Double and Unbalanced Electronic Pendulum : 4 Steps - Instructables

Double Spin Solar Pendulum : 4 Steps (with Pictures) - Instructables

Another Easier Inverted Pendulum Robot : 11 Steps (with Pictures) - Instructables

Self-Balancing Upside Down Pendulum : 9 Steps - Instructables

Electromagnetic Photo Wobbler : 9 Steps - Instructables

Electric Double Pendulum : 5 Steps - Instructables

Electromagnetic Photo Wobbler : 9 Steps - Instructables

Coupled Resonant Pendulums - Annenberg Learner

Another Easier Inverted Pendulum Robot : 11 Steps (with Pictures) - Instructables

Automatic Baby Bouncer Robotics / Electronics / Physical Computing

JimRD's Projects - Instructables

Electronic Pendulum Made Into Brushless Motor - Instructables

Self-Balancing Upside Down Pendulum : 9 Steps - Instructables