DEV-18158 for SparkFun RedBoard for R3 ATmega328P USB Type‑C Microcontroller Development Board

DEV-18158 for SparkFun RedBoard for R3 ATmega328P USB Type‑C Microcontroller Development Board Description

DEV-18158 for SparkFun RedBoard is fully compatible with the popular R3 ecosystem, supporting most shields, libraries, and example codes. Ideal for users who want to migrate existing projects to a more robust and convenient board without changing their development habits.
Equipped with the classic ATmega328P microcontroller, this board delivers reliable 8-bit performance widely used in education, prototyping, and hobby projects. It supports standard bootloader and is programmable through the IDE and other compatible software tools.
The upgraded USB Type‑C interface offers a more durable and reversible connection compared with traditional USB‑B or micro‑USB . One cable can be used for both programming and power supply, providing a clean and convenient desktop setup for classrooms, labs, and makerspaces.
Designed with enhanced power circuitry, the RedBoard supports stable 5 V and 3.3 V outputs and includes protection features to help guard against incorrect connections and minor wiring mistakes. This makes it especially suitable for beginners and students in STEM education environments.

ATmega328P microcontroller with Optiboot () Bootloader

Input voltage

7V to 15V via barrels jack

5V via USB-C

Voltage Regulators

LM1117 adjusted to 5V

AP2112 for 3.3V

Built-in Resettable PTC Fuse 5V/2A

CH340G Serial-to-USB Converter

3.3V to 5V Logic Level

22x Digital I/O Pins (6x PWM Outputs, 8x Analog Inputs, 1x UART, 1x I2C, 1x SPI)

1x Qwiic Connector

A4/A5 Jumpers

2x3 ISP Header

32kB Flash Memory

16MHz Clock Speed

All SMD Construction

R3 Shield Compatible

Improved Reset Button
Color: Red
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