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HomeAircraftHelicopterMain Discussion › Life-Span of electronics?
10-11-2012 04:24 PM  5 years agoPost 21
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Electronics by themselves can reach 50 years or more.
Things that shorten life...
1) Moving parts with switches or pots (servos fall into this)
2) Over voltage stress
3) Cheap capacitors (Many parts have super caps in them now days, lifetime is probably limited to battery status)
4) Batteries (already discussed as limited lifetime)
5) Poor construction or protection, cheap PC boards (corrosion)
6) Abuse (crashes or other physical abuse)
7) Excessive heat.

Servos fail because of mechanical, the wiper pot or gear damage, it's not the electronics itself. (One reason optical servos will be very popular someday).
.
Sorry, I separate electronics from attached mechanical parts. Just me I guess.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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10-12-2012 03:07 AM  5 years agoPost 22
Twrecks600

rrKey Veteran

Round Rock, Texas

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I have around 1300 flights on my Trex 700E and the servos, ESC, and the BEC are original. The 3g was original until about 100 flights ago when I upgraded to the V-bar. The motor probably has around 900 flights on it and I have replaced the shaft and bearings 3 times. All the winding and electronics are in GREAT shape so....

Team me

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10-12-2012 05:07 PM  5 years agoPost 23
piranhafreak

rrVeteran

Manahawkin NJ

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I will never know i never keep anything long enough i have never had anything wear out. Mabey one day i will get somthing i cant part with but thats unlikely

Mabey one day i will actually land one of these things !!

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10-12-2012 10:01 PM  5 years agoPost 24
Sar

rrElite Veteran

Saugeties, NY

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Interested. I am sure vibration affects the life of gyros in FBL systems.
MEMS accelerometers can have very low general failure rates and lifespans up to 2 million hours (Mean-Time Before Failure/MTBF) are built to be in high vibration environments and diverse thermal environments. There's a paper out there called "Quantitative Accelerated Life Testing of MEMS Accelerometers" if you enjoy that kind of thing like I do.

Crashes on the other hand may pose a risk, but a lot of them are pretty durable. One I just picked at random, a STM LIS331HH has a "10000 g high shock survivability" I think you're more likely to damage the supporting electronics before you damage the accelerometers used in FBL systems.

--
Jon

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10-12-2012 10:55 PM  5 years agoPost 25
Stephen Born

rrElite Veteran

USA

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MEMS accelerometers can have very low general failure rates and lifespans up to 2 million hours
2 million hours? I'll be dead by then so I'm good.

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