Mbed is a prototype development platform for ARM processor. It includes 3 parts: the free SDK, HDK and Web. Developers access to the web interface directly, and avoid the trouble of user developing environment installation. Mbed provides a complete MCU software development environment based on browser, includes editing code, program compilation, version control etc. User can develop as long as they have Internet, the compilation results can be downloaded and saved to the mbed development board, and then the user can work with.

nRF52832 development board is a Bluetooth low energy development board with temperature, humidity, environmental light and accelerator sensor.

NRF52832 is a new generation of high performance, low power Bluetooth system level chip for Nordic Semiconductor, ARM® Cortex™-M4F kernel, 512kB Flash + 64kB RAM, supports BLE, ANT, 2.4GHz protocol stack. Using open source tool chains, nRF52832 can conduct cross platform development; meet the needs of Mac OSX, Linux, Windows developers.

• DCON-16*2 pc，VCC，GND，P04～P31
• Bluetooth microstrip antenna
• Main chip :nRF52832
• Buzzer
• Download connector
• Indicator light set (4 lights)
• Button set(4 buttons)
• MiniUSB Power socket； V=5V+/-5%，Imax=200mA
• CR2032 Socket
• Self-locker switch, which supply power when pressed, cut power when bounced
• Power source indicator light, which lightens when powered
• Sensor plugin connector（I2C）

attention：One or more sensor plug-ins can be connected to the motherboard simultaneously.

• 2.4 GHz transceiver
  • -96 dBm sensitivity in Bluetooth® low energy mode
  • 1 Mbps, 2 Mbps supported data rates
  • TX power -20 to +4 dBm in 4 dB steps
  • Single-pin antenna interface
  • 5.3 mA peak current in TX (0 dBm)
  • 5.4 mA peak current in RX
  • RSSI (1 dB resolution)
• ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz
  • 215 EEMBC CoreMark® score running from flash memory
  • 58 μA/MHz running from flash memory
  • 51.6 μA/MHz running from RAM
  • Data watchpoint and trace (DWT), embedded trace macrocell (ETM), and instrumentation trace macrocell (ITM)
  • Serial wire debug (SWD)
  • Trace port
• Flexible power management
  • Supply voltage range 1.7 V–3.6 V
  • Fully automatic LDO and DC/DC regulator system
  • Fast wake-up using 64 MHz internal oscillator
  • 0.3 μA at 3 V in OFF mode
  • 0.7 μA at 3 V in OFF mode with full 64 kB RAM retention
  • 1.9 μA at 3 V in ON mode, no RAM retention, wake on RTC
• Memory
• 512 kB flash/64 kB RAM
• 256 kB flash/32 kB RAM
• Nordic SoftDevice ready
• Support for concurrent multi-protocol
• Type 2 near field communication (NFC-A) tag with wakeup-on-field and touch-to-pair capabilities
• 12-bit, 200 ksps ADC - 8 configurable channels with programmable gain
• 64 level comparator
• 15 level low power comparator with wakeup from System OFF mode
• Temperature sensor
• 32 general purpose I/O pins
• 3x 4-channel pulse width modulator (PWM) units with EasyDMA
• Digital microphone interface (PDM)
• 5x 32-bit timers with counter mode
• Up to 3x SPI master/slave with EasyDMA
• Up to 2x I2C compatible 2-Wire master/slave
• I2S with EasyDMA
• UART (CTS/RTS) with EasyDMA
• Programmable peripheral interconnect (PPI)
• Quadrature decoder (QDEC)
• AES HW encryption with EasyDMA
• Autonomous peripheral operation without CPU intervention using PPI and sEasyDMA
• 3x real-time counter (RTC)
• External system
• Single crystal operation
• On-chip balun (single-ended RF)
• Few external components
• Package variants
  • QFN48 package, 6 × 6 mm
  • WLCSP package, 3.0 × 3.2 mm
• Internet of Things (IoT)
  • Home automation
  • Sensor networks
  • Building automation
  • Industrial
  • Retail
• Personal area networks
  • Health/fitness sensor and monitor devices
  • Medical devices
  • Key fobs and wrist watches
• Interactive entertainment devices
  • Remote controls
  • Gaming controllers
• Beacons
• A4WP wireless chargers and devices
• Remote control toys
• Computer peripherals and I/O devices
• Mouse
• Keyboard
• Multi-touch trackpad
• Gaming