Your typical model servo is capable of very fine adjustment over a range of about 90° or so. It
measures about 40 x 20 x 35mm, weighs about 50g and has a torque somewhere
around 5kg-cm (some a bit more, some a bit less).
Our new "Jumbo" servo is also capable of very fine adjustment
over a 90° range. It comes in at 180 x 110 x 110mm, weighs about 1300g and has a
torque somewhere in the kg-m range (no, we couldn't measure it!). Suffice to say
it's a tad more than "typical" model servos!
What on earth would you want that sort of muscle for? Here are
just a few applications that we thought of – you can probably think of many more
(in fact, right now there are readers throughout the South Pacific thinking "at
last! Now I can.....").
- Robotics - no longer are you limited to piddly little designs. Build a monster!
- Radio control of large (eg, 1/4-scale or even bigger)
models - steering, brakes, etc which require some real power.
- Remote (as distinct from radio) control (ie "fly by
wire") in real boats, cars, etc - eg, the rudder, trim or even throttle control without the usual mechanical linkages.
- Rotator for a radio or TV antenna; even a satellite dish
- Remote gate or door controller.
- Heavy duty pan or tilt controller for a remote camera or
camcorder - eg, unattended wildlife photography or surveillance work.
- Remote (or even local) electronic control of valves or
flow control devices, especially if they are in hazardous areas.
- Flue, vent or high hopper window openers/closers.
- Remote winch or sail furling on a real yacht (you add
- Perhaps (obviously with additional electronics) even
navigation control with feedback from a GPS unit (as published last month in SILICON CHIP).
We're sure we have merely scratched the surface of ideas for
this one. It's one of those projects that is a solution waiting for an
application – and there are literally countless applications.