Maestro Servo Controller icon Maestro Servo Controller — USB control for Pololu Maestro (6/12/18/24) via ARC Vx ports. Maps Vx to Maestro channels; supports position, speed, acceleration, release. Try it →

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Synthiam
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#1  

The error is correct - the variable is not defined. Please read the entire error, not just the first three words.

Define a variable such as...


$Variable = "Some data"

Perhaps begin with RoboScratch, then try blockly, and eventually move to EZ-Script to learn what a variable is.