Our robot "Bob" is becoming demanding. Now he wants to not just move his arms up and down but be able to grab things. We've been experimenting and searching the internet for ideas but keep getting the large clunky, sit on desk, rotational arm clones. It appears in this area innovation has almost dried up. If anyone has anything that can be not just be an arm on a desk but part of a robot - please let us know. Simple is best. I'm trying things with just 2 servos and parts of plastic bottles and household junk but nothing worth showing just yet.
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arms mg995 servos work with 15kg of force, the arm measures 30cm long, and can lift objects at most 150 grams in weight (weight of an apple), to give you an idea of ??the strength and measures that a servo can handle 15kg. The servo is cheap and is in abay
I have heard that in Australia use the metric system, if not so correct me please. I also think using bottles trimmed to arms but to do a cover of what is real or arm skeleton, well painted and tastefully chosen can give a pleasing result. regards
(given up trying to make them from scratch)
I will add bits of your designs as I go along. I'm trying to be as simplistic as I can.
Ok, Rgordon and R2D2 - weight seems to be a common problem - for this I've used an upside down J design where counterweight can be used opposite ends to balance the weight of the claw (metal) .
I've begun with a servo for shoulder (no elbow) with the arm extending to the claw - again, no elbow.
It begins to work fine but after scripting a few grabs, the robot gets the jitters, almost like having a seizier - then he starts moving and twitching like he has a life of his own - any ideas guys...?
and bret.tallent good job!