SparkFun RedBoard Plus ATmega328P Development Board USB-C

The SparkFun RedBoard Plus ATmega328P Development Board USB-C is an Arduino-compatible board powered by a 16 MHz ATmega328P microcontroller, with added functionality built on the familiar Uno design.

Overview

The SparkFun RedBoard Plus is an updated, Arduino-compatible development board that builds on the familiar Uno design with added functionality. Ideal for makers, educators, and hobbyists, it offers a wide range of I/O options and modern connectivity in a compact, solder-friendly format. At its core, the board runs the ATmega328P microcontroller with the Optiboot (Uno) bootloader at a 16 MHz clock speed, with 32 kB of flash memory.

Key Features

• 22 digital I/O pins, 6 PWM outputs, and 8 analogue inputs
• SDA, SCL, and IOREF pins broken out, with UART, I2C, and SPI interfaces for sensors and peripherals
• Integrated Qwiic functionality for quick, solderless connections to the Qwiic ecosystem of sensors and displays
• USB-C connectivity for both power and data transfer
• Barrel connector accepting 7-15V DC
• Built-in voltage regulators and a 3.3V/5V logic level switch
• Resettable PTC fuse rated at 5V/2A for overcurrent protection
• CH340G serial-to-USB converter for reliable programming and communication
• Labelled PTH holes alongside standard female headers
• Fully compatible with R3 shields

Applications

The RedBoard Plus is suited to prototyping and easy soldering, and its R3 shield compatibility opens up a range of expansion options. It is a practical choice for makers, educators, and hobbyists working on a variety of projects.

Specifications

• Microcontroller: ATmega328P with Optiboot (Uno) bootloader
• Clock speed: 16 MHz
• Flash memory: 32 kB
• Digital I/O pins: 22
• PWM outputs: 6
• Analogue inputs: 8
• Interface: UART, I2C, SPI
• Connectivity: USB-C for power and data; barrel jack for 7-15V DC
• Logic level switch: 3.3V to 5V
• Fuse: Resettable PTC fuse rated 5V/2A
• Weight: 10 gm

Choose the SparkFun RedBoard Plus when you need an Arduino-compatible board with USB-C connectivity, Qwiic support, and a compact, solder-friendly layout for your next project.