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HelicopterRadio - Spektrum DSM › Spektrum receiver keeps rebooting
12-19-2013 05:54 PM  3 years agoPost 1
datidun

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N Ireland

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Hi guys im looking for ideas to figure out whats gone wrong with my electrics,i usually have 3 flights at a time on my Trex 600 nitro,using a 6v nimh battery with a Spektrum AR8000/DSMX satellite,I was checking over a few things over on the bench while playing with the sticks for around a minute or so,then the Swash plate jumps and the receiver and Satellite lights flash,as in rebooting itself,checked the battery puts in a good full charge,checked all the wiring going from the satellite to the receiver,checked all servos and wiring,i cant find any faults,I rebinded it several times,any ideas what would cause this,could be disastrous in the airGyro 520 stayes as it is and so do all the servos,I still have normal control to the servos as usual

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12-19-2013 06:03 PM  3 years agoPost 2
Pistol Pete

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Seffner, FL

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6v nimh battery

You need to find a means to read the Rx voltage while under load.

ie: lift heli by swash plate and move throtle stick up and down. This should put a load on all three cyclics.

~~Enjoying the hobby one flight at a time~~

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12-19-2013 06:21 PM  3 years agoPost 3
datidun

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N Ireland

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Ok so are you thinking low voltage,the battery is fully charged.

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12-19-2013 08:07 PM  3 years agoPost 4
cbflys

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Nesconset, NY - USA

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DSMX has a pretty fast re-link time, so even brown-outs come back very quick. However, my money is on the batteries not being up to the task ...

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12-19-2013 08:21 PM  3 years agoPost 5
Flyin for Jesus

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Dana Point, Ca.​92629

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I have weird issues when working on my helis in the garage about 10' from my 2.4GHz wireless router. Fades, frame losses and holds all happen when testing. ( I have the spektrum flight logger which shows me all this )
When I go to the flight field, I re-bind and check the log and rarely have any fades, so I have 0 frame losses or holds.

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12-19-2013 08:32 PM  3 years agoPost 6
datidun

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N Ireland

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cbfly you could be right,after several hours at working on this,i tried 3 different switches and another two 6v nimh batteries,and after playing with the sticks especially when i flick the idle up switch then all four servos move quickly and while watching the meter the voltage drops a lot for a second or two,then the receiver and satellite lights flash and swash plate dances a bit,BUT the part i dont understand is,if I bypass the switch and plug the 6v nimh battery into the receiver,all works fineso my question is does the switch take its fair share of voltage,the other thing i did was put the switch back on and connect my good Life 6.6v battery and BINGO no lights flashing,so it must be voltage,my servos are 4x ds 610 and 650 on the tail

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12-19-2013 08:37 PM  3 years agoPost 7
cbflys

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Nesconset, NY - USA

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You seem to have a fair amount of resistance in the switch and/or its connectors. The little bit of extra voltage you're getting with the LiFe pack is probably keeping the voltage just above the drop-out voltage of the RX. None the less - I think you've answered your own question. The NiMH batteries aren't up to the task.

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12-19-2013 09:26 PM  3 years agoPost 8
Ronald Thomas

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Gainesville, Fl, USA

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Two things

(1) Are you are sure you are using the DSMX protocol? I thought the DSMX did not flash in a power outage situation but DSM2 still did. Just a thought and has nothing to do with your problem.
(2) Get rid of the switch and solder Deans directly on. No more issues with failing switches…..

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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12-19-2013 09:29 PM  3 years agoPost 9
cbflys

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Nesconset, NY - USA

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That's correct, DSMX would not be flashing the orange link lights - so he's probably using the DSM2 protocol. The re-link would still be quick though due to the QuickConnect feature.

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12-19-2013 10:11 PM  3 years agoPost 10
Ronald Thomas

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Gainesville, Fl, USA

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I just reread that and he said it flashed not necessarily flashing….it can still do that, I may have just misinterpreted what he said...

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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12-19-2013 10:11 PM  3 years agoPost 11
BobOD

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New York- USA

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datidun,
Are you saying the rx and sat lights flash....or they continue to flash after the event?

Team POP Secret

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12-19-2013 10:19 PM  3 years agoPost 12
Stephen Born

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USA

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Darren,

The replies above are sound advice; however, I believe it to be another issue that has yet to be mentioned in this thread.

The Rx and satellite are connected to a wire. It is common for these wires to become loose. This occurs from pulling or pushing on the connectors. They are extremely delicate and are easily deviated from its base connector. This swash "bounce" is one of its unfortunate behaviors.

All said, I would check the connector wires and replace.

Thanks and good luck.

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12-19-2013 10:38 PM  3 years agoPost 13
jschenck

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La Vista, NE.

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BUT the part i dont understand is,if I bypass the switch and plug the 6v nimh battery into the receiver,all works fine
I think you have your answer there. Replace the switch with a solid "plug it in and unplug it" connection using something like a Deans or EC3 connector. No switch to be concerned. If I do use switches I always recommend using two sabililitywitches just for this type of issue and the ability to carry the current.

Here is an example I did a few years ago with an EC3 as a jumper

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12-20-2013 08:24 AM  3 years agoPost 14
datidun

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N Ireland

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Thanx very much for the replies,yes the light on the receiver and Satellite will continue to flash,as i said i put the Life 6.6v battery back in,then all is ok the Swash does not jump and lights stay on solid,if the 6v nimh battery goes in plugged into all 3 switches that i tried,it will reboot after a minute or so,but it will work if directly plugged into the receiver as mentioned,I am using 1x DSMX satellite,it does reboot extremely quick within 2 seconds,the original switch is new heavy duty JR 3 wire switch,its very annoying that no matter what switch I use it reduces the voltage
Darren.

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12-20-2013 09:46 AM  3 years agoPost 15
Ronald Thomas

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Gainesville, Fl, USA

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Either you have a lot of bad switches or a bad connection after the switch. Either way, get rid of the switch and connectors and go with Deans or EC-3s and all your worries will disappear

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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12-20-2013 12:39 PM  3 years agoPost 16
datidun

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N Ireland

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Handy thing about a switch is,the canopy stays on,no plugging in and out.

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12-20-2013 12:48 PM  3 years agoPost 17
Four Stroker

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Atlanta

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I have a patent pending innovation to solve this problem. It's called a switch hole in the canopy. The prototype turned out quite well. It was made with a small Dremel sanding drum.

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12-20-2013 12:58 PM  3 years agoPost 18
datidun

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N Ireland

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I just tried a fully charged 7.2v nimh,works fine,then tried another 6v nimh reading 6.6v then the lights will flash and reboot,i also tried another brand new satellite wire,same result flashing lights,thinking this must of happened in flight and not knowing,i mat have gotten away with one flight,it seems to reboot extremely quick,still think it could turn out bad however why do i have still control to heli,if the lights are still flashing

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12-20-2013 01:12 PM  3 years agoPost 19
Pistol Pete

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Seffner, FL

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Warning...Low Battery Alarm

could be disastrous in the air
I have discovered in my DX9, that I had to increase the default "Low Battery" alarm from 6.4V to 6.8V

If left at the minimum/default, it will buzz as designed BUT TURNS OFF RADIO.

Great way to test failsafe. Not.

~~Enjoying the hobby one flight at a time~~

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12-20-2013 02:07 PM  3 years agoPost 20
datidun

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N Ireland

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I spoke to some guys who all fly with switches they have never heard of the switch reducing the voltage

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HelicopterRadio - Spektrum DSM › Spektrum receiver keeps rebooting
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