#340 | Stacked Servo

Item #240 is a new design approach on the basic servo shape the market’s accustomed to.

Approximately 12x12x29mm in dimension unlike the regular 9gr servo 12x32x29mm. This radical reduction in size lets the user fit twice as many servos on any given project.

The main principle relies on stacking every inner component upwards rather than spreading them sideways.

The stacked servo can be used the same way as a regular servo:

Hook up its female 3-pin cable to an RC controller, an Arduino board or any other project as one normally would.

Anchor the servo itself to the project’s chassis and link its moving part to the servo tip with a servo arm.

Due to the differences in construction and motor types, the stacked servo can theoretically excess three times as much torque than a regular servo.

For future models one thing I imagine is adding an adapter with bevel gears to do an T or L styled shafts so these could truly become parallel and embedded within the elements they move.

I always had a disdain towards servos made for maker communities and hobbyists. I’ve personally never seen someone truly appreciating the shape of a servo arm with all those box-y tumors on their joints.

I was working on EMET, I was in a constant struggle between the amount of functions required and the available space I’ve had.

I really tried to make the servos smaller and broke a good half a dozen of them in the process.

While playing the the shapes I had from salvaged servo parts I’ve quickly realized I could use a compact planetary gear motor rather than a weaker version with a gearbox. The feedback servo could be adjusted directly by the shaft that anchors the servo arm. I am positive we can even make the circuit board small enough to fit a circular profile by the bottom until when I’ll mass-produce these.

I truly believe these will become quickly the most sought out kind of servo on the market and a key element in each and every single robotics project I’ll have in the future.