The
Butter Robot
"What is my purpose?" A real-life replica of the Butter Robot from Rick and Morty. The wiring is a mess, but the existential dread is fully functional.
I originally thought about 3D printing the entire chassis, but ended up just printing the claw. The rest of the body is literally old Lego bricks, electrical tape, and a few micro servos I had lying around on my desk.
An ESP32 handles all the logic, driving three servos to articulate the head and arms. The hardware is completely jury-rigged, so most of the time went into the code — tuning the servo sweep timing to mimic that slow, depressed droop he does in the show when he realizes his only purpose in life is passing butter.
The parts list
- ESP32 microcontroller ×1
- Custom 3D-printed claw ×1
- MG90 servos ×2
- SG90 servo ×1
- Legos a handful
- Electrical tape way too much