DFRobot
FireBeetle ESP32-E IoT Microcontroller with header (Supports Wi-Fi Bluetooth)
FireBeetle ESP32-E, specially designed forIoT, is an ESP-WROOM-32E-based main controller board with dual-core chips. It supports WiFi and Bluetooth dual-m...
FireBeetle ESP32-E, specially designed forIoT, is an ESP-WROOM-32E-based main controller board with dual-core chips.
It supports WiFi and Bluetooth dual-mode communication, and features small size, ultra-low power consumption, on-board charging circuit and easy-to-use interface, which can be conveniently used for smart home IoT, industrial IOT applications, wearable devices and so on. You can easily create your own IoT smart home system when connecting it with an IoT platform like IFTTT.
FireBeetle ESP32-E supportsArduinoprogramming, and will support Scratch graphical programming and MicroPython programming very soon. We provide you with detailed online tutorials and application cases, and there are thousands of sensors with welding-free Gravity interface and actuators to help you get started easily. Besides, the stamp hole design makes it able to be easily embedded in yourPCB, greatly saving your costs and time to build and test prototype.
We sell two versions of Firebeetle ESP32-E, unsoldered version and with header version. If you want to plug the firebeetle shield to your firebeetle mainboard, the Firebeetle Board ESP32-E(Pre-soldered) is better for you.
Figure 1. Board Overview
Figure 2.Pinout
What's the difference between FireBeetle ESP32-E and FireBeetle ESP32
Name
ESP32 IoT Microcontroller
ESP32-E IoT Microcontroller
SKU
DFR0478
DFR0654
Microcontroller
ECO
ECO V3
Power supply interface
Micro USB
USB-C
USB to UART
CH340C
CH340K
Operating Voltage (V)
3.3V
3.3V
Flash(KB)
16MB
4MB
SRAM(KB)
520k
520k
Analog pins
5
5
Digital pins
10
10
UART
1
1
I2C
1
1
SPI
1
1
side key
×
√
RGB_LED
×
√
DisplayPort（GDI）
×
√
stamp holes
×
√
fool-proof
×
√
Silkscreen
underside
two-sided
Mount Hole Size（mm）
3.5
2
Dimension(mm)
29*58
25.4×60
Weight (g)
24 g
23g
Price($)
6.9
6.9
Espressif has recently released one wafer-level change on ESP32 Series of products (ECO V3). Below are the main design changes in ECO V3 Series of chips:
1. PSRAM Cache Bug Fix: Fixed “When the CPU accesses the external SRAM in a certain sequence, read & write errors can occur”.
2. Fixed “When each CPU reads certain different address spaces simultaneously, a read error can occur.”
3. Optimized 32.768 KHz crystal oscillator stability, the issue was reported by client that there is a low probability that under ECO V1 hardware, the 32.768 KHz crystal oscillator couldn’t start properly.
4. Fixed Fault injection issues regarding secure boot and flash encryption are fixed.
5. Improvement: Changed the minimum baud rate supported by the CAN module from 25 kHz to 12.5 kHz.
FEATURES
- ESP32 Dual-core low power maincontroller, 10uA power consumption
- WiFi+Bluetooth 4.0 Dual-mode Module
- GDI Display Port, easy to connect
- Onboard Charging Circuit and PH2.0 lithium Battery Interface
SPECIFICATION
- Operating Voltage: 3.3V
- Input Voltage: 3.3V~5.5V
- Support Low-Power: 10uA
- Max Discharge Current:600mA@3.3VLDO
- Max Charge Current: 500mA
- Support USB Charging
- Processor: Tensilica LX6 dual-core processor (One for high-speed connection; one for independent application development)
- Main Frequency: 240MHz
- SRAM: 520KB
- Flash: 4MB
- Wi-Fi Standard: FCC/CE/TELEC/KCC
- Wi-Fi Protocol: 802.11 b/g/n/d/e/i/k/r (802.11n，speed up to 150 Mbps), A-MPDU and A-MSDU Aggregation, support 0.4us guard interval)
- Frequency Range: 2.4~2.5 GHz
- Bluetooth Protocol: Bluetooth v4.2 BR/EDR and BLE standard compliant
- Bluetooth Audio: CVSD and SBC audio
- Operating Current: 80mA（Average）
- Support Arduino download with one-key
- On-chip Clock: 40MHz crystal, 32.768KHz crystal
- Digital I/O x10（Arduino default）
- Analog Input x5（Arduino default）
- SPI x1（Arduino Default）
- IIC x1（Arduino Default）
- I2S x1（Arduino Default）
- RGB_LED: 5/D8
- Connector: FireBeetle V2 series compatible
- Operating Tempeature: -40℃~+85℃
- Module Size: 25.4×60mm/1×2.36”
- Mount Hole Size: inner diameter of 2.0mm
DOCUMENTS
- Product wiki
SHIPPING LIST
- FireBeetle Board ESP32-E with Header x1
- 18pin-2.54mm Pitch Pin x1
- 18pin-2.54mm Pitch Pin Female x1
- 14pin-2.54mm Pitch Pin x1
- 14pin-2.54mm Pitch Pin Female x1
Jargon buster
Plain-language definitions for the technical terms used above.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- BLE
- BLE stands for Bluetooth Low Energy, a Bluetooth mode designed for lower power use and modern phone compatibility. It matters because BLE support can make the module easier to use with Apple devices and battery-powered projects, though it may behave differently from classic serial Bluetooth.
- DisplayPort
- A digital display interface used to connect monitors and other video displays. It matters because the supported DisplayPort version affects display resolution, refresh rate and monitor compatibility.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2S
- I2S is a digital audio interface used to send sound data between chips, such as from a microcontroller to an audio amplifier or DAC. It matters if your project needs cleaner digital audio output than a basic buzzer or PWM signal can provide.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- MicroPython
- A version of the Python programming language made to run on microcontrollers. It matters because it lets beginners write readable code to control LEDs, sensors, motors and displays without needing to start with lower-level languages.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
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