Arduino Uno R3 SMD Compatible Board with CH340 USB

Arduino Uno R3 SMD Compatible Board with CH340 USB

The Arduino Uno R3 SMD compatible board uses an SMD (surface-mount) ATmega328P instead of the DIP package, making it more compact and vibration-resistant. Uses the CH340 USB-to-serial chip for programming via USB-B. Fully compatible with the Arduino IDE and all Arduino Uno R3 shields and libraries after installing the CH340 driver.

Key Specifications

• MCU: ATmega328P (SMD) | Clock: 16MHz
• Flash: 32KB | SRAM: 2KB | EEPROM: 1KB
• Digital I/O: 14 pins | PWM: 6 channels | Analog in: 6 channels
• Interfaces: UART / SPI / I2C | USB: USB-B (CH340)
• Operating voltage: 5V | Input: 7–12V DC jack or USB
• IDE: Arduino IDE compatible | Compliance: RoHS compliant

Why Choose This?

• ✅ SMD ATmega328P — more compact and vibration-resistant than DIP package
• ✅ Full Arduino Uno R3 shield compatibility — use all existing Uno shields
• ✅ Arduino IDE compatible — familiar development environment
• ✅ Cost-effective CH340 — same ATmega328P performance at lower price

Typical Applications

• Arduino learning and prototyping
• Sensor reading and data logging projects
• Motor and servo control with Arduino shields
• Home automation and IoT prototyping

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