Description
The SparkFun IoT RedBoard is an ESP32 Development Board that includes everything but the kitchen sink! Espressif's ESP32 WROOM is a powerful WiFi and Bluetooth® MCU module that targets a wide variety of applications. At the core of this module is the ESP32-D0WDQ6 chip which is designed to be both scalable and adaptive. The IoT RedBoard can target a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming, and MP3 decoding. The IoT ReadBoard also utilizes our handy Qwiic Connect System which means no soldering or shields are required to connect it to the rest of your system!
The USB-to-serial is achieved with a USB-C connector with through hole anchoring and the ubiquitous CH340G requiring fewer driver installs. We've included 3.3V voltage translation and a Qwiic connector to the edge of the board to allow for quick and seamless connection to our ever-growing line of I2C based Qwiic products. The board even includes a microSD socket if your application requires you to log and save data to a memory card.
The operating system is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that users can upgrade their products even after their release, at minimum cost and effort.
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. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
Specification
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. CAN Specification 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)