DFRobot BLE4.1 Module - Bluetooth 4.1 module

Description

DFRobot BLE4.1 Module is a Bluetooth 4.1 module with a DA14681 processor with a 3.3 V power supply. It is characterized by low energy consumption. The module integrates an advanced energy management system, supplied with the Li-on battery charging circuit with a maximum current of 400mA. It can be powered directly from the USB port. The module offers numerous I / O ports and communication interfaces: SPI, I2C, UART as well as PWM signal generation. The processor can communicate directly via the USB port (USB1.1 standard). In addition, the module offers the possibility of handling up to 4 connections at the same time, thanks to which it can be combined with other modules in a star or tree network. It is easy to use thanks to the Arduino library support. The module will be a comprehensive solution for IoT devices, devices requiring low power consumption or a network of distributed sensors. It can be used, for example, in the cooperation of several mobile robots.

properties

• Processor: DA14681 (ARM Cortex-M0 processor)
• Operating voltage: 3.3 V
• USB input: 4.2 ... 5.0 V
• Lithium battery power: 3.7V
• USB charging support (the chip has a charging function)
• Charging current: 10 ... 400 mA
• Supported battery capacity: 20 ... 500 mAh
• Low energy consumption: 30 AU
• The maximum output current of the I / O pin: 4.5 mA
• Maximum I / O port output current: 100mA
• Supports three modes of network connection (P2P connection, star network, tree network)
• Maximum number of sub-connections: 4 (simultaneous connection)
• The maximum transfer rate is 4 Kb / s
• Flash memory: 8Mbit
• 64 KB OTP
• 128 KB of SRAM data
• 128KB ROM
• Built-in quartz: 16 MHz, 32.768 KHz
• Three modes of energy management
• 29 digital I / O ports
• 8 analog inputs
• 1 SPI
• 2 I2C (supports two communication speeds in the 100KHz and 400KHz band)
• 2 UART
• 6 PWM
• I2S / PCM master-slave interface
• IR interface (PWM)
• USB1.1 support (computer side simulation in a serial port)
• Built-in temperature sensor
• Power consumption for data transmission: 3.4mA (TX) 3.1mA (RX)
• Working temperature: -40 ... 85 ℃
• Dimension: 25 x 18 x 3 mm