Continuous rotation servos effect on RC revceiver

[Joker94]

Hi every one

I have recently taken up RC planes. I now want to use my radio to control my current robot. What i was wondering is will continuous rotation servos (modified standard servos) effect the receiver in a negative way. eg, draw to much current and effect the receiver.

My receiver is the spektrum AR6200. It is running from a 4.8v 1100 mAh battery.

Has any one done it or have any experience.

Thanks a lot

Joker94

[amando96]

I have used a kyosho perfex with 6v and 2500mAh battery, it worked fine, but there are several ways of transforming continuous rotation servos, if you still have the motor controller, it should be fine i think

[Soeren]

Hi,

[...] will continuous rotation servos (modified standard servos) effect the receiver in a negative way. eg, draw to much current and effect the receiver.

The servo signal is very low power and the servo power, although drawn from the connector on the receiver is most likely a direct power bus, so it shouldn't have problems with current draw of the servos.

I don't think the servos will use all that more power in continuous mode, than when holding either the speeder of a glow plug motor or flaps/rudders in place.


If in doubt, measure the temperature of the receiver each 5..10 minutes on a long (hard, torque-vise) test run - just feel it, no need for precision and if it feels uncomfortably hot i.e. can be held, but you rather wouldn't, it will be around 45°C (+/-) and that it's slightly too hot.

[Joker94]

Thanks amando96 and soeren.

When i have tested it i will report back.

Cheers

joker94

[Imignant]

Hey,
I've been flying for many years now and have been tinkering with continuous rotating servos for a couple as well, just a warning, if you are putting them under a lot off stress and using more than one I would buy one of these guys, http://servocity.com/html/servo_power_boards.html 
I bought one a little while ago and it works great.
I use a Futaba 2.4 and if Spectrum is anything like Futaba, i.e. 100 receivers, then I would not risk burning it out, just hook up a separate battery to the board and your good.  I also connected a large Capacitor for any power spikes and an LED to discharge to Capacitor, that might be a little over board but it works for me...

[Soeren]

Hi,

Or make one yourself for substantially less than $18.

All that's needed is connecting the servo signals to a board that has power busses (and a common ground, but that would likely be driven from the same power source as the receiver, so no special arrangements would be needed).
I thought receivers in general was using bus power, as it is the logical choice - cheap and stable.

[Imignant]

I suppose some people do, but not in the electric plane world, you use the BEC on the ESC, and currently I'm using the the BEC on my sabertooth.  I'm also using pretty large servo's, I would like to here your opinion if you think it is ok putting that much current through the receiver bus.
As for building one on your own, even if you buy the universal adapters on ebay(if you can win the bid in a timely manner) and wire and board and put it all together, I dont think you'll save much.

[Joker94]

thanks guys

so have the power lines for the servo coming from the direct power source and have the signal lines to the signal pins on the receiver.

and yeah the AR6200 is $105 so i cant afford for anything to happen.

thanks again

Joker94