SparkFun IoT RedBoard - ESP32 Development Board

Item number 59333 Brand Sparkfun Model WRL-19177 Share Write a review
SparkFun IoT RedBoard - ESP32 Development Board

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The SparkFun IoT RedBoard is a versatile ESP32 Development Board that comes packed with a multitude of features. It is built around the powerful ESP32-D0WDQ6 chip, a WiFi and Bluetooth® MCU module by Espressif that is designed to be both scalable and adaptive. This board is perfect for a wide range of applications, from low-power sensor networks to demanding tasks like voice encoding, music streaming, and MP3 decoding. The IoT RedBoard also features the Qwiic Connect System for quick and easy connections to your system without the need for soldering or shields.

The board uses a USB-C connector for USB-to-serial functionality, which requires fewer driver installs thanks to the ubiquitous CH340G. It includes 3.3V voltage translation and a Qwiic connector for seamless connection to the expanding line of I²C based Qwiic products. The board is also equipped with a microSD socket for data logging and a 2-pin JST connector for attaching a single cell, LiPo battery. It even has a built-in LiPo charge IC (MCP73831) and fuel gauge (MAX17048).

The operating system of the IoT RedBoard is freeRTOS with LwIP. It supports TLS 1.2 with hardware acceleration and secure (encrypted) over the air (OTA) upgrades, allowing users to update their products with minimal cost and effort, even after release.

The SparkFun Qwiic Connect System is an ecosystem of I²C sensors, actuators, shields, and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector, reducing the amount of required PCB space and preventing incorrect connections with its polarized design.


  • CPU and On­Chip Memory
    • ESP32-D0WD-V3 embedded, Xtensa dual-core 32-bit LX6 microprocessor, up to 240MHz
    • 448KB ROM
    • 520KB SRAM
    • 16KB SRAM in RTC
  • Wi­Fi
    • 802.11b/g/n
    • Bit rate: 802.11n up to 150Mbps
    • A-MPDU and A-MSDU aggregation
    • 0.4µs guard interval support
    • Center frequency range of operating channel: 2412 ~ 2484MHz
  • Bluetooth®
    • Bluetooth® V4.2 BR/EDR and Bluetooth® LE specification
  • Peripherals
    • microSD card, UART, SPI, SDIO, I2C, LED PWM,Motor PWM, I2S, IR, pulse counter, GPIO,capacitive touch sensor, ADC, DAC, TWAI® (compatible with ISO 11898-1, i.e. CANSpecification 2.0)
  • Integrated Components on Module
    • 40MHz crystal oscillator
    • 4/8/16 MB SPI flash
  • 4-pin Qwiic Connector
  • 2-pin JST Connector for Single Cell, LiPo Batteries
  • Built-in LiPo Charge IC (MCP73831)
    • Default Charge Rate: 500mA
  • LiPo Fuel Gauge (MAX17048)
  • LEDs
    • CHG
    • PWR
    • RX/TX
    • User LED
    • Addressable RGB LED (WS2812)


  • Schematic
  • Eagle Files
  • Board Dimensions
  • Hookup Guide
  • How to Install CH340C Drivers
  • Fritzing Part
  • Arduino IDE Download
  • Qwiic Info Page
  • Compare SparkFun RedBoards
  • Arduino Buying Guide
  • GitHub Hardware Repo


Brand information
Brand Sparkfun
More infoIoT RedBoard ESP32 Development Board Hookup Guide - SparkFun Learn
Size info
Length59 mm
Width72 mm
Height13 mm
Weight55,5 g
€ 38,15€ 31,50 Excl. VAT (NL)
Out of stock In stock with supplier
Delivered in 5 to 10 days
Shipped from € 3,50 (NL) 30 days cooling-off Excellent service

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