"The bird's screaming would cease after the squirt gun would fire," Mr Gray wrote on the Bird Buggy website. "However, the effectiveness of the water gun did not last. Pepper started utilising the water as a bird bath and continued to shriek."
After a sound deterrent also proved ineffectual, Mr Gray concluded allowing the parrot to move around the house would be a better idea.
"However, because of the messes the bird leaves behind and the possibility of the bird getting stepped on, roaming the house un-attended is not an option. If he could be placed on a mobile platform that could move about the house, hopefully he would stop screaming."
So he built Pepper a platform the bird can move using its beak, complete with infrared sensors and bump sensors to prevent Pepper crashing.
However as this clip shows, Pepper has difficulty turning right.
The machine was built for the Intelligent Machines Design Lab at the University of Florida.
- nzherald.co.nz