Dancing Biped RobotWritten on March 1st , 2020 by Arnold Ying
Source code: Unavailable
I made a dancing biped robot!
This was made at UBC with my project course group: Stella, Amir, Rain, Parsa, Sanjeev and Manek!
In one of my second year computer engineering course at UBC, CPEN 291, I had to make a dancing biped robot as one of my assignment. This was a fun little funky project that helped us gain familiarity working with microcontrollers (ItsyBitsy) and interfacing differnt sensors, motors, and I/O components (servo motors, sonar, keypad, RGB lights..) with the microcontroller. It also help me gain a better understanding and familiarity with Python.
What it does
There are many functionalities of the robot, all of which are listed and explained below:
The robot can perform 6 different dance moves:
- Waddle: The robot flaps its feet up and down similar to how a penguin waddles
- Pop-Step: The robot rotates its feet inwards and outwards in a pop and step sort of fashion, hence the name.
- Ballerina: The robot rotates its legs and performs a tip toe sort of action. The robot then proceeds to rotate and kick at the end.
- High-Knees: The robot brings its legs up and down one by one, similar to a high knees exercise.
- Excite: This move performs several kicks back to back, switching between the right and left legs.
- Shuffle: The robot performs a simple shuffle by turning its legs left and right several times.
The robot can also play certain pre-programmed songs (even during dances) using the peizo-buzzer that we wired up:
- The Anthem
- Mario: Super Mario Bros Theme Song
- Stranger Things: Stranger Things Theme Song
- All Star: All-Star by Smash Mouth Chorus
- Tetris: Classic Tetris Game Theme Song
- Fortnite: Fortnite Default Dance Song
The robot has a small 1-inch LCD display that displays a menu that makes accessing the dances and music a lot easier
The robot has a 6 key keypad that takes in user input, it requires a password to start! (hint: 1234)
The robot has an ultrasonic sensor that detects walls and motion and stop any dance move if it detects an object too close
- Lights The robot has an onboard RGB light that flashes to indicate the status of the robot and any I/O feedback. Whenever the user pressess a key on the keypad the RGB light flashes white. Whenever the robot is stopped due to it detecting an object too close, the RBG light will flash red 3 times.
How we built it
The professors provided a 3D printed robot chassis for us to house all the components in. We used 2 breadboards to house the
wires for all the components of the robot. A detailed circuit schematic is below created using the Fritzing software.
Challenges we ran into
There were lots of wiring issues for interfacing with the ItsyBity, the microcontroller that we use. Since we want to include as many feature as we can there weren’t enough ports on the ItsyBitsy for us to use. We had to implement and wire a 2:3 decoder to reduce the number of ports used by the keypad from 7 to 4. There are many of these types of issues, we also had to fit all the wiring into a pretty compact casing, so that required lots of planning and rewiring of the robot.
What we learned
I personally gained a better understanding and familiarity with Python and particularily the CircuitPython and Adafruit libraries in Python that helps us to better interface the I/O devices.