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HomeAircraftHelicopterHelicopter Main Discussion › Static and Spektrum Brownouts
12-31-2010 04:21 AM  7 years agoPost 1
AtTheCross

rrVeteran

Southern CA

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Just bought these mats from Harbor Freight, sorry they don't have a picture of it, will post one later.

Laid them out in front of where I work on my heli's, went for a test flight and brown out, did some checking of the heli, and battery, etc, etc nothing, still getting brown outs.

Went to shut off my battery charger, and I got a little zap, this never happened before, so I took out my static meter (yes, I have a static meter, I'm in electronics) and I was getting about 3,000 volts of static off the mats!!!

Now all the brownouts happened after installation of the mats, I had a great afternoon of flying (pre-mat installation) no issues (never had this issue). Thought I'd do some nite flying (post-mat installation) and that's when the brown outs started

Will post pictures of the mat and of the meter readings tomorrow

Just a heads up

ASI Green Mongoose CY29RC - 67 flights

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12-31-2010 05:29 AM  7 years agoPost 2
JasonJ

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North Idaho

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Interesting. I guess you should remove the mats and see if the issue stops. Where are you turning on your tx and helicopter?

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12-31-2010 06:22 AM  7 years agoPost 3
AtTheCross

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Southern CA

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Mats are removed, no more brown outs. Yeah was turning on tx then heli at the bench

ASI Green Mongoose CY29RC - 67 flights

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12-31-2010 05:45 PM  7 years agoPost 4
JasonJ

rrKey Veteran

North Idaho

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Hard to say if the mats are a big part of it, but if you are turning on in your shop, you could be having linking problems. It is better to turn your stuff on outside in a cleaner RF environment.

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12-31-2010 06:20 PM  7 years agoPost 5
stargazerww

rrApprentice

parkside, pa.

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why is it i still hear a lot of brown outs on the spektrum stuff, and i never heard of this problem in the futaba fasst systems. you would think spektrum would have taken care of this problem by now because this is a serious safety issue. i have had 2 fasst radios and never had a issues

this is just a observation not a bashing, spektum has made great strides in there technology .

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12-31-2010 06:25 PM  7 years agoPost 6
AtTheCrossrrVeteran - Southern CA - My Posts: All  Forum  Topic

well, i'm coming from a walkera 2801Pro with a 8ch rx and had never had a brown out or heard of anyone having one.

i know nobody but walkera guys like walkera, and i loved my walkera, so much easier to program than my dx7.

the only reason i dropped the 2801Pro for the dx7 is that i need a heli setup for me and i know my lhs dude will not do the work if i brought in my 2801pro

i don't know if the walkera would have had issues with 3kv of static or not, but it is in an enclosed case, don't know if the enclosed cased spektrum stuff has brown out issues, I had the issue with a ar6100e v1.6

ASI Green Mongoose CY29RC - 67 flights

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12-31-2010 06:45 PM  7 years agoPost 7
dkshema

rrMaster

Cedar Rapids, IA

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why is it i still hear a lot of brown outs on the spektrum stuff
Actually, you don't hear a lot about brownouts on Spektrum stuff these days. One post on a thread that uses the term by someone who isn't even sure that's what he's seen doesn't make me get all excited anymore.

Brownouts are indicated on Spektrum radios these days by blinking lights on the RX. They are an indication of low input voltage.

In this case, the culprit seems to be direct static electricity discharges into the radio, not low voltage brownouts.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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12-31-2010 06:52 PM  7 years agoPost 8
AtTheCross

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Southern CA

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from reading the manual, that's how i defined my 'brown out' my rx would be fine then go to low hover and the rx would start to blink and then the heli dropped to the ground.

i removed the mats, everything else the same, even the same battery and no blinky rx (brown out)

i'm not bashing one tx/rx over another, just a heads up on the floor mats, they are a HUGE static generator.

ASI Green Mongoose CY29RC - 67 flights

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12-31-2010 07:17 PM  7 years agoPost 9
Zaneman007

rrElite Veteran

Texas - USA

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Brown outs
There seems to be a lot of "MISS-INFORMATION" out there.

And Futaba RC is not helping. They are using it to market their stuff.

Bottom line.

A brown out is when the input voltage to the Rx gets below a certain voltage. This goes for both Futaba and Spectrum 2.4Ghz receivers .

This issue was common when using high voltage servos with 4.8V nicads.

Truth is:

Spectrum and Futaba Rx's brown out out the same voltage, period. Do a search there is a vid on RR showing just that.

Resolution:

Most of us are now aware of the voltage requirements, issue solved.

P.S. The matts prevent the static electricity from discharging through your feet, so it goes through your hands.

Old Guys Rule!

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12-31-2010 07:18 PM  7 years agoPost 10
stargazerww

rrApprentice

parkside, pa.

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the mats are not generating the static the are preventing the discharge from the heli to ground when you go to arm it. so when you take away the mats and then arm your heli, u touch the heli and discharge the heli and then you have no issues. try replacing the mats and as you arm your heli touch the metal face plate of a outlet or a copper pipe to ground yourself and see if you still have the same issue

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12-31-2010 09:35 PM  7 years agoPost 11
AirWolfRC

rrProfessor

42½ N, 83½ W

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Get some anti-static (conducting) mats.

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12-31-2010 09:47 PM  7 years agoPost 12
wtvariety

rrVeteran

Charleston wv

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or just arm your heli outside

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12-31-2010 11:13 PM  7 years agoPost 13
AtTheCross

rrVeteran

Southern CA

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for the record, there are static generating materials, friction across the surface either direct contact or air moving over material will create static electricity. rubbing a balloon on your head and sticking it to the wall, or going out on a windy day and people with fine hair will have static hair, and yes because there is no path to ground is why this is happening

and there are anti-static as well as static dissipative materials, the common ones seen are pink bags, known as pink-poly, they do not prevent static from coming from the outside and zapping the parts, they prevent the item inside the bag from building up a static charge while moving in the bag.

the black/metalic looking bags you see electronics come in will prevent static build up inside the bag as well as preventing static from the outside to zap the item inside the bag

Yes, grounding the mat will help, but unless the material conducts evenly across the entire service, you can still have static build up.

with anti-static mats, you still have to hi-pot test them to ensure that they will ground out any static. also get an ion genterator to blow across the surface to remove the charge.

you can spray downy fabric softener on surfaces as well to reduce the static

the simple solution is to remove the mats, which i have down

sorry if i used the wrong term for brown out, but the manual says when the led blinks it's because of a brown out.

again, all i'm trying to do is let people know about the mats and that 3kv of static will damage electronics

here's a picture of two of the mats, 4 come in a package. the >3kv reading is lower left, the ~1.5kv reading is upper right and the zero reading is middle of the mat, all measurements taken on the same mat and at the same distance

ASI Green Mongoose CY29RC - 67 flights

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12-31-2010 11:20 PM  7 years agoPost 14
thtoyman

rrKey Veteran

Gone ,Flying.

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Its things like this from keeping me from trying 2.4

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01-01-2011 01:43 AM  7 years agoPost 15
burntclutch

rrNovice

Israel

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???
I just bought an hitec 2.4 , what is all thiss cr*p i hear about lockouts brownouts exct.
I read a lot about it on all forums.(specialy the Dx systems
Is this broblem endemic on all 2.4 systems ???

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01-01-2011 01:50 AM  7 years agoPost 16
stargazerww

rrApprentice

parkside, pa.

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i have never had a issue with futaba gear and i have armed up on my carpet in the living room for setup and programing not flying of course..im not that brave or stupid

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01-01-2011 01:52 AM  7 years agoPost 17
lordraptor1

rrNovice

armore oklahoma, usa all the way

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i have NEVER had an issue with any spektrum system i have owned including my DX7, i HAVE however had issues with all things futaba fasst so i will no longer touch a futaba system. if it comes down to no other choice but futaba then i will be out because i still wont touch one, spektrum first jr second, airtronics third and NO futaba

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01-01-2011 02:31 AM  7 years agoPost 18
AtTheCross

rrVeteran

Southern CA

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alright, going to close the thread.

this was meant as a warning about the mats creating static, any piece of electronic equipment will be affected by static (ESD electro static discharge)

it was not meant to bash any equipment, just a warning about the mats.

happy flying to all

ASI Green Mongoose CY29RC - 67 flights

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