namiwijeuom/analog-wall-following-robot

This is a group project done under the module EN2091 - Laboratory Practice and Projects , Semester 3, Department of Electronic and Telecommunication Engineering, university of Moratuwa. Team members were Namina Wijetunga(myself), Shanaka Liyanarachchi, Ishara Dilshan, and Upeksha Dilhara.

Analog-Wall-Following-Robot

This is a group project done under the module Laboratory Practice and Projects , Semester 3 of the Department of Electronic and Telecommunication Engineering, University of Moratuwa, Sri Lanka.

The task description of the project is as follows.

1 Introduction

In recent years, robotics has become a major force among automation tasks. Concepts of robotics are applied from small automation tasks to self driving cars. In this challenge, you are tasked with building a simple wall following robot using analog electronic components. For this, you have to measure the distance from the robot to the side walls using analog sensors. Then using a PID control circuit, you should generate a signal so that the robot tracks and travels on the centerline between the walls.

2 Specifications

Build a simple wall following robot with a PID controller which keeps the robot at the center as it travels.

• Use of analog distance measurement sensors
• Use analog electronics for the implementation (transistors, operational amplifiers)
• Robot should be able to track the center-line between walls with minimum latency
• Evaluated based on design, speed and performance of the robot
• A design with 2 motors will be sufficient
• You can use a robot kit with chassis (but you are encouraged to come up with a custom design)
• Wall height is 7 cm
• The width between walls is 30 cm
• Maximum robot size is 15 cm x 15 cm

3 Additional Notes

• Any change of project specification is negotiable only before the mid review
• All circuits must be simulated using software (e.g., Multisim, LTspice,PLECs)
• All circuits should be tested on the breadboard and reviewed by the assigned supervisor before moving further
• Circuits must be designed using professional EDA software (e.g., Altium Designer, OrCAD)
• Schematics should be verified and evaluated by the assigned supervisor
• Design for manufacturability should be considered when designing the PCB
• Complete set of design and manufacturing documents – Schematics, Layout, 3D file – Gerber files, Assembly files – BoM must be generated and properly documented.
• Students are encouraged to procure components from international component distributors (e.g., Mouser, DigiKey, Arrow Electronics, LCSC)
• Students are encouraged to get the PCBs manufactured from international PCB manufacturers (e.g., JLCPCB, PCBway)
• Main functionality of the project must be achieved with basic electronic components such as resistors, capacitors, inductors, diodes, transistors and other analog integrated circuits.
• Using any other pre-built programmable ICs are prohibited.
• Microcontrollers can be only used for user interface operation.
• Enclosure design must be done using a professional software (Solidworks)
• Enclosure and 3D model of the circuit must be assembled and inspected before manufacturing.
• 3D printing, Laser cutting and Sheet metal bending can be used to manufacture the enclosure.
• Students are encouraged to consider the 3D model and PCB co-design (design in parallel by taking their integration into consideration) when designing.
• Final implementation of the project need to done in a PCB.
• Follow provided “General guidelines”.