Editing Team9 microcontroller

= Bluno Beetle V1.1 DFR0339 =

'''ADVANTAGES'''
* Small size: 28.8mm X 33.1mm (one of the smallest Arduino boards in the market) 
* Connectivity: integrated Wi-Fi and Bluetooth 4.0
* Suitable for DIY projects and wearables 
* Program and control board wirelessly from mobile device (Android/iPhone)
* Compact and affordable
* Functionality 
* Ease-of-use 


'''DISADVANTAGES'''
* Small number of pins: only four analog and four digital Pins

= Features =
* ATmega328@16MHz
* Bluetooth Low Energy (BT 4.0)
* Micro USB port
* Super Compact Size
* Support Bluetooth HID and ibeacon
* Compatible with all DFRobot Bluno Series
* Support Wireless Programming

= Specification = 

* Bluetooth Chip: CC2540
* Sensitivity: -93dBm
* Working Temperature：-10 ℃ ~ +85 ℃ 
* Maximum Distance：50m(1968.50")(Open field)
* Microcontroller: ATmega328
* Clock frequency: 16 MHz
* Operating voltage: 5V DC
* Input voltage: <8V (Vin < 8V)
* Digital Pin x4
* Analog Pin x4
* PWM Output x2
* UART interface x1
* I2C interface x1
* Micro USB interface x1
* Power port x2
* Size：28.8mm X 33.1mm(1.13" x 1.30")
* Weight：10g