Hello good people,
I need your help recommending a very strong servo.
I'm going to build a pet feeder.
The purpose of the servo is to rotate a wheel, similar to the logic of a hydroelectric power plant, that drives the water.
There will be approximately 750 grams of pellets above the wheel, so it needs to be strong.
I have checked on MG995 but I am very unsure if that is insufficent.
Thank you in advance.
What rotational speed does your project require? Does it require 360 degree rotation or just an angle? Use levers to multiply the torque of the servo. Have you actually measured the force needed?
You can look-up the torque spec for a servo. I think they use servos to control the flaps on airliners!
Servos don't rotate 360 degrees.
You probably don't need high-precision so you can use a DC gearmotor and one or more rotation/position sensors (optical, hall-effect, or maybe simply microswitches).
A gearmotor would be a much better choice than a servo. Not much power is needed if it is geared down sufficiently, as done in battery powered pet feeders.
You will need a suitable motor driver.
Ok any certain you recommend?
You have never offered the final rotation speed needed!!!
I only need a motor that makes spins 1 lap very slow.
Pololu has a great selection of gearmotors. You will need to define "very slow".
I would start with a Google of "Augers"
I would just use a simple DC Gear Motor running an Auger. Pet food gets below a certain level motor runs till pet food hopper is full above a certain level. So you monitor LL (Lower Level) and UL (Upper Level). Anyway I would use an Auger in a piece of PVC pipe as seen in the link. I do not see a servo motor as a solution.
Ron
Do you have everything built except the motor?
No I am on the design phaste just made some sketches before I start 3d printing.