Robotbit is a robotic expansion board specially designed for micro:bit by the KittenBot team. It has a powerful ability to drive DC motors, stepper motors, and servos. It also comes with an onboard buzzer, four RGB pixels and releases all valid IO from micro:bit, with support for the most common electronics module in the market. It comes with an 18650 battery holder, integrated lithium battery boost, charging and protection chip. Support for external power input. Mechanical support for a robotic chassis and LEGO technical slots. For more details and tutorials please click here micro:bit, Kitty Case and battery are not included. SUPPORTED SOFTWARE Kittenblock (based on Scratch3.0) Makecode and python(Mu editor in microbit mode) HARDWARE INTERFACE 5V external power input（with anti-reverse protection） Power switch Power Indicator Battery Indicator Micro USB charging port 4-channel DC motor / 2-channel stepper motor Jumper for buzzer selection 8 channel IO（corresponding to Micro:bit P0-P2、P8、P12-P15） 5V and GND port Buzzer 8 channel servo port I2C interface (expandable I2C module) 18650 battery case Battery protection recovery push button Micro:bit edge connector 4x RGB pixel Servo driver (PCA9685) 2xDc/Stepper driver (DRV8833) KittenBot robot chassis mounting hole Standard LEGO hole Specifications Dimensions: 78mm x 57mm x 23mm PCB Thickness: 1.5mm Small mechanical hole: 3.0mm Big mechanical hole: 4.8mm Net weight (without packaging): 37.5g 18650 battery voltage: 3.7V USB input voltage: 5V VM pin max output: 1A (with onboard battery) External Voltage Input (the green terminal): 5V (only supports 5V input, do not connect over 5V, maximum current supports 3A)
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