# Kit Introduction ## Introduction --- Robit smart car is a kind of smart car which is based on micro:bit and ElecFreaks robit. Besides the RJ25 wiring port and motor port in Mbot, the robit is also equipped with 2-way DC motor connectors , 2-way stepping motor connectors(Stepping motor connectors and 4-way DC motor connectors are multiplexed ) and 8-way PWM signal output connectors. It can drive PWM signal driving devices like servo. It has 8-way G-5V-S digital signal connectors(for connecting with OCTOPUS electric bricks) and 4-way G-5V-S analog signal connectors(for connecting with OCTOPUS electric bricks). Robit can realize all current basic functions of MBOT and it can be regarded as the new generation of Mbot. ### Characteristics - Support 4 channels of DC motor and 2 channels of stepping motors. - With 8-way PWM signal output connectors. - With 8-way G-5V-S digital signal connectors(for OCTOPUS electric brick). - With 4-way G-5V-S analog signal connectors(for OCTOPUS electric brick). - DC power supply input voltage: DC 3.7V-6V. - Lithium battery power supply input voltage: DC 3.7-4.2V. ### Technical Parameter - Name:Robit Smart Car - SKU:EF08195 - Version:V1.0 - Motor Type:TT Motor - Wheels Number:2 - Line-following:Support - Sonar:Support - Power Source:Lithium battery - Net Weight:426g - Dimension of Finished Products:170mm X 128mm X 98mm ## Lists of Components --- - Chassis x 1 - Robit x 1 - Sonar bit x 1 - Dual Line-following Modules x 1 - TT Motor x 2 - Batter x 1 - Screws Package x 1 ## Diagram for Installment of Chassis --- Step 1: Install TT motor with four M3*25 countersunk screws ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_02.JPG) Step 2: Attach the hook side of HOOK & LOOP to the aluminum chassis. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_03.JPG) Step 3: Fasten the four 4*6 single-pass coppers with four nuts to the Robit board. ![](https://raw.githubusercontent.com/elecfreaks/learn-en/master/microbitKit/robit_smart_car/images/robit_smart_car_04.jpg) Step 4: Fasten the four M3*30 single-pass coppers on the aluminum chassis. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_05.JPG) Step 5: Fasten the Robit board with four M3*5 screws to the aluminum chassis. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_06.JPG) Step 6: Install the Fender with M4*5 screws. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_07.JPG) Step 7: Install the universal wheel and line-following module with 2 M4*10 countersunk screws. ![](https://raw.githubusercontent.com/elecfreaks/learn-en/master/microbitKit/robit_smart_car/images/robit_smart_car_08.JPG) Step 8: Install the wheels. ![](https://raw.githubusercontent.com/elecfreaks/learn-en/master/microbitKit/robit_smart_car/images/robit_smart_car_09.JPG) Step 9: Install 2 M4*6+6 single-pass copper cylinders on the head of the car. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_10.jpg) Step 10: Install sonar module with 2 M4*5 screws. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_11.JPG) Step 11: Stick the loop side of the Hook&Loop onto the battery. ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_12.JPG) ### Finished Products ![](https://raw.githubusercontent.com/elecfreaks/learn-cn/master/microbitKit/robit_smart_car/images/robit_smart_car_01.JPG) ## Sample Code --- Click "**Add Package**" and search with "**robit**", then add the robit package. ![](./images/u1nc7NF.png) ### The code of moving forward is list below, you can have your car moving forward after downloading. [https://makecode.microbit.org/_7RrcC6R3T5MP](http://https://makecode.microbit.org/_7RrcC6R3T5MP) ## File --- ## FAQ ---