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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.
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| 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 |
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USB Powered or External (V) |
7 - 12 |
3.5 - 6.5 |
3.3 - 5.0 |
3.3 - 5.0 |
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Operating Voltage (V) |
5V |
3.3V | 3.3V |
3.3V |
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CPU Frequency (MHz) |
16 |
240 |
160 |
240 |
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Flash(M) |
- |
16 |
16 |
16 |
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SRAM(KB) |
- | 520 | 50 | 520 |
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Analog pins |
6 | 4 | 1 | 5 |
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Digital pins |
14 | 4 | 10 | 10 |
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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 |
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UART |
1 | 1 | 1 | 1 |
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I2C |
1 |
1 |
1 |
1 |
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I2S |
1 |
1 | 1 | 1 |
| SPI |
1 |
1 |
1 |
1 |
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Compatible IDE |
Arduino IDE 1.6+ |
Arduino IDE 1.6+ |
Arduino IDE 1.6+ |
Arduino IDE 1.6+ |
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Download Mode |
Micro USB |
Micro USB |
Micro USB |
Micro USB |
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Arduino UNO Compatible |
√ |
× |
× |
× |
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Lipo Charger Support |
× |
√ |
√ |
√ |
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Dimension(mm) |
75*54 |
35*34 |
58*29 |
58*29 |
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Weight (g) |
30 g | 12 g | 24 g | 24 g |
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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
Project 2. How to Use Bluetooth(BLE) With ESP32
Introduction: Learn how to use the ESP32 board to send temperature reading over Bluetooth Low Energy.
Project 3. ESP32, more powerful than any other Arduino
Project 4. Controlling Air Conditioner temperature automatically with ESP32
Introduction: This tutorial teaches you how to fetch the real-time weather data with a microcontroller and how to mimic the air conditioner remote control that uses IR (Infrared) technology to control the AC using an IR transmitter.
Project 5. Solar Weather Station Using ESP32
Introduction: This project aims at building a Weather Station and send the data to your channel. The system will be placed on the balcony and will retrieve temperature, humidity and air pressure.
