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Supplies

The machines and projects must include the following features:

• use an Arduino microcontroller board (UNO, Leonardo, 101);

• request at least the use of an input sensor;

• generate at least one output interfacing with the real world, which can be visual (LED, screens) or physical (moving motors);

• use at least one device not explained in class, it can be a sensor or a motor and its pilot card.

The project we decided to build is a toy bipedal robot (taking the "Otto DIY" open source project as an example) able to walk and turn around using an Arduino board which is controlled by IR signals sent by another Arduino board (which will work as a remote control).

Step 1:

Introduction

In this report we will explain the operation of a bipedal robot driven by

microcontrollers and controlled by a remote, able to walk and turn around.

Goal

The machines and projects must include the following features:

• use an Arduino microcontroller board (UNO, Leonardo, 101);

• request at least the use of an input sensor;

• generate at least one output interfacing with the real world, which can be visual (LED, screens) or physical (moving motors);

• use at least one device not explained in class, it can be a sensor or a motor and its pilot card.

The project we decided to build is a toy bipedal robot (taking the "Otto DIY" open source project as an example) able to walk and turn around using an Arduino board which is controlled by IR signals sent by another Arduino board (which will work as a remote control).

Used Material

The components necessary for the realization of the project are the following ones:

• 2x Microcontroller (Arduino UNO, Elegoo Nano);
• 4x Micro servo SG90;
• IR LED;
• IR receiver VS1838B;
• joystick module;
• 100Ω resistance;
• Arduino nano expansion board;
• Jumper cables;
• PLA pieces (obtained by 3D printing).

The printed pieces’ 3D drawing files were downloaded from the website “Thingiverse”, as “Otto DIY” is an open source project.

The servos and the IR receiver don’t require any resistance as it’s integrated in the components.

To make the robot’s wirings easier we mounted the Elegoo Nano on an expansion board.

Functioning

To make the bipedal robot we used 2 microcontrollers.

The first one is an Elegoo Nano board connected to the joystick module and to the IR LED to assume the function of a remote control: it calculates the position of the joystick to understand where the robot has to go (so, which code has to be sent).

The second microcontroller is the “mind” of the robot: it controls the movements of the 4 servos based on the infrared signals received by the sensor. The operation of both devices are described in the following flowcharts.

Step 2:

An open-source modular robot with an epic personality. It means the hardware is easily discerned so that others...