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HelicopterAerial Photography and Video › Opto-isolators Needed?
05-05-2005 05:05 PM  12 years agoPost 1
RoadkillBC

rrApprentice

SE Wisconsin

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Have any of you found the need to use an opto-isolator device like the Glitch Buster? I'm flying a Joker 2 equipped with a Glitch Buster now, but I've been thinking about the reliability trade-offs of keeping it versus using a single battery pack to run the servos and receiver directly. I've never flown my Futaba R149DP receiver without the Glitch Buster, so I thought I'd check with you guys before experimenting.

Glitch Buster Pros:
* Helps eliminate noise from servos, wires, ESC, and motor.

Glitch Buster Cons:
* Potential circuitry that can fail.
* Dedicated receiver battery means additional battery that can fail.

Any input on this topic would be greatly appreciated.

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05-05-2005 07:10 PM  12 years agoPost 2
daggit

rrElite Veteran

Claremont, MN

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Dedicated receiver battery means additional battery that can fail
You make a valid point. But...

Although I haven't tested it, I've been told that when a 4 cell rx battery is isolated from the servo batteries it has enough juice to work even if one cell goes bad. If a cell goes down on a single battery setup you're screwed.

It could be argued that with a good charger you'd know about a bad cell when you're charging. Who knows.

I have only recently started running an opto-isolator. My 1100 mah rx battery lasts FOREVER now. And the servo battery goes a bit further too. I run the i4c isolator.

I recently got a glimpse inside a high-end RC stunt plane. JEEZUS, the electronics in it were nuts. The switch can short circuit without affecting it, a servo can fail without affecting it, a battery can short cicuit without affecting it... A little too much electronics for my helis though!

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05-06-2005 03:00 PM  12 years agoPost 3
RoadkillBC

rrApprentice

SE Wisconsin

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That stunt plane sounds like quite a rig. I considered adding a 2nd receiver pack for redundancy, but that's about as far as I'd go with it.

I'm running a 10s3p brick, so a single cell failure probably won't knock me out of the sky. On the other hand, a UBEC failure would be a very bad thing, so I may add some sort of backup pack & circuit whether I remove the opto or not.

Anyone else running an optoisolator in their Joker? Maybe I should have gone with the poll format...

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