FireBeetle ESP32 IoT Microcontroller (Supports Wi-Fi & Bluetooth with 15 ESP32 Projects)

Introduction

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 electric current is just 10μA in the deep-sleep mode. 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
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
Price($)	$29.9	$14.9	$11.9	$18.9
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. Two way H-bridged Motor Driver with 2A maximum current and wireless socket.

You may also check Bluetooth microcontrollor selection guide for more information.

FireBeetle ESP32 IOT Microcontroller Size Comparsion

FireBeetle Board-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.

FireBeetle ESP32 IOT Microcontroller Details

Please kindly note that developers are the most common users of FireBeetle Board-ESP32 and not all of the peripherals have examples for reference, and there are still some bugs being found and fixed. For Arduino IDE, all GPIO function, I2C/SPI communication has been working. But the other functions are still under development. We recommend this board for experienced engineer.

Version Upgrade: 1. Add a new anti-reverse connection silk-screen. 2.Change the Lipo battery connecter direction.

ESP32 Bluetooth(BLE) Temperature Sensor

DFRobots Firebeetle ESP32 Capacitive touch test

Brew Probe - WiFi Temperature Monitor

Build a talking Alarm Clock synced to Google calendars

Hardware Components:

DFPlayer - A Mini MP3 Player For Arduino

FireBeetle Covers-24×8 LED Matrix (Blue)

FireBeetle ESP32 IOT Microcontroller

FireBeetle ESP32 Review

ESP32 Deep Sleep Tutorial for Low Power Projects

FireBeetle ESP32 review

Bluetooth Proximity Detection | FireBeetle ESP32

ESP32, more powerful than any other Arduino

Features

Compatible with products in the DFRobot FireBeetle serials

Low-power consumption(the electricity current under ultra-low power is 10μA)

Quick Response(the top frequency is 400KHz)

Cost-effective

Small size, convenient to install

Specification

Working voltage: 3.3V

Input voltage: 3.3V~5V

Support electric current of low power consumption: 10 μA

Support maximum discharge current: 600mA

Support maximum charge current: 500mA

Support USB charging.

Processer: Tensilica LX6 dual core processer (One for high speed connection; one for independent programing).

Frequency: 240MHz

SRAM：520KB

Flash：16Mb

Wi-Fi standard：FCC/CE/TELEC/KCC

Wi-Fi protocol: 802.11 b/g/n/d/e/I/k/r (802.11n, high speed can reach to 150 Mbps), converge A-MPDU and A-MSDU, supporting 0.4us protecting interval.

Frequency range: 2.4~2.5 GHz

Bluetooth protocol: Comply with BR/EDR/BLE standard of Bluetooth v4.2.

Bluetooth audio: the current under low power consumption of CVSD and SBC is 10μA

Working current: 80mA in average

Frequency range: 2.4~2.5GHz

Support one-key downloading.

Support micropython.

On-chip clock: 40MHz crystal and 32.768 KHz crystal.

Digital I/O: 10 (default setting of arduino)

Simulative input: 5(default setting of arduino)

SPI: 1 (default setting of arduino)

I2C: 1 (default setting of arduino)

I2S: 1 (default setting of arduino)

LED_BUILTIN：D9

Interface: FireBeetle series compatible

Working temperature: -40℃~+85℃

Dimension: 29 × 58(mm)/1.142 x 2.283(inches)

The dimension of mounting hole: inner diameter 3.1mm; outside diameter 6mm.

Documents

Product Wiki

Projects

Project 1. ESP32 Solar Weather Station

The system will be placed on my balcony and will retrieve temperature, humidity and air pressure. For this project you will need:

1x - DFRobot FireBeetle ESP32 IOT board

1x - DFRobot Gravity - I2C BME280

1x - DFRobot 3.7V Polymer Lithium Ion

1x - DFRobot Solar Lipo Charger

2x - 6V 1W Solar Panel

1x - Perfboard

1x - Female Header

1x - Enclosure/box

Wires

Screws

Project 2. How to Make a Smart Colorful Light

Today we will teach you How to Make a Smart Colorful Light Based On FireBeetle ESP32 IOT Microcontroller.

Hardware in need:

RGB LED Breakout (5050)
NPN Triode×1
FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth) ×1
FireBeetle Covers-Proto Board×1
Rotary Encoder EC11J×1
BME280×1

Project 3. How To Make a Step-Counter By Use Of The FireBeetle Board-ESP32

The instrument not just can record steps (and calories) at real time, but show time. What is special is that the format of showing is pointer.

Hardware in need:

FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth)

Project 4. FireBeetle Board-ESP32 Tutorials: Reforming a Small electric Fan

The instrument not just can record steps (and calories) at real time, but show time. What is special is that the format of showing is pointer.

Hardware in need:

FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth) × 1
FireBeetle Covers-Gravity I/O Expansion Shield× 1
Gravity: I2C OLED-2864 Display × 1
BME temperature-humidity sensor × 1
EC11J rotary encoder × 1
9g micro servo (1.6kg) × 1
Dupont line × 10
Crust By Overlord 3D printer × 1

Project 5. Application Tutorials of FireBeetle Board - ESP32 BLE: Smarten a Plugboard

What you have seen is a smart plugboard that converted by ESP32 master board and controlled by BLE of ESP32.

Hardware in need:

Project 6. How to Make an Temperature Measurement Gun

An Application Tutorial of FireBeetle ESP32 Make an Temperature Measurement Gun with Noncontact IR Temperature Sensor MLX90614

Hardware List

FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth) ×1
Gravity: Non-contact IR Temperature Sensor for Arduino ×1
Gravity I2C OLED-2864 Display ×1
3.7V 400mAh Lithium battery ×1
Red laser transmitter (diameter: 6mm) ×1
C&K slide switch ×1
3D printing crust set (2 parts) ×1

Project 7. How to Make an Mail Alarm

This time using a PIR sensor and an ESP32 to send an email every time that movement is detected.

Hardware components:

FireBeetle ESP32 IOT Microcontroller *1
Digital Infrared Motion Sensor For Arduino *1
Sealed Membrane 4*4 button pad with sticker *1
5mm LED Pack (50 pcs) *1
220R Resistor *1
Perfboard *1

Project 8 How to Make a Name Badge with Tricolor E-ink Display
Things you may need in this project:

FireBeetle Covers-ePaper Black&White&Red Display Module ×1

FireBeetle ESP32 IOT Microcontroller ×1

3.3V Micro Lithium Battery ×1

Push-Button Switch ×1

TUTORIAL

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