Hello Members of LMR. I'm back with a new project, it's not a robot but is a really neat learning tool that every Electronic Engineer or student will love to have. This is a Mechanical resistor color code calculator. It has (4) small stepper motors with driver boards from yourduino.com , (2) Arduino UNO on a bread board and (4) 10K potentiometers. As you turn the potentiometers, the stepper motors rotate displaying a color and a value at the same time, thus showing the unknown resistor value and color code.
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/arduino-mechanical-resistor-color-code-calculator