Linear servo with pager motor - 4 linear servos in 3cm x 5cm cylinder

[fbradasc]

Hi,
I'm working on a mini linear servo system in a small cylinder about 5cm diameter and 3cm length, with 4 linear servos and a motor propeller which uses 4 pager motors for the servos.

Hope this idea could be useful.

[raalst]

very nice ! Thanks for

very nice ! Thanks for sharing.

but how do you plan to make the movement lineair ?

do you have gears already ?

Please continue posting as your project progresses!

[JWLaRue]

Very nice packaging of the

Very nice packaging of the motors. Any idea of what the associated electronics package for the servo motors wil lbe?

-tnx,

Jeff

[fbradasc]

The electronic circuitry is still

The electronic circuitry is still a work in progress, however the 5 motors will be driven by 3 circuits using the L293E dual H-Bridge motor driver IC (see schematics I attached at the bottom of my page).

The 3 dual motors driver circuits will then be controlled by a PIC microcontroller.

The linear movement is obtained by means of endless screw principia, you can see this in the pictures impg0135, impg0144, impg0145 and impg0149.

The endless screw is a M3, 3cm length bolt, to the bolt is screwed a modified connector (the one used in the mammuth connectors) which in turns slides over a 3mm diameter brass rod.

I still thinking how to couple each mini motor with a bolt...
Has someone a reliable idea ?
I thought to use small rubber bands...

[raalst]

there are several vendors of

there are several vendors of small gears.

e.g. lemo solar
and Conrad of course (although they might not have small enough
gears).

I think rubber bands will slip easily, you might want to consider
toothed belts, but i think these are often too big for your
application.