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Home/Robotics/Development Tools/ESP32 & ESP8266/DFRobot FireBeetle 2 ESP32 – 4MB Flash

FireBeetle 2 ESP32-E IoT Microcontroller with Header

DFRobot FireBeetle 2 ESP32 – 4MB Flash

SKU:

25-00016646

Part Number: DFR0654-F

Headers:

Without Headers With Pre-soldered Headers

CompanyDFRobot Part NumberDFR0654-F

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€13⁶⁰

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€12⁸⁰	In Stock + − ΑΓΟΡΑ	25-00010600	Headers: Without Headers
€13⁶⁰	In Stock + − ΑΓΟΡΑ	25-00016646	Headers: With Pre-soldered Headers

Description
Specifications

FireBeetle 2 board, specially designed for IoT, is an ESP-WROOM-32E-based main controller board with dual-core chips.

It supports WiFi and Bluetooth dual-mode communication and features a 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 2 supports Arduino programming 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 your PCB, greatly saving your costs and time to build and test prototype.

What's the difference between FireBeetle 2 ESP32 (4MB Flash) and FireBeetle ESP32?

FireBeetle 2 uses a data encryption chip to protect program security
FireBeetle 2 is equipped with a DFRobot GDI(General Display Interface) to connect screens like DFR0664/DFR0649/DFR0665/DFR0669
FireBeetle 2 can not use an expansion board for FireBeetle

DFRobot SKU	DFR0478	DFR0654
Board	FireBeetle ESP32	FireBeetle 2 ESP32 (4MB Flash)
Microcontroller	ESP32-D	ESP32-E
Power Supply Interface	Micro USB	USB-C
USB to UART	CH340C	CH340K
Operating Voltage (V)	3.3V	3.3V
Flash	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)	29x58	25.4x60
Weight (g)	24	23

PSRAM Cache Bug Fix: Fixed “When the CPU accesses the external SRAM in a certain sequence, read & write errors can occur”.Espressif has recently released one wafer-level change on ESP32 Series of products: ESP32-E. Below are the main design changes in ESP32-E Series of chips:

Fixed “When each CPU reads certain different address spaces simultaneously, a read error can occur.”
Optimized 32.768 KHz crystal oscillator stability, the issue was reported by client that there is a low probability that under ESP32-D hardware, the 32.768 KHz crystal oscillator couldn’t start properly.
Fixed fault injection issues regarding secure boot and flash encryption are fixed.
Improvement: Changed the minimum baud rate supported by the CAN module from 25 kHz to 12.5 kHz.

Technical data

Operating Voltage: 3.3V
Input Voltage: 3.3V~5.5V
Support Low-Power: 10uA
Max Discharge Current: [email protected] LDO
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: 32Mbit
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 Temperature: -40℃~+85℃
Module Size: 25.4x60mm
Mount Hole Size: inner diameter of 2.0mm
GDI Display Port, easy to connect
Onboard Charging Circuit and PH2.0 lithium Battery Interface