STM32 PCB Design Project

STM32F103C8T6 Dev Board (Custom PCB)

This repository contains the complete KiCad project files for a custom development board based on the STM32F103C8T6 microcontroller, commonly used in embedded systems and ARM Cortex-M3 learning platforms.

Designed by: Chirag Wadkar
Toolchain: KiCad 5.1.15

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🔧 Features & Specifications

• Microcontroller: STM32F103C8T6 (ARM Cortex-M3, 72 MHz, 64 KB Flash, 20 KB RAM)
• Voltage Regulation: AMS1117-3.3 LDO with LED power indicator
• Power Supply: USB Micro-B (VBus) → 3.3V regulated
• External Oscillator:
  • 16 MHz crystal connected to PD0 (HSE_IN) & PD1 (HSE_OUT)
• USB Interface:
  • USB Micro-B connected to PA11 (D-) and PA12 (D+)
  • 1.5kΩ pull-up resistor on D+
• Communication:
  • UART: PB6 (TX), PB7 (RX)
  • I2C: PB10 (SCL), PB11 (SDA)

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📷 Screenshots

🔌 Schematic View

💻 PCB Layout

🧱 3D Render

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🔌 Powering & Programming

• Power Input: USB Micro-B (VBus 5V → Regulated to 3.3V)
• Programming Methods:
  • Via USB (DFU mode)
  • External SWD programmer via SWDIO/SWCLK pins.