Looking for a robot arm that can hold a 225 grams hammer (art project)

Hi @larakster and welcome to the forum.

You have an interesting project :slight_smile:

225 gram is not too much, so you should be able to find a relatively small robotic arm.

You can see here which Robotic Arms RobotShop sells: https://eu.robotshop.com/collections/robotic-arms

For example, have a look at this one: WLkata 6-Axis Mini Robotic Arm Mirobot Professional Kit - RobotShop

It is relatively small, not so expensive, it has a controller and payload of 250 grams.

I hope this helps a little bit.