Bluno M3 Microcontroller Board ARM STM32 F103RET6 72MHz Bluetooth 4.0 for Arduino Android iOS DFRobot

Bluno M3 Microcontroller Board ARM STM32 F103RET6 72MHz Bluetooth 4.0 for Arduino Android iOS DFRobot
    
Description:
- The Bluno M3 is a new prototyping platform compatible with Arduino based on a 32-bit ARM processor. This microcontroller integrates a Bluetooth 4.0 chip and a STM32 ARM controller on the board. As a new member of Bluno family, Bluno M3 comes with some common Bluno features, such as bluetooth connectivity, Bluetooth wireless programming and mobile phone control support. In addition, thanks to its new 32-bit microcontroller, it has more powerful performance, more storage space and more interface resources.    
- 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. Bluno M3, a new product designed by DFRobot, changes this. The rewritten underlying protocol and development environment have been rewritten to accommodate for Arduino language usage, giving it full for 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.    
 
Features
- Supports Bluetooth Wireless Programming    
- Supports Bluetooth HID    
- Supports AT commands to configure BLE    
- Supports firmware upgrades    
- Supports mobile control    
- Supports firmware updates    
- Compatible with Arduino Uno pin mappings    
- Supports Android and IOS applications, open source code, suitable for secondary development by the user    

Specification
- Microcontroller: STM32 F103RET6    
- Clock Speed: 72MHz    
- Bluetooth chip: TI CC2540 (Bluetooth 4.0)    
- Communication Range: 30m    
- 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 54(Rx5) & 53(Tx5)    
- Dimensions: 68mm x 31m    

Package List:
- 1 x DFRobot Bluno M3 Microcontroller Board