{"title":"Robit - micro:bit board compatible with mbot","handle":"robit-micro-bit-board-compatible-with-mbot","url":"/products/robit-micro-bit-board-compatible-with-mbot","description":"\n  Robit is a motherboard of smart car based on micro:bit. It is compatible with MBOT. Except for the integration of the simple and convinient RJ25 connector，motor connector and sensor on MBOT, we have extended 4 DC motor connectors, 2 stepping motor connectors(same with 4 DC motor connectors), 8 PWM signal output connectors on this board. You can use it to drive PWM signal driving devices like servo. It has 8 G-5V-S digital signal connectors(for connecting with OCTOPUS electric bricks). Robit can realize all current basic functions of MBOT. Besides, you can extend its usage with more sensors, motors, servos, stepping motors and so on.\n\nFeatures\n\nCompatible with MBOT chassis and sensors.\nSupport 4 channels of DC motor and 2 channels of stepping motors.\nWith 8 PWM signal output connectors.\nWith 8 G-5V-S digital signal connectors(for OCTOPUS electric brick).\nWith 4 G-5V-S analog signal connectors(for OCTOPUS electric brick).\nIntegrate frequently used modules like buzzer, rainbow LED, light sensor, infrared send and receive.\n\n \nPins & Connectors\n\nIntroduction of Major Components\nRJ25 Connector\n\nRobit has 4 RJ25 connectors. Each RJ25 connector has 6 touch points. These points respond to power, 2 IO ports and IIC ports separately. It is compatible with some sensors on mBOT.\n RJ25 ConnectorMatch Pins on micro:bitJ1SCL(P19)/SDA(P20)/GND/5V/P13/P14J2SCL(P19)/SDA(P20)/GND/5V/P15/P16J3SCL(P19)/SDA(P20)/GND/5V/P1/P2 (support 5V analog input sensor)J4SCL(P19)/SDA(P20)/GND/5V/P3/P4 (support 5V analog input sensor) \nGVS Standard Electric Brick Connector\n\nExcept leading out to RJ25 connector, the IO port on micro:bit also lead out with the format of GVS. It is support 5V components. Besides, P1/P2/P3/P4 support 5V analog input sensors.\n \nGVS Standard Servo Connector: S0~S7\n\nYou can connect 8 servos at most. This connector leads out from the chip PCA9685 and extends from the IIC connector on micro:bit instead of normal I/O ports.\n \nDC Motor Connector: M1~M4\n\nIt allows you to connect 4 DC motors (max) at the same time. This connector leads out from the chip PCA9685 and extends from the IIC connector on micro:bit instead of normal I/O ports.\n \nStepping Motor Connector: STEP1 & STEP2\n\nIt enables you to connect 2 stepping motors(28BYJ-48-5V) at most.\n \nBuzzer\n\nThe buzzer is connected to the P0 port on micro:bit.\n \nLight Sensor\n\nThe light sensor onboard is connected to the P10 port on micro:bit.\n \nInfrared Emitting Diode\n\nThis infrared emitting diode is connected to the P6 port on micro:bit.\n \nInfrared Receiving Diode\n\nThis infrared receiving diode is connected to the P8 port on micro:bit.\n \nRainbow LED\n\nTwo rainbow LED beads are connected to the P12 port on micro:bit.\n \nDC Power Connector\n\nDC power connector supports 3.7V~4.2V DC power. It is usually connected to a battery holder with 4 AAA batteries.\n \nLi-battery Connector\n\nLi-battery connector supports 3.7V~4.2V li-battery.\n \nLi-battery Indicator\n\nThis indicator tells you battery power information. It is in blinking status. Blink once means 1 grid of power. And the full power has 4 grids. That means it will blink 4 times when the battery power is full.\n \nUSB Connector\n\nThis connector is only used to charge li-battery. It doesn't support data transmit and its charging current is 500mA.\n \nQuick Start\nHardware Connection\nFix robit onto mbot car.Connect left motor to M1 port, and right motor to M2 port.Once completed, it looks like the following picture showed.\n\nProgramming\nClick to open makecode, search the key word \"robit\" and add robit package.\n\n \nWrite your code to make the car forever move forth and back for 3 seconds respectively. Here's the code:\n \n\n \nYou can see the whole program from the link here: https://makecode.microbit.org/_aXVAyx3dm585\nAlso, you can download the code directly from the page below:\n \n\n \nResult\nWe can see our robit car moves forward for 3 seconds, and then backward 3 seconds. This round trip movement is repeated forever.\n\nParameterProjectParameterDC Power Input VoltageDC 3.7-6VLi-battery Input VoltageDC 3.7-4.2VUSB Recharging Current500mAExtendable Analog IO Ports4Extendable Digital IO Ports10Max Stepping Motor Driven Quantity8DC Motor4 ChannelsStepping Motor2 ChannelsProgrammable LED Beads2Passive BuzzerSupportPhotocell SensorSupportInfrared ReceiveSupportInfrared SendSupportDimension90mm X 74mmNet Weight46g\nDimension\n\nPacking List\n1 x Robit\n\n","vendor":"ElecFreaks","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":7733,"title":"Default Title","sku":"EF-EF03413","price":29.26,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}