# Case 10: The Mechanical Crawler ## Purpose --- Make a mechanical crawler with [NezhaA Inventor's Kit](https://shop.elecfreaks.com/products/elecfreaks-arduino-36-in-1-nezha-a-inventors-kit?_pos=2&_sid=e1dfa3343&_ss=r). ![](./images/neza-a-case-10-01.png) ## Purchse --- [NezhaA Inventor's Kit](https://shop.elecfreaks.com/products/elecfreaks-arduino-36-in-1-nezha-a-inventors-kit?_pos=2&_sid=e1dfa3343&_ss=r) ## Materials Required --- ![](./images/neza-a-case-10-02.png) ## Assembly Steps --- ![](./images/neza-a-step-10-01.png) ![](./images/neza-a-step-10-02.png) ![](./images/neza-a-step-10-03.png) ![](./images/neza-a-step-10-04.png) ![](./images/neza-a-step-10-05.png) ![](./images/neza-a-step-10-06.png) ![](./images/neza-a-step-10-07.png) ![](./images/neza-a-step-10-08.png) ![](./images/neza-a-step-10-09.png) ![](./images/neza-a-step-10-10.png) ![](./images/neza-a-step-10-11.png) ![](./images/neza-a-step-10-12.png) ![](./images/neza-a-step-10-13.png) ![](./images/neza-a-step-10-14.png) ![](./images/neza-a-step-10-15.png) ![](./images/neza-a-step-10-16.png) ![](./images/neza-a-step-10-17.png) ![](./images/neza-a-step-10-18.png) ![](./images/neza-a-step-10-19.png) ![](./images/neza-a-step-10-20.png) ![](./images/neza-a-step-10-21.png) ![](./images/neza-a-step-10-22.png) ![](./images/neza-a-step-10-23.png) ![](./images/neza-a-step-10-24.png) ![](./images/neza-a-step-10-25.png) ![](./images/neza-a-step-10-26.png) ![](./images/neza-a-step-10-27.png) ![](./images/neza-a-step-10-28.png) ## Hardware Connections --- Connect the [motor](https://www.elecfreaks.com/geekservo-motor-2kg-compatible-with-lego.html) to M1 port on [Nezha-A master box](https://www.elecfreaks.com/arduino-3-in-1-master-control-box.html). ![](./images/neza-a-case-09-03.png) ## Programming --- ### Prepare the programming Steps for preparation please refer to: [Arduino 3 in 1 Breakout Board](https://www.elecfreaks.com/learn-en/Arduino-3-in-1-box/Arduino-3-in-1-box.html). ### Sample Code: ``` // Language ArduinoC #include NezhaA nezhaA; //Create an instance of Nezha category void setup() { nezhaA.begin(); //Initiliaze the buzzer, motor, servo and light nezhaA.setMotorSpeed(M1, 100); //Set the speed of the motor connecting to M1 at 100% } void loop() { } ``` ### Result After powering on, it crawls forward.