This is the very first prototype of Eric's prosthetic hand, where it all initially started. Having basic knowledge of claws, he created a simple handheld contraption that consisted of 4 curved Lego technic pieces supported by flat base pieces, and a flexible band from a Bionicles set. The top claw is able to move up and down, with a piece of rubber band aligned the back to act as a "tendon" to pull the claw back. A piece of string is connected to the top so that when pulled, the claw clamps down. The first prosthetic only took a few hours to develop.

The driving mechanic of Eric's first Lego prosthetic. Eric had initial background knowledge of circuits and pulley systems from his past history of taking apart old toys and fixing them (RC cars, transformers, action figures, etc). Compiling his knowledge, he created a simple pulley system made of cardboard, toothpicks, rubber band, dc motor, 9v battery, and a button. The idea was that the motor would attach to the Lego hand and operate on a press of a button. But, Eric soon realized that the motor was too weak to pull the string to make the claw pull down. This conflict led Eric to study basic physics on torque and gears on YouTube to help resolve his issue. Putting everything he learned, the product was this gear system made from scrap.