News: Undergraduate students at the Utah State University (USU) have successfully launched the first Pi-powered satellite into orbit. The GASPACS CubeSat, which was sponsored by NASA,
features a Raspberry Pi Zero computer, a second-gen Pi Camera Module, and a DFRobot Beetle microcontroller to facilitate basic tasks at a low price. Read more.

Beetle is fully compatible with the Arduino Leonardo board. It derives its core notion
from minimalism without compromising functionality.

It comes with Atmel ATmega32U4 (datasheet)
@16MHz clock time and has expanded amounts of interfaces: 10 digital pins, 5 analog pins, and 4 pwn pins. To further make it user-friendly, it is compatible with Micro
USB so that direct programming and testing is no longer a headache. Select “Arduino Leonardo (tools – board – Arduino Leonardo in Arduino IDE), the ATmega32U4 comes pre burned with a bootloader that allows you to upload any new code that is applicable to Arduino Leonardo.

As the DFRobot smallest board compatible with Arduino Leonardo, it enjoys similar powerful functionalities. Beetle aims to solve problems of the low-cost controller, ease-of-using properly, and to provide a low-cost solution for disposable projects, such as DIY projects, workshops, gift projects, E-Textiles, and educational. For students and makers who can not afford too much on hardware purchasing, Beetle can be a great solution for them.

• 20mm X 22mm compact size
• Direct downloading and testing via Micro USB
• V-shaped large-size gold-plated 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 gold-plated power interface
• Magic light blue soft BLINK indicator

• 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 Ports: 2 
• Flash Memory:  32 KB of which 4KB used by bootloader
• SRAM:  2.5 KB
• EEPROM:  1 KB
• Size: 20mm*22mm*3.8mm

• Wiki
• Schematic
• Review by One Mans Anthology
• Adafruit’s Trinket vs DFRobot’s Beetle – Review and Comparision (Video)
• Beetle: Minimize Your Arduino Projects (Instructables)

• Beetle x1

Bluno combines the user-friendly nature of Arduino with the wireless prowess of Bluetooth 4.0, offering an efficacious and pliable solution for IoT projects. Featuring an ATmega328 microcontroller and an integrated BLE chip, Bluno empowers developers to effortlessly exchange data with Bluetooth devices, without the need for delving into intricate Bluetooth protocols. The board boasts a plethora of I/O interfaces, support for a wide range of sensors and actuators. Compatible with the Arduino IDE, Bluno serves as an exemplary choice for prototyping and testing applications encompassing home automation, environmental monitoring, and automated control.

Compatible with Arduino Programming

Bluno is programmed using the Arduino IDE, rendering it user-friendly for individuals already acquainted with Arduino. This feature allows for instant utilization without the need to acquire new programming tools or adapt to unfamiliar environments. Additionally, its compatibility with Arduino ensures access to a vast array of resources, such as a multitude of Arduino libraries and example code. These resources greatly expedite the development process and alleviate difficulties. Furthermore, Bluno benefits from a solid backing of community support. The Arduino community thrives as an active and open-source network comprising countless developers and enthusiasts. This vibrant community makes it effortless to seek assistance, exchange knowledge, and share experiences.

Supports Arduino Shields and Various Sensors

Bluno follows the standard Arduino pin layout, encompassing interfaces for digital I/O, analog input, PWM, I2C, SPI, and UART. Consequently, Bluno can seamlessly accommodate a wide range of Arduino-compatible shields. This advantageous feature enables the utilization of existing Arduino shields and sensors without necessitating additional hardware purchases for compatibility with Bluno. As a result, development and prototyping costs are effectively reduced.

Multiple Wireless Capabilities

Bluno supports Bluetooth data transmission, enabling wireless communication between a smartphone or another Bluno device. This is achieved through straightforward “Serial.write” and “Serial.read” commands for sending and receiving Bluetooth data. Moreover, Bluno provides the added convenience of wireless programming. Once two devices are connected, you can effortlessly upload code from one Bluno to another one. This streamlined process simplifies updates and enhances overall flexibility.

DFRobot Bluno series is an Arduino-compatible Bluetooth 4.0 (BLE) hardware solution designed by makers, and for makers. All Bluno products are Bluetooth 4.0 ready, and enjoy features such as wireless programming, smart App controlling, long communication range, and plentiful periphery modules.

Introduction to Bluno Series

• On-board BLE chip: TI CC2540
• Wireless Programming via BLE
• Support Bluetooth HID
• Support AT command to config the BLE
• Transparent communication through Serial
• Upgrade BLE firmware easily
• DC Supply: USB Powered or External 7V~12V DC
• Microcontroller: Atmega328
• Bootloader: Arduino Uno ( disconnect any BLE device before uploading a new sketch )
• Compatible with the Arduino Uno pin mapping
• Size: 60mm * 53mm(2.36″*2.08″)
• Weight: 30g

Introduction: KnowFlow is the name of this water quality monitoring device, based on “Arduino Uno”. It can automatically monitor 5 parameters of water: pH, Temperature, Dissolved Oxygen, Electronic Conductivity, ORP.

Project 2. How to Make an Automatic Christmas Tree

Introduction: With all the lights and decorations that people use at Christmas, power is left on all the time and electricity bills skyrocket. I made this motion detecting Christmas tree light setup that only turns on when people are nearby.

Project 3. How to Make a Santa Alarm

Introduction: Using the new RGB color sensor available at DFRobot, I rigged up a simple proximity alarm. I can use this to warn myself if someone is in a close range of my Christmas tree putting presents under there. The hardware of this project is pretty simple and suitable for beginners.

Project 4. How To Build Your Own MechaGodzilla Armor! 56 Days To Make Wearable Monster Suit Using EVA & Gears!

• DFRobot Microcontroller compatible with Arduino Selection Guide 
• Wiki
• Introduction to Bluno Family
• Schematic

Demo Tutorials

• Bluno Basic Demo
• Bluno Accessory Shield Demo
• Programming the Internet lesson 37: Exploring the DFRobot Bluno

User Review

• Embedded Computing Review by Rei Vilo

Custom Application from User

• Bluno iOS Terminal (developed by Air Vision)
• 3D Printable Bumper for Bluno (by omega368)

• Bluno x1