Type-C PD Power Supply with Monitoring based on Arduino

Project for small power supply using a USB Type-C Power Delivery (PD) trigger to negotiate 20V, step down for logic power, and provide up to 28V 3A output. Monitors real-time voltage and current using an INA219 sensor and displays them on an OLED.

🛠️ Hardware Used

• USB Type-C PD trigger (set to 20V)
• Buck converter (20V ➔ 5V)
• Buck-boost converter (input 20V, output adjustable up to 28V)
• INA219 current/voltage sensor (I2C)
• 0.96" OLED (SSD1306, 128x64, I2C)
• Arduino-compatible board (Nano/Uno/ESP32 etc.)

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📦 PlatformIO Setup

1. Clone this repo
2. Install PlatformIO
3. Edit platformio.ini as needed for your board
4. Build and upload:

   pio run -t upload