First you need to convert the load in torque. A 400g load on a 10cm arm is much greater load than on a 5cm arm. You also probably need to specify the acceleration required. To cheat (simplify) you could estimate the max the torque and get a motor with 10 times that value.
I can see that needs looking into. I’ll look at all that. I guess what Im really asking is what are the components that I need to do this (ill work out load rating etc later) so that i can build this concept in a small cheap effecive package.
This is all new to me and its a one off. dont know where to start or what you even call the parts and dont know what options there are for programmable controllers. I just need something - a servo is what think i need - that rotates x degrees at y freq, where x an y can be programmed. The mechanics ill work out later.
I was to have a pice of aluminium tubing probably significantly less than the 400g. But this will just be inline with the motor axis, and so it will simply be rotated with in the long dimension of the piece of tube. so the load is not so important apart from the strength of materials as it will be essentially balanced. its more the companonets the control system im interesting in
There are a number of dedicated servo controllers that you program with a spreadsheet on your computer and once you get it the way you want it, you download it to the controller and it repeats the sequence indeffinitely. I got one off Ebay that runs, I think, up to 10 servos for under $20.
I guess I should describe what I want to do a bit more. Please see enclosed basic sketch
I am an artist, not an engineer but need to build this. That’s where you come in! ;o)
I need to do this as cheaply, easily and with minimum know how and soldering etc.
Essentially I want to rotate a 400g tube on its axis. This is a tube with spray heads and is connected to a lightweight paint tubing.
I want to program varying angles and frequencies so that the spray head tube rotates as paint is gently pumped through the tube.
I need to house this is a waterproof box/case of some sort, so if there is a pre made product with housing that would be great. I will mount this on a tripod or similar.
As for programming, I want to easily be able to program it in a quite specific manner
eg rotate 50degrees at 1hz for 15 seconds, then 2 slow 30degrees rotations over 5 seconds and so on etc.
Ideally, I would like to be able to program it by some sort of simple time based input device, eg presses of a key in a recording process as I am planning to put this to music (don’t ask!)
I guess I should describe what I want to do a bit more. Please see enclosed basic sketch
I am an artist, not an engineer but need to build this. That’s where you come in! ;o)
I need to do this as cheaply, easily and with minimum know how and soldering etc.
Essentially I want to rotate a 400g tube on its axis. This is a tube with spray heads and is connected to a lightweight paint tubing.
I want to program varying angles and frequencies so that the spray head tube rotates as paint is gently pumped through the tube.
I need to house this is a waterproof box/case of some sort, so if there is a pre made product with housing that would be great. I will mount this on a tripod or similar.
As for programming, I want to easily be able to program it in a quite specific manner
eg rotate 50degrees at 1hz for 15 seconds, then 2 slow 30degrees rotations over 5 seconds and so on etc.
Ideally, I would like to be able to program it by some sort of simple time based input device, eg presses of a key in a recording process as I am planning to put this to music (don’t ask!)
