SparkFun Thing Plus - ESP32 WROOM (Micro-B)

The SparkFun ESP32 Thing Plus is a versatile tool for IoT projects, offering a wealth of features and capabilities in one compact package. It's built around the powerful ESP32-D0WDQ6 chip, which is scalable and adaptive to a range of applications. The board is Feather compatible for easy use and features the Qwiic Connect System, eliminating the need for soldering or shields to connect it to your system.

The Thing Plus is aptly named for its wide-ranging functionality. It can perform tasks as simple as turning on an LED, or as complex as posting data with your chosen platform. It can be programmed like any microcontroller, and even supports programming through the Arduino IDE with the updated ESP32 Arduino Core.

The Thing Plus boasts a rich array of peripherals, including capacitive touch sensors, an SD card interface, Ethernet, high-speed SPI, UART, I²S and I²C. The onboard ESP32 WROOM module provides 16MB of flash memory, 520kB of internal SRAM, an integrated 802.11 BGN WiFi transceiver, dual-mode Bluetooth capabilities, and a JST connector for a LiPo battery.

The SparkFun Qwiic Connect System is an innovative ecosystem that makes prototyping faster and less error-prone. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This design minimizes the required PCB space and the polarized connections prevent incorrect hookups.

The Thing Plus features 21 multifunctional GPIO, including up to thirteen 12-bit ADC Channels, two DAC channels, sixteen PWM outputs, eight capacitive touch pins, three SPI Busses, an I²S Audio Output, two I²C Busses, and two UARTs. It also includes LEDs and buttons, a micro-B USB Connector, and a 2-pin JST Connector for a LiPo Battery. The board measures 6.48cm x 2.29cm and features two mounting holes compatible with 4-40 screws.

The ESP32 WROOM module operates at a voltage of 2.3 to 3.6 V, with a deep sleep current of 2.5 µA and an average operating current of 80 mA. It can function at temperatures ranging from -40 to 85 °C. The module features a Xtensa® Single-Core 32-bit LX6 Microprocessor that can operate at up to 240MHz, 448KB of ROM and 520KB SRAM, and 16MB of Embedded SPI flash storage. It also includes an integrated 802.11b/g/n WiFi 2.4GHz transceiver, integrated dual-mode Bluetooth, and hardware accelerated encryption.