Our project worked within a budget of $350 ($335.85 to be exact)! Look at our price breakdown - images link to store pages. Several components are ones which we already had, including the Nema 17 stepper motors, 24V power supply, Arduino Uno, and skateboard wheels.
A 6 pack of 1/4" thick 11x14" medium density fiber board from Amazon.
Belts and gearings to drive the pig's front legs with wheels.
A mild steel axle ordered from McMaster
Caster wheels for the hind legs of the pig. Ordered from Amazon.
Two skateboard wheels (purchased in a pack of 8) from Amazon.
A Raspberry Pi 4 used for computation of our carrot-detecting algorithm.
A Raspberry Pi-compatible camera, purchased from Amazon.
Stepper motors used to drive the pig.
Stepper motor drivers from Amazon.
A 3D printer stepper motor drive shield from Amazon.
A 256 Gb micro SD card used for interfacing to the Raspberry Pi.
A charging cable for the Rasberry Pi 4.
An extension cord from Home Depot used as a power supply for the pig.
A triplet wall adapter from Home Depot to transfer power to the pig.
A buck converter to convert from 24V to 12V.
A 24 V 14.6 Amp power supply from Amazon.
Krylon brand spray paint primer from Lowes.
Krylon brand spray paint from Lowes.
Krylon brand spray paint from Lowes.
Krylon brand spray paint from Lowes.
Tape used for masking off the pig's body.