Verify the TFT_eSPI configuration matches your hardware [file:44].

MPU6050 is not showing data

• Check the I2C wiring.
• Confirm the sensor is powered.
• Make sure the MPU6050 address is correct.
• Rebuild and upload the sketch again [file:43].

Voltage reading looks wrong

• Confirm the analog input is connected to GPIO 4.
• Make sure the voltage stays within the safe ADC range for the ESP32-S3.
• Check the wiring and ground reference [file:43].

Upload fails

• Verify the correct board is selected in PlatformIO.
• Use a USB cable that supports data.
• Reconnect the board and try again [file:44].

Text is clipped or misaligned

• Confirm the display is 128x128.
• Adjust sprite size, font size, or cursor position if needed [file:43].

Project Structure

• main_screen.cpp — Main application code [file:43].
• platformio-2.ini — PlatformIO project configuration and library setup [file:44].

Notes

• The project is currently configured for a 128x128 display.
• If you change the display or board, you may need to update the configuration [file:44].

License

Add your license here if you plan to publish the project publicly.

Acknowledgements

Built with:

• ESP32 and Arduino.
• PlatformIO.
• Adafruit sensor libraries [file:44].
• TFT_eSPI [file:44].