DFRobot FireBeetle ESP32
Compact ESP32 IoT microcontroller with dual-core Xtensa LX6 at 240MHz, WiFi 802.11 b/g/n, Bluetooth 4.2, 16MB flash, 520KB SRAM, 10 digital I/O, 5 analog inputs, onboard LiPo charging, 10uA deep sleep, and 250+ tutorials.
$8.90
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Specifications
Certifications
Components
Espressif ESP-WROOM-32 with Xtensa LX6 dual-core at 240MHz, 520KB SRAM, 16MB flash, WiFi 802.11 b/g/n, Bluetooth 4.2 BR/EDR + BLE.
GPIO Map
Overview
The DFRobot FireBeetle ESP32 (SKU: DFR0478) is a compact WiFi and Bluetooth IoT development board built around the ESP-WROOM-32 module. With a Tensilica LX6 dual-core processor at 240MHz, 520KB SRAM, and 16MB flash, it provides solid processing power for connected IoT projects in a small 29 x 58mm form factor. It is one of the original FireBeetle boards and comes with over 250 tutorials covering everything from initial setup to advanced development.
The board exposes 10 digital I/O pins, 5 analog inputs, and standard bus interfaces including SPI, I2C, UART, I2S, and an SD card interface. WiFi supports 802.11 b/g/n with FCC/CE/TELEC/KCC certification, while Bluetooth 4.2 provides both classic BR/EDR and BLE modes with 10 microamp low-power current. A built-in LED on D9 is available for basic status indication.
Power management features include an onboard lithium battery charging circuit supporting 3.7V LiPo cells with 500mA charge current and 600mA LDO discharge. The board automatically switches between USB and battery power sources. Deep sleep current as low as 10 microamps makes it excellent for battery-powered sensor deployments. The operating temperature range of -40 to +85 degrees Celsius supports both indoor and outdoor installations.
Use Cases
6IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Smart Home
Home automation devices for controlling lighting, climate, security, and appliances.
Environmental Monitoring
Monitoring environmental conditions like temperature, humidity, air quality, and weather data using remote sensors.
Battery Powered Sensor Node
Low-power sensor nodes running on battery for wireless data collection and monitoring.
Educational Platform
Development boards suitable for teaching programming, electronics, and embedded systems concepts.
Weather Display
A dedicated screen that shows weather information including current conditions, temperature, humidity, pressure, and multi-day forecasts.
Where to Buy
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