MultiStepper is part of AccelStepper. Just download http://www.airspayce.com/mikem/arduino/AccelStepper/AccelStepper-1.53.zip and you will have all the files.
MultiStepper is part of AccelStepper. Just download http://www.airspayce.com/mikem/arduino/AccelStepper/AccelStepper-1.53.zip and you will have all the files.