So you want to build a robot that can get things around the house? John Choi has shared a fascinating project that helps you get started. The Multipurpose Mobile Manipulator Mk 1 can draw pictures, play the piano, deliver bagels, water plants, and do a whole lot more.
The robot was built using a laptop computer, Arduino MEGA, motor drivers, range finders, wheels, battery charger, and a few other parts to get started.
You can find instructions, parts, and equipment for this project on Instructables.