Lula
robot made of paper and tape
Lula is an ambulating quadruped. Inspired by the gait of insects, Lula navigates using a set of IR sensors, adjusting her gait when encountering an obstacle. She was developed in 10 weeks, during the Informal Robotics course at Harvard Graduate School of Design. In keeping with the course ethos, we used paper and other commonly found materials to create our robot — enabling rapid prototyping at a low cost.
- robotics
- hardware
- mechanics
- Harvard GSD
![a paper robot photographed in perspective](https://geletina-images.s3.amazonaws.com/portfolio/lula-title-lg.jpg)
Mechanics
Inspired by origami, Lula’s movement in her hips and knees is created with parallel bar hinges and single folds. Her muscles are wires and elastic bands and her exoskeleton is made of laminated paper with pieces of acrylic. She walks with the help of a microcontroller and three servo motors.
![IR sensor](https://geletina-images.s3.amazonaws.com/portfolio/lula-mechanics-01-md.jpg)
![close up of a limb and rubber band muscles](https://geletina-images.s3.amazonaws.com/portfolio/lula-mechanics-02-md.jpg)
![top side view of lula](https://geletina-images.s3.amazonaws.com/portfolio/lula-mechanics-03-lg.jpg)
Lula in action
Yona
We tried to get as close to an insect as possible – shrinking our designs to a diminutive 5.25” we gave our girl a little sister Yona.
![Yona and Lula for scale](https://geletina-images.s3.amazonaws.com/portfolio/lula-yona-lg.jpg)
Process
Before Lula there were 22 prototypes that didn’t make the cut. Other casualties included: 3 burned Arduinos, 5 broken servo motors, and 1 fried battery charger. The record number of limbs made in a day is 8.
![custom electronics](https://geletina-images.s3.amazonaws.com/portfolio/lula-process-01-md.jpg)
![lula limbs](https://geletina-images.s3.amazonaws.com/portfolio/lula-process-02-md.jpg)
![the final prototype next to a mound of trash](https://geletina-images.s3.amazonaws.com/portfolio/lula-process-03-lg.jpg)