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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 |
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. |
The small size and high performance makes FireBeetle become idea solution for IOT low power consumption projects.
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.