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 Boards Kit Contents: Micro IO-BOX Expansion Board Product Range: - Product Overview: micro: IO-BOX is a micro:bit multifunctional expansion board with on-board Li-ion battery power, delicate appearance and easy to use. Features numerous functions 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 battery box, charge circuit and emergency power interface. Also features short circuit and reverse connection protection for it to further improve the safety in using Li-ion battery. In order to provide a stable power supply, the board employ high cost boost-buck power management solution. As a motor’s instantaneous current can reach up to 1A at its starting instant which is a big challenge for power supply. So the board carried out a strict test on our product and two TT motors keep 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 rating 3.7V to 5V external power supply microUSB 5V Support computer USB charging and cell phone charger 3V to 6V supported motor voltage 4.5 to 5.5V supply voltage range One power switch, 350mA charging current, 2.5h charging time Digital output voltage of 0V/3.3V, analogue input voltage of 0 to 3.3VDC On-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 Interface Dimension is 61mm x 61mm / 2.40 x 2.40”