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## Vehicle Speed, RPM, and Wheel Diameter Finder

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Use this tools to compute, the resulting robot speed, the required motor RPM, and the corresponding wheel diameter. Solve for Vehicle Speed: Equation: Speed = (RPM (diameter * PI) / 60) Solve for Motor Speed: Equation: RPM = ((60 * speed) / (diameter * PI)) Solve for Wheel Diameter: Equation: Diameter = ((60 * speed) […]

## Unit Conversion Tool

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Instructions: Select the appropriate unit and enter a value to be converted. * Note: Weight (force) and mass are different entities. To convert mass to weight, multiply by gravity (9.81 m/s^2 or 32f t/s^2). ** Note: Although kg-cm is used throughout the RobotShop site, it is actually kgf-cm. Similarly, oz-in should actually read ozf-in throughout […]

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## Robot Arm Torque Calculator

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The Robot Torque Arm Calculator is intended to help you choose the right motor for each joint of your robotic arm. The torque (T) required at each joint is calculated as a worst case scenario (lifting weight at 90 degrees). Ensure your units are consistent. Most common units are kg-cm and oz-in. Take a look […]

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## Drive Motor Sizing Tool

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The Drive Motor Sizing Tool is intended to give an idea of the type of drive motor required for your specific robot by taking known values and calculating values required when searching for a motor. DC motors are generally used for continuous rotation drive systems, though can be used for partial (angle to angle) rotation […]

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## Basics: What Tools do I Need?

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Contrary to popular belief, expensive tools are not necessary when building custom robots. Tools such as oscilloscopes, CNC machines, laser cutting machines etc. are usually reserved for the hobbyist who makes many new robots each year, schools, companies or other institution. These types of tools also make it fast and easy to produce “professional” grade prototypes. With […]