Help me with my robotic arm

    So, I am building a robotic arm about the size of a human arm, does anyone have any cheap-ish suggestions on how to make this thing as powerful as possible? What motors should I use for the different joints? Please help. :smiling_face:

  • Fubini April 2, 2024 at 4:27 AM

    Approved the thread.

    "As powerful as possible" is... very vague. With unlimited budget, it would be possible to make it powerful enough to rip your head off if you get in its way. Even with a limited budget, it could easily be strong enough to do harm.

    If you want an engineering answer, you need to be much more specific. What is your budget limit? How strong does this arm need to be (i.e., how many Newtons or Newton-meters)? How many axes will it have? Will the motors be mounted directly at each joint (weight problems) or transmit torque via belts (mechanically complicated).

    Motors are an open field. You could use simple RC servos, which come in a wide variety, but generally have no positional feedback. Or there's Dynamixel servos, which are more expensive, but have more power and better feedback. Or there's ClearPath, which makes very good and powerful stepper servos, but tend to be pretty big and heavy.

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