checkout the working video here: \r
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This video shows step by step instruction to make android app using mit app inventor for controlling multiple servo motors. Its easier to control a single servo motor from android app, if you want to control multiple motor there come the problem, this video will explain how easily one can make an app and control several servo motors, I used arduino with multiple servo motor control app, you can use any microcontroller you want.\r
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For arduino program and other information check the link below:\r