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HelicopterRadio - Spektrum DSM › Help with a DX8
05-01-2011 10:08 PM  6 years agoPost 1
helitom

rrApprentice

Pine Grove, Calif, USA

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Lemme start by saying that I'm not a Spektrum guy so the solution to my problem may be obvious to those of you who are Spektrum guys. I just don't understand some of the things going on and am trying to find advice and voices of experience.

I am setting up a heli for a nubie; Trex 600 electric - DX8 DSM2, R8000 and MicroBeast V2 flybarless. Receiver power supply is 7.4 Lipoly through a Turnagy voltage regulator; not using BEC power from the ESC. All is brand new equipment.

Set up of Microbeast and transmitter went well and all controls operate as I expect them to. If I was dealing with a radio system with which I am familiar the next step would be test flying and doing the final tweaks. However, I am not confident that all is working as it should. Now to the specifics of the problem:

Now that set up is completed, When I turn the system on I don't get a solid red on both the rcvr and the satilite rcvr after the microbeast boots up. One or both receivers starts a blinking red which never goes back to a solid red. In short order, both rcvrs start blinking red. The controls seem to function properly, but the blinking does not stop. In addition, I almost always get an uncommanded collective control (2-3 times cycling of collective through it's full range) as if the microbeast is rebooting, even though it is not.

Other data....The transmitter is not in the range of those recalled by Spektrum. I am thinking that maybe the airborne system may be going into a low voltage situation and am pursuing that now. But, I can't explain or stop the rcvrs from not locking on or the uncommanded collective cycling, and can't tell if it is the transmitter or the microbeast.

I assume that I do not want to attempt to fly until I get a solid red on both the rcvr and satilite. Is that correct? Clearly the uncommanded collective problem must go away before I spin anything up.

Any thoughts?

The older I get, the fewer things seem worth waiting in line for.

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05-02-2011 12:47 AM  6 years agoPost 2
helitom

rrApprentice

Pine Grove, Calif, USA

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Well, I checked for a receiver voltage and current problem and found that all was well within required paramenters.

I then did a re-bind of the receiver to the transmitter and, well....., all the problems seemed to have disappeared. I ran the transmitter/helicopter for about 20 minutes without getting flashing LED's on either receiver. Also did not get any uncommanded collective changes. Does that sound right for a Spektrum system?

The older I get, the fewer things seem worth waiting in line for.

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05-02-2011 01:57 PM  6 years agoPost 3
BarracudaHockey

rrMaster

Jacksonville FL

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Keep in mind I've not messed with a microbeast...

Blinking lights (slow flash) means that the receivers lost power.

Not sure how that thing enters the equation without seeing it but its possible the beast is booting before the reciever finishes linking and thats what was causing the problem.

Andy
AMA 77227
http://www.jaxrc.com

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05-03-2011 01:49 AM  6 years agoPost 4
chondro1

rrNovice

York, Pennsylvannia

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I have a dx6i and have found that when changing a battery pack you must turn off the radio, turn it on then plug a new battery pack in for both rx to go into solid orange

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05-03-2011 01:58 AM  6 years agoPost 5
cbflys

rrVeteran

Nesconset, NY - USA

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Blinking RED lights are the hold indicator. Blinking orange lights are the power loss indicator. If you're in DSM2 mode and you didn't turn off the transmitter and cycled the RX power, the orange and red lights will blink.

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05-05-2011 05:10 PM  6 years agoPost 6
jschenck

rrProfessor

La Vista, NE.

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I would suggest hooking up the TM1000 telemetry module that came with the DX8 to the AR8000 receiver. This will tell you what the voltage the receiver is seeing (and min/max) plus it'll tell you if the receivers are seeing frame drops and/or holds.

two things to be aware of:

1. You must power off the TX and power it on before powering on the RX. I always let it take a second to shutdown before powering the TX back on (don't just snap the power button, let it reset properly)

2. You need to have the TX at least 2' away from the RX when they initialize. If they are too close then they may not link up properly.

Also, it's really important that the DX8 has the latest software, currently V2.01. Some important bug fixes in there. Rebind after the upgrade so that the AR8000 and DX8 can start talking in DSMX protocol.

fyi, you can't mix/match DSM2 and DSMX satellites and RX's. e.g. using one DSM2 satellite and one DSMX satellite on the FBL controller or putting a DSM2 satellite on a DSMX receiver.

They ARE compatible with each other from the TX to RX standpoint where a DSM2 TX can talk to DSMX receivers and DSMX TX can talk to DSM2 RX. Just can't mix/match on the RX side in the same application.

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HelicopterRadio - Spektrum DSM › Help with a DX8
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