Introduction: E101 Line Following Bot With Speaker

Here is a line following robot that plays music when it passes over specific colors

Step 1:

David Lashbrooke, Hunter Jackson, and Rithik Angala

Attachments

Step 2: Goal

This bot will follow a track or tracks of multiple different colored lines that you can create while playing music of your choice.

Step 3: How It Works

Create a continuous track of electrical tape around any room that you would like the bot to follow. Set the bot at any point on the track and watch it go.

Step 4: Materials

1. Gathered all materials needed to meet our goal which consisted of

· Raspberry Pi 3 B+

· Wheels (3)

· Motors (2)

· IR Sensors (2)

· Chassis

· Wires (∞)

· Screws (6)

· Nuts (6)

· AA Batteries (4)

· Battery holder

· Color sensor

· Speaker

· Circuit board

· Audio jack

· Nuts

· Screws

· Resistors (10k, 22k, 30k)

· Capacitors (50 and 30)

· LEDs (green, red, and yellow)

· USB to audio cable

· 4 cord cable

· 3 cord cable

· A few other small electronic components and acrylic for speaker case

2. In order to set up the Raspberry Pi 3 B+, we needed

· HDMI Cable

· USB to MicroUSB Cable

· Keyboard

· Mouse

· Monitor

· Internet Access

Step 5: Tools

  • Soldering gun/station
  • 3D printer
  • Wire strippers/cutters
  • Screw driver phillips/flathead

Step 6: Code

Here is the link to the GitHub with our code. For some reason instructables did not like the format when copy and pasting so we created a GitHub file instead. Github will also allow for easier cloning to a device than copy and pasting.

https://github.iu.edu/huntjack/ise-e101/blob/master/Final%20Project

Step 7: Step 1

SETTING UP THE RASPBERRY PI

  • After obtaining your Raspberry Pi, plug it into a monitor via HDMI
  • Follow the instructions on the screen

SETTING UP THE SD CARD

  • After obtaining your Micro USB card, plug it into any computer and have it flashed and formatted

Step 8: Step 2

WRITE THE CODE

  • Write code for the bot to follow a black line (code shown above)
  • After writing the code, download that code onto the SD card via your computer
  • Then, insert the SD card into your Raspberry Pi

Step 9: Step 3

ASSEMBLE THE BOT

  • Put together each motor with each forward/backward wheel and screw them together
  • Screw the small clear wheel into the front of the chassis
  • Then, screw in the other two wheels with the motor into the chassis
  • Connect appropriate wires to the battery pack in order for it to receive power
  • Place battery pack and Raspberry Pi on top of the bot

Step 10: Step 4

BUILD THE SPEAKER

Click here to see the video we used to build the speaker

After building the speaker, place that on top of the chassis on the bot

Step 11: Step 5

MUSIC

  • Decide what music you want to be played through your speaker
  • Download that music onto your SD card as an .mp3
  • Insert your SD card into your Raspberry Pi
  • Download that music onto your Raspberry Pi
  • Decide what color you want to be associated with each song and edit the code as needed