Bluno M3 - A STM32 ARM with Bluetooth 4.0 (Arduino Compatible)

Introduction
The Bluno M3 is a new Arduino compatible prototyping platform based on a 32-bit ARM processor. This Arduino compatible microcontroller integrates a Bluetooth 4.0 chip and a STM32 ARM controller on the board. As a member of Bluno family, Bluno M3 inherits most common Bluno features, such as bluetooth connectivity, Bluetooth wireless programming and mobile phone controlling. In addition, thanks to its new 32-bit microcontroller, Bluno M3 has a much more powerful performance, more storage space and more interface resources. You may also check Bluetooth microcontrollor selection guide to get more information.
The ARM processor is famous for its efficient processing performance, but one of the downsides to this is that its developing environment is also quite complicated. So DFRobot has been trying very hard to solve this: the underlying protocol and development environment have been rewritten to accommodate for Arduino language usage, giving it full Arduino compatibility. Bluno M3 has 512K flash memory and 64K SRAM, and the integrated Bluetooth 4.0 (BLE) supports Bluetooth wireless control or Bluetooth wireless programming.

Note: The special IDE for M3 only supports Windows currently.


Size Comparison. Left: Arduino Uno Right: Bluno M3

I/O Expansion Shield for Bluno M3
Project 1: Make Your Own Weather Station
This durable weather station kit includes an anemometer, wind vane, rain bucket and DH11 temperature and humidity sensor. It can transmit data via serial or RF interfaces.
Hardware List:
LCD12864 Shield for Arduino
Weather Station Kit with Solar Panel
Weather Station Kit with Anemometer/Wind Vane/Rain Bucket
Bluno M3 - A STM32 ARM with Bluetooth 4.0 (Arduino Compatible)
Features
Size Comparison. Left: Arduino Uno Right: Bluno M3

I/O Expansion Shield for Bluno M3 Specification
Microcontroller: STM32 F103RET6
Clock Speed: 72MHz
Bluetooth chip: TI CC2540 (Bluetooth 4.0)
Communication Range: 30m(1181")
Operating Voltage: 3.3V
DC Supply: USB Powered or External 7V~12V DC
Digital I/O Pins: 39
Analog Input Pins: 11 (Multiplex)
External Interrupt: 39 (D0~D38)
I2C/IWC: 30 (Default SDA), 29 (Default SCL)
SRAM: 64K
Flash: 512K (Customizable Flash assignment, refer to Flash chapter for more info)
Default User Code repository: 492K
Default User Data repository: 20K
SPI: SPI,SPI1
SPI 12(MISO), 11(MOSI), 13(SCK)
SPI1 33(MISO), 34(MOSI), 32(SCK)
Serial Port: 5 (Serial1/Serial2/Serial3/Serial4/Serial5)
Serial1 0(Rx1) & 1(Tx1)
Serial2 22(Rx2) & 21(Tx2)
Serial3 30(Rx3) & 29(Tx3)
Serial4 8(Rx4) & 9(Tx4)
Serial5 25(Rx5) & 23(Tx5)
Dimensions: 68mm x 31mm(2.68"x1.22")
Shipping List
Bluno M3 Microcontroller x1