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I want to build a simple arm that can generate a pressure on a small object (a force of 50-100 gram is enough) and let go of it very quickly. Which motor can be used for this?

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  • $\begingroup$ Rather than focusing on the motor needed, the better question would be what type of motor control is needed to achieve your task. $\endgroup$ – alecive Jul 18 '19 at 22:28
  • $\begingroup$ More importantly how does one intend to implement the holding of said spring then it's release? $\endgroup$ – morbo Jul 18 '19 at 22:53
  • $\begingroup$ I can relax "pushing a spring" to "pushing an object". $\endgroup$ – OMGsh Jul 19 '19 at 10:09

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