Spektrum Flashing Issue

[KnifeEdge]

Hi Dont know if this is a know problem or not, but I have a brand new AR9000 . I have binded no probs.

When i connect servos, gyro(spartan), battery. I get an intermittent fault.

I.e sometimes when I turn on it will flash all lights on the rx, or just one light.

Any ideas????

[KnifeEdge]

its appears to still work thou, it just flashes. Havent done a range check yet.

[robgt]

The receivers flash when you have turned them off but not the transmitter, and then turned the receivers on again (i.e cycled the power on the heli only).

Could it be that?
Cheers,
Rob

[TrexMADuk]

Yeah they do that ....

[Made2Fade]

yip this is a know problem and has been covered well on here before. You must cycle the TX power also every time you turn off the RX (heli).
Something to do with the TX saving settings when cycling the power.
So in short just cycle your TX power everytime you disconnect the heli battery. And dont fly with the flashing lights.
Cheers
Lee

[colin n]

Thats about it.

But it ain't a problem, it a usefull warning !!

Two reasons for the flashing lights.

1. If u notice it after a flight the it lets u know the Rx has re-booted for some reason, maybe low battery. ( before quick connect it let u know by throwing ur heli into the dirt ).

2. As mentioned if u don't swich off the TX inbetween turning on and off the RX. The reason for this is to let u know that it is still working on the previously selected freqs. every time u turn on the tx it will scan for 2 unused freqs.

so i suppose in theory u could have a flight in scotland, leave ur tx switched on then drive to Nottingham and shoot someone down.!!

of course this would require a fluke with better chances of winning the lottery.

[brin]

wasted lods of time trying to get the gyro with hh and the rx lights solid so when it does happen i just ignore it flys perfectly well no probs

[Made2Fade]

yeh it will do but then if the RX resets itself in flight you will never know. Could be dangerous because you wouldnt know to look for a problem.
Cheers
Lee

[KnifeEdge]

thanks all!

[brin]

lee with so many people flying with specktrum i haven't read anywhere on here where there has been an in flight warning . doe's it not mean that it has lost one of the signals and reset its self isn't that what it is supose to do

[cambs flyer]

This is my step by step routine when changing batts

1, Canopy off, Li Po disconnected.

2, TX turned off.

3, After 3 seconds TX back on.

4, Helicopter two feet from the TX, install new Li Po and connect.

5, Wait for the Gyro & RX LED's to go solid.

6 wait for a few beeps to end, connect Canopy then off.

Having the TX around two feet from the RX seems to stop the RX failing to arm, as I had a few issues as did others in this dept, and leaving the TX around two foot plus away from the Heli' fixes this completely.

[brin]

This is my step by step routine when changing batts

1, Canopy off, Li Po disconnected.

2, TX turned off.

3, After 3 seconds TX back on.

4, Helicopter two feet from the TX, install new Li Po and connect.

5, Wait for the Gyro & RX LED's to go solid.

6 wait for a few beeps to end, connect Canopy then off.

Having the TX around two feet from the RX seems to stop the RX failing to arm, as I had a few issues as did others in this dept, and leaving the TX around two foot plus away from the Heli' fixes this completely.

havn't read that one before wyane must definitely give that a try cheers mate

[cambs flyer]

Anytime Bro, if your Gyro light still flashes check the trim settings as the centre point may be off just a tad between the TX & Gyro, but hopefully doing the above all will be fine.

[cambs flyer]

Ohh another thing OB2, treat yourself to the Align Alloy canopy mounts, there far better then the plastic ones as they don't flex, and hold the canopy in place more securely.

Plus they look cool and cost peanuts.

HS1212 : Canopy Mounting Bolt (2)
Aluminium Canopy Mounting Posts for the T-Rex 450

[scallybert]

Dunno about the AR9000, but I got to learn quite a bit about the AR6200, AR6100 & AR6100E LEDs.

On firmware after V1.6, the lights will blink if the RX has performed a Quick Connect. ie it powers up, and finds the Tx it was bound to still on the channels that the Rx was using before it was powered down. (The Rx remembers this for a number of seconds - which seems to be indeterminate.)

QC is intended to save you if the Rx re-inits in flight, eg due to a brwon-out. It means the Rx can re-connect almost instantaneoulsy, rather than the several seconds (if at all), it can take otherwise.

You can also prompt a QC if you cycle the Rx power, without cycling the Tx power. (As referred to here, eg while changing LiPos.)

You can also see LED patterns similar to the QC ones if static has zapped your Rx. Static can also prompt an Rx init, leading to a QC.

If you have flashing Rx LEDs after or during a flight, you have a problem you need to investigate.

You won't know this if you don't start the flight with a solid LED.

Brin, seems to be referring to a gyro init problem, that seems to interact with QC.

I would guess this is down to issues about how youve bound the Rx.

How come ?

It takes some time for the Rx to perform a normal connect when it powers up. 'Some time' varies. I don't know the minimum, but it can easilly be 2 or more seconds, and connection may not occur at all.

Obviously during this time, the Rx doesn't know what values the Tx controls are set to.

So what ?

As soon as the Rx gets power, the servos, etc get power too. AIUI, the Rx has to start sending control pulses very soon after this. (I'd guess that otherwise there's a risk that analogue servos can damage themselves, or the model, by behaving randomly.)

Since the Rx doesn't have data from the Tx (until it connects), it uses the values you set at bind time.

This can impact gyros, as they may need particular gain and rudder values to init correctly.

[ http://www.rcheliaddict.co.uk/f34/sp...pektrum-16000/ has some stuff about a DS760 (esp what Lee has to say), that illustrates this. You may well have a different gyro, but it's the idea that's important.]

If you're not careful about setting up these bind-time values, the values the gyro sees when it inits will depend on how long it takes the Tx & Rx to conect that time. eg a QC may well cause the gyro init differently to if it takes several seconds to do a normal connect.

What Spartan recommend is that you set the bind-time values such that the gyro won't init. Hence, it won't init until after connect has ocurred, and the Tx is sending values that allow the gyro to init. [You want this so the DS760 can take the actual rudder stick centre as zero.]

I don't know how this applies to other gyros, but if your gyro needs (eg) an HH gain value to init correctly, and will get upset otherwise, you probably want to bind with this value set that way.