3D-Printed-Sumo-Bot

An initial development of a cheap 3D printed sumo robot to serve as a base design for a maker training course.

Topics to be Taught Through Project

• Robotics and Interdiscplinary Engineering Design
• SolidWorks 3D Design
• 3D Printing
• Arduino Robotics Integration
• Electrical Prototyping and Soldering
• C Programming
• Sensor Management

General Requirements of Project

• Total cost per bot: <= $50
• Shall be capable of being built in one semester with <= 4 hours spent per week
• Shall be capable of staying within a white ring on a black surface unopposed
• Shall be capable of searching for opponent bot

Technical Requirements of Project

• 3D printed robot base with light color for high light reflectivity for IR
• Front wedge/plate
• 4 x AA Batteries w/ battery holder
• 2 x 3D printed robot wheels/sled
• 2 x servo mounted wheels
• 2 continuous rotating servo motors
• 1 cheap Arduino based microcontroller (Trinket, Teensy, Nano, Metro, Mini, clone etc.)
• 1 forward facing distance sensor (ultrasonic or IR)
• 2 downward facing line detection sensors
• 1 pushbutton for start button (provided by SPARC inventory)

Potential Parts

The following are a list of parts that could be used to construct the sumo bot. The prices are approximated per robot.

• $4 Arduino Nano Clone: Longruner Mini Nano V3.0 ATmega328P 5V
• $15 Continous Rotating Servo w/ wheels: 2 Pack FS90R 20.86oz Continuous Rotation Micro Servo Arduino with wheels
• ~$2 Light Blue PLA or ABS
• $3 Ultrasonic Sensor: Elegoo HC-SR04 Ultrasonic Module Distance Sensor
• $6 2 x line Sensors: SPARKFUN REDBOT SENSOR - LINE FO
• $3 4 AA Battery holder: LAMPVPATH 3 Pcs 4 x 1.5V (6V) AA Battery Holder
• $3 Wires: Elegoo 120pcs Multicolored Dupont Wire
• $4 Perma-Protoboard: Adafruit Perma-Proto Half-sized Breadboard PCB

~ Total: $46

Pin Assignments

• Ultrasonic
  • Echo: D2
  • Trigger: D3
• Servos
  • Left: D10
  • Right: D9
• Line Following Sensor
  • Left: A7
  • Right: A6