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Beetle ATmega32u4 Arduino-Compatible Board

SKU: DFR0282

The Beetle ATmega32u4 is a compact, minimalized version of the Arduino Leonardo, providing the same powerful functionalities in a smaller form factor, ideal for projects requiring minimal space and full Arduino compatibility.

Detail of Beetle Board with USB and gold pins, compatible with Arduino Leonardo.-DFRobot product sku:DFR0282 image.

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    • Specification

    Parameter Details
    Microcontroller ATmega32u4
    Clock Speed 16 MHz
    Operating Voltage 5V DC
    Digital I/O Pins 10
    PWM Channels 4
    Analog Input Channels 5
    UART 1
    I2C 1
    Micro USB 1
    Power interfaces 2
    Flash Memory 32 KB of which 4KB used by bootloader
    SRAM 2.5 KB
    EEPROM 1 KB
    Physical Dimension 20mm22mm3.8mm

    Pinout

    Front View of the Circuit Board

    Front View of the Circuit Board

    • IO Port Mapping in correspondence with Arduino Port:
    Silkscreen Digital Pin PWM Channel Analog Channel UART I2C
    RX 0 Serial1
    TX 1
    SDA 2 SDA
    SCL 3 3 SCL
    9 9 9 A9
    10 10 10 A10
    11 11 11
    A0 A0 A0
    A1 A1 A1
    A2 A2 A2
    • Power interface description:
    Silkscreen Description
    + VCC
    - GND

    FAQ

    • Sometimes Leonardo Uart port will be locked by the sketch. It will lost its COM Port in Device Manager. There is a method to wake it up.
      Step1： There are 6 dots on the back of the module. This is ICSP interface. Please plug beetle to your usb cable. And watch your device manager. Using a cable to touch Pin 5 and Pin 6, then Beetle will reset. and Device manager should appear a COM port named "Arduino Leonardo bootloader (COM x)". After a few seconds, it will disappear. If you see this information you could go Step 2. Step2: Open your arduino IDE, and open any sketch like "Blink", select the board to "Leonardo". There is no COM port now. Just click "Upload". After IDE has completed verifying, touch the Pin 5 and Pin 6 immediately. You need try several times, because the correct time is not easy to be caught.

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