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FireBeetle 2 ESP32-C5-U(N4) IO Development Kit

SKU: DFR1284

The FireBeetle 2 ESP32-C5-U(N4) IO Expansion Kit consists of the main development board and a dedicated IO expansion baseboard. The baseboard breaks out all IO pins with functional zoning, enabling solder-free quick connection to various sensors to boost development efficiency. Powered by Espressif ESP32-C5-WROOM-1U-N4 module, this low-power IoT board targets smart home, industrial IoT and edge devices. It adopts a U.FL external antenna to prevent signal shielding from metal enclosures. Equipped with Espressif’s first dual-band 2.4GHz/5GHz Wi-Fi 6 chip, it delivers high-speed, low-interference 5GHz communication, while OFDMA and TWT technologies cut power consumption. Supporting Wi-Fi, Thread and Zigbee, it can build Matter end devices and gateways. It features versatile power management: lithium battery charging via Type-C, 5V DC and solar panels with a solar-optimized PMIC, plus battery level monitoring and switchable 3.3V output for long-term off-grid deployment.

Overview of FireBeetle 2 ESP32-C5-U(N4) IO Expansion Kit

Downloadable Resources

  • Tech Specs
  • Tutorials
  • Certifications

    • Specification

    Basic Parameters

    Parameter Details
    Operating voltage 3.3V
    Type-C input voltage 5V DC
    VIN input voltage 5V DC or 4.5-6V solar panel
    Maximum charging current 0.5A
    Sleep current 21μA (deep sleep mode, battery-powered)
    Module size 25.4x60mm

    Hardware Information

    Parameter Details
    Processor RISC-V single-core processor
    Main frequency 240 MHz
    SRAM 384KB
    ROM 320KB
    Flash 4MB
    LP SRAM 16KB

    WIFI

    Parameter Details
    WIFI frequency bands 2.4 GHz and 5 GHz, 1T1R
    WIFI protocols IEEE 802.11a/b/g/n/ac/ax
    > IEEE 802.11a/b/g/n (data rate up to 150Mbps)
    > IEEE 802.11ax (20 MHz-only non-AP mode)
    WIFI modes Station mode, SoftAP mode, SoftAP+Station mode, and promiscuous mode

    IEEE 802.15.4

    Parameter Details
    Frequency band 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
    Support Thread 1.3, Zigbee 3.0
    Compatible IEEE 802.15.4-2015 protocol

    Interface Pins

    Interface Details
    Digital I/O x18
    LED PWM controller 6 channels
    SPI x1
    UART x3 (LP UART x1)
    I2C x2 (LP I2C x1)
    I2S x1
    Infrared transceiver 5 transmit channels, 5 receive channels
    SAR ADC 1x 12-bit with 7 channels
    DMA controller 3 receive channels and 3 transmit channels

    Pinout

    Board Overview

    On-board Function Diagram

    Name Details
    Type-C Type-C USB port
    Charge Charging indicator light
    > Off: No power connected or fully charged
    > Steady on: Charging in progress
    15/D13 onboard LED pin
    RST Reset button
    28/BOOT GPIO28 pin/BOOT button
    BAT Lithium battery interface, supporting 3.7~4.2V
    IO1 Battery voltage detection pin
    3V3_C IO0 controls 3.3V power output, default off, can be turned on with high level.
    GDI GDI display interface
    ESP32-C5 Module model is ESP32-WROOM-1U-N4

    IO expansion board

    IO expansion board

    Pin Definition

    Pin Definition

    Pin overview is as follows:

    Pin Type Description
    Power Power pins
    > VIN: 5V DC input or 5V solar panel
    > 3.3V: 3.3V regulated power output
    > 3V3_C: IO0 programmably controls 3.3V power output, default off, turns on with high level
    GND Common ground pin
    GPIO ESP32 default GPIO number
    Arduino GPIO mapping of FireBeetle 2 ESP32-C6 in Arduino
    ADC ESP32 default analog-to-digital conversion pin
    I2C I2C interface
    > SDA/SCL: I2C mapping of FireBeetle 2 ESP32-C5 in Arduino
    > LP_SDA/SCL: Low-power I2C pins
    UART UART interface
    > LP_TX/RX: Low-power UART pins
    SPI SPI mapping of FireBeetle 2 ESP32-C5 in Arduino
    SDIO ESP32 default SDIO pins
    JTAG Debug interface

    GPIO Configuration

    GDI Display Interface

    This interface is a DFRobot-specific GDI display interface, which uses an 18pin-FPC cable to connect to the screen, making screen connection more convenient.

    The pin mapping is as follows:

    FPC PINS Firebeetle 2 ESP32-C5 PINS Description
    VCC 3V3 3V3
    LCD_BL 15/D13 Backlight
    GND GND GND
    SCLK 23/SCLK SPI clock
    MOSI 24/MOSI Master output, slave input
    MISO 25/MISO Master input, slave output
    LCD_DC 8/D2 Data/Command
    LCD_RST 26/D3 Reset
    LCD_CS 27/D6 TDT chip select
    SD_CS 3/A2 SD card chip select
    FCS NC Font library chip select
    TCS 6/D12 Touch chip select
    SCL 10/SCL I2C clock
    SDA 9/SDA I2C data
    INT 7/D11 INT
    BUSY NC Tear-proof pin
    X1 NC Custom pin 1
    X2 NC Custom pin 2

    When connecting the screen with an FPC cable, you only need to configure the corresponding pin numbers according to the GDL demo, usually only three pins need to be configured according to different main controllers.

    Displays supporting GDI:

  • CE CE
  • RoHS RoHS

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