SparkFun RedBoard Plus


Out of stock

Approx Restocking Date: 25 to 30 Days
SKU: 1037783
  1. ATmega328P MCU with Optiboot (UNO) bootloader
  2. Built-in resettable PTC fuse 5V/2A
  3. CH340G Serial-to-USB converter


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Brand: SparkFun
Category: Boards Compatible with Arduino
Tags: Development Board

SparkFun RedBoard Plus Development Board is an Arduino-compatible board that is similar to an Arduino Uno with many extra perks. This DEV-1858 development board utilizes a handy Qwiic Connect System that means no soldering or shields are required to connect it to the rest of the system. The RedBoard Plus board includes the hardware peripherals like 22x digital I/O pins with 6x PWM pins, 8x analog pins, UART, I2C, SPI, and external interrupts.

This board uses the LM1117 5V voltage regulator and AP2112 3.3V voltage regulator that provides up to 600mA to daisy chain multiple Qwiic boards and sensors. The RedBoard Plus board comes with an I/O voltage switch also known as the “Red Squirrel” switch. This Red Squirrel switch can easily select the GPIO voltage between 3.3V to 5V. RedBoard Plus can be programmed over a USB-C cable with 5V input voltage or through the barrel jack from 7V to 15V input voltage. This development board features 32kB flash memory, 16MHz clock speed, all SMD construction, R3 shield compatibility, and an improved reset button.

Data Download Link:


  1. Built-in resettable PTC fuse 5V/2A
  2. All SMD construction
  3. Improved reset button
  4. ATmega328P microcontroller with Optiboot (UNO) Bootloader

Package Includes:

1 x SparkFun RedBoard Plus

Input Voltage(V)

7-15 V

Output Voltage(V)

5 V

USB Type


Clock speed(MHz)

16 MHz

Flash memory


Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.027 kg
Shipping Dimensions 10.5 × 7 × 1 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: USA