I will try to open a door with a servo motor. The door weights 5kg, and slides from left to right (like some shop with automatic sliding glass doors, but there are often two of them and open from the center to the sides.)
So I need a very powerful servo, not a toy this time (I tried and went horribly wrong with some.. TINY mg90s and I don't want to go THAT wrong again).
I just need advice on the servo, not the whole project as it is already sorted out.
Size is not a concern. Price should not be more than 500$ (hey, it is just my room door, after all). The more the torque, the better. Electric consumption: I don't want to double my bill.
I don't care about the overall shape, I can put it in the wall if I am willing to
Number of opening/closing per day: grossly 10-15.
The door should open at approx 10 km/h (quite fast, I don't want to stand in front of the door for too long).
I need a servo of which I can control the rotation and that is able to make full rotations as well (360°+)
I will ideally be able to control it with my arduino mega or a PI2 (but the arduino seems more than enough).
Bottom line: I need a powerful servo which can tackle the weight, at a very decent speed.
The linear actuator from Motion Systems are very good and just within your budget. There are cheaper ones from Robotshop that will probably work for you.
Your idea makes me think of something: we could make the limit switch mobile.
I mean, if I want to add a way to open the door at a different steps (to let the wind enter my room, with a way to control how much), I would only need a cheap continuous rotation servo to place (move) the rail properly and a mean to "fix it" at that position;
The limit switch would still stop the movement of the gear motor to open the door like I want.
Hi,
Will you get it to make swishing noise like on STARTREK.
The automatic doors that I have seen, use a motor -gearbox-drum and wire cable with pulleys at each end of the track.
As MarkT has said, a motor and belt or chain even, a cycle chain in a loop.
