DFRobot FireBeetle series is the low-power consumption micro-controller intentionally designed for Internet of Things (IoT) projects. FireBeetle Board - ESP32 integrates a Dual-Core ESP-WROOM-32 module, which supports MCU and Wi-Fi &Bluetooth dual-mode communication. The main controller supports two power supply methods: USB and 3.7V external lithium battery. And both USB and external DC can charge the Lipo battery directly. Name WiDo Beetle ESP32 FireBeetle ESP8266 FireBeetle ESP32 SKU DFR0321 DFR0575 DFR0489 DFR0478 Microcontroller CC3000 ESP32 ESP8266 ESP32 Power supply interface USB or DC2.1 USB USB or 3.7V Lipo USB or 3.7V Lipo USB Powered or External (V) 7 - 12 3.5 - 6.5 3.3 - 5.0 3.3 - 5.0 Operating Voltage (V) 5V 3.3V 3.3V 3.3V CPU Frequency (MHz) 16 240 160 240 Flash(M) - 16 16 16 SRAM(KB) - 520 50 520 Analog pins 6 4 1 5 Digital pins 14 4 10 10 Wi-Fi protocol 802.11b/g 802.11b/g/n 802.11b/g/n 802.11b/g/n Frequency range 2.4 GHz 2.4 - 2.5 GHz 2.4 - 2.5 GHz 2.4 - 2.5 GHz UART 1 1 1 1 I2C 1 1 1 1 I2S 1 1 1 1 SPI 1 1 1 1 Compatible IDE Arduino IDE 1.6+ Arduino IDE 1.6+ Arduino IDE 1.6+ Arduino IDE 1.6+ Download Mode Micro USB Micro USB Micro USB Micro USB Arduino UNO Compatible √ × × × Lipo Charger Support × √ √ √ Dimension(mm) 75*54 35*34 58*29 58*29 Weight (g) 30 g 12 g 24 g 24 g Key Features On board 2.4G PCB Antenna and SD card slot. Integrate a Dual-Core ESP-WROOM-32 module. Support MCU and Wi-Fi &Bluetooth dual-mode communication. V shaped gilded I/O interface, can be sewn on clothes directly. Arduino、RTOS、microPython Programming Support. Built-in 32-bit Tensilica L106 MCU and 10-bit ADC. Mobile BLE APP Connection Support. You may also check Bluetooth microcontrollor selection guide for more information. firebeetle esp32 has made a special hardware design for Arduino IDE. You can make a download without switching boot-mode manually. It supports Arduino, IDF (linux), micropython etc. Moreover, FireBeetle made a pin mapping for Arduino IDE. It can be configured with Dx transport, compatible with arduino UNO and reduce the entry barrier. The small size and high performance makes FireBeetle become idea solution for IOT low power consumption projects. Version Upgrade: 1. Add a new anti-reverse connection silk-screen. 2. Change the Lipo battery connecter direction. Compatible with products in the DFRobot FireBeetle serials
