DFRobot (MBT0005) Micro IO-BOX Expansion Board, For BBC micro:bit Boards

Product Information:Silicon Manufacturer: -Core Architecture: -Core Sub-Architecture: -Silicon Core Number: -Silicon Family Name: -For Use With: BBC Micro:bit BoardsKit Contents: Micro IO-BOX Expansion BoardProduct Range: -Product Overview:micro: IO-BOX is a micro:bit multifunctional expansion board with on-boardLi-ion battery power, delicate appearance and easy to use. Features numerousfunctions on the 6cm x 6cm board such as 2-way driver motor, 9-way IO port,2-way I2C port, 1-way serial port, 1-way buzzer, 4-way RGB LED, Li-ion batterybox, charge circuit and emergency power interface. Also features short circuitand reverse connection protection for it to further improve the safety in usingLi-ion battery. In order to provide a stable power supply, the board employ highcost boost-buck power management solution. As a motor's instantaneous currentcan reach up to 1A at its starting instant which is a big challenge for powersupply. So the board carried out a strict test on our product and two TT motorskeep rotating forward and reversely continuously and even in such a condition,board and motor can still work about 1.5 hours until running out of the battery.CR123A Li-ion battery with 1000mA current rating3.7V to 5V external power supplymicroUSB 5V Support computer USB charging and cell phone charger3V to 6V supported motor voltage4.5 to 5.5V supply voltage rangeOne power switch, 350mA charging current, 2.5h charging timeDigital output voltage of 0V/3.3V, analogue input voltage of 0 to 3.3VDCOn-board buzzer (1-way(PO)), one buzzer switch, on-board RGB: 4 WS2812B (P15)2-way (I2C) motor interface, 9-way Micro: bit interface, 2 way I2C InterfaceDimension is 61mm x 61mm / 2.40 x 2.40"