Humanoid & Frogbotic

Although they are fun to construct the Humanoid and Frogbotic projects do not work, at least in their original configurations (Williams 2003 & 2004). The first does not walk and the second does not jump. Bipedalism is a challenging form of locomotion to program. It has taxed the resources of well funded and staffed research centres. Williams attempts to make the humanoid walk with PIC Basic. In the future we plan to implement an Arduino solution. Programming, using a more powerful microcontroller, coupled with minor design changes should allow the humanoid to march forward.

The frogbotic failed to leap properly for two reasons. First, it is too heavy. Second, the spring coil is unable to store sufficient kinetic energy. There are two solutions. First, replace the aluminum bar with aluminum sheet metal to reduce weight. Second, redesign the spring mechanism so that it will accumulate more energy. Together these changes should bring the frogbotic to life. (Our appreciation to Sukhwinder Hayer (Grad 2011) who constructed both projects knowing the challenges that lay ahead.)


Karl Williams, Build Your Own Humanoid Robots, 2004. 9. Bipedal Walking Robot, p. 161–201

Karl Williams, Amphibionics: Build Your Own Biologically Inspired Robot, 2003. 4. Frogbotic, p. 51–103