DFR0282

DFR0282 Datasheet


Beetle SKU:DFR0282

Part Datasheet
DFR0282 DFR0282 DFR0282 (pdf)
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Beetle SKU:DFR0282

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Beetle

Contents
• 1 Introduction
• 2 Specification
• 3 PinOut
• 4 Tutorial
o Power o Programming o Example Code
• 5 Trouble shooting

Introduction

The “Beetle” is a minimalized version of Arduino Leonardo, and has same powerful functionalities as Leonardo. It is ideal for DIY projects, wearable projects and etc. Its key features
• 20mm X 22mm compact size
• Direct downloading and testing via Micro USB
• IO ports make it convenient for the user to twist wires upon,
and can also be directly sewn on clothes with conductive thread.
• Two honeycomb shape power interface
• Magic light blue soft BLINK indicator

Beetle is fully compatible with Arduino,please select “Arduino Leonardo” when using.

Specification
• 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 KB
• EEPROM 1 KB
• Physical Dimension 20mm*22mm*3.8mm

PinOut

Beetle front look

Beetle back look
• IO Port Mapping in correspondence with Arduino Port:

Silkscreen Digital Pin PWM Channel Analog Channel UART I2C

Serial1
• Power interface description Silkscreen +

Description VCC GND

Tutorial

Power

Power supply via micro USB or power interface.

Programming

Beetle is fully compatible with Arduino link for more details in the only difference is to select "Arduino Leonardo " ("tools board Arduino Leonardo" in Arduino

Example Code

All codes for Arduino Leonardo can apply to Beetle.

Note #This product uses DC power supply with a working voltage of 5V. 6V will dama ge the product by overvoltage. This product works reliably between
4.5V-5V it may work under 3V-4.5V, but the reliability is not guaranteed. #For large load applications such as motor control , you need to connect the loaded VCC and GND directly with power supply, and parallel with capacitor over 10uF, in order to prevent restart or malfunction caused by lar ge load transient. #In Arduino environment, Beetle has the same features as Leonardo with multip le serial ports, Serial used for USB virtual port Serial1 used for RX/TX port.

Trouble shooting

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.

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

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.

Use has been normal, after loading a new program, the computer can not find the virtual serial Beetle?

After eliminating the cable connection problems, then this question is that t he new program is loaded affect the USB communication. Beetle / Leonardo USB is implemented by the appropriate software Arduino IDE implemented ,it and the user program are on the ATMEGA32U4, If the user program affects the USB-related operations will lead to see the U SB virtual serial port. At this time we need to reload the available user program such as blink .If the Beetle / Leonardo has lost cont act with can't automatically reset,it needs to be loaded manually reset resets through a short jumper RESET and GND of ICSP interface to achieve.
interface

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Datasheet ID: DFR0282 508704