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12-20-2019 12:50 PM  11 months ago
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Evolusia

rrApprentice

UK

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3GX
Hi. I know this is old technology and I should get something else etc. etc. but can anyone give me a heads up on how long it should take for this gyro to initialise and the led's to illuminate after power up. The one I have takes ten seconds. Just wondering.
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12-20-2019 02:40 PM  11 months ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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3GX gyro is a good FBL gyro, no matter New tecnology today.

But... 3GX as a receiver is another matter.

You are taking about what?

Your gyro 3GX or your receiver inside 3GX?

This gyro inicialize very quick... No more than 5 secs.

Another history could be the spektrum thing inside related to the receiver.

/
Saludos cordiales,
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12-20-2019 03:02 PM  11 months ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Spektrum thing inside 3GX...

Check your satellite... DSM2 works fine.

DSMX works if you upgrade the software inside... I don't recomend such a procedure.
The way that are written this software is Wrong and could damage your 3GX.

If your 3GX is ver. 4, DSMX should work fine.

Aja, tell us...
What versión software your 3GX is?
Are you using DSMX satellite?

/
Saludos cordiales,
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12-20-2019 07:56 PM  11 months ago
Evolusia

rrApprentice

UK

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Hi, I temporarily bound a dsmx sat to this unit so that I could update the firmware to v5.0 which it did no problem. It's reporting V5.0 in the 3GX software prog so I guess the update is ok. However most videos I have seen show the 3GX coming on more or less straight away when it's powered up but with this one the DSMX sat lights up immediately and the the gyro then takes a further 9-10 secs for its leds to illuminate. I havent had chance to test if the 3GX is actually working but I can't see any reason why it shouldn't. I'm just wondering about the boot time.
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12-20-2019 08:01 PM  11 months ago
Evolusia

rrApprentice

UK

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12-21-2019 12:22 PM  11 months ago
Rojoalfa

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Very Dangerous thing you do with the upgrade.

My 3GX is original and works fine! No software upgrade.

In the past, I broked two 3GX because of bad software... So, no more...

My PC is one thing.
My RC helis is another thing.

This two worlds don't mess with each other.

/
Saludos cordiales,
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12-22-2019 04:27 AM  11 months ago
dkshema

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Cedar Rapids, IA

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For the record, the 3GX unit by itself has no receiver built in. Receivers are connected to the 3GX.

Upgrading the 3GX firmware is not dangerous, nor is it scary or problematic.

It is not only safe and easy to do, but upgrading to V5.0 is highly recommended to get the best performance out of the unit.

At one time, I had 13 3GX gyros installed and flying with no problems. My early ones started with V1.0 firmware. They ALL were eventually upgraded to the "newest" version, V5.0. V5.0 is by far the best version of firmware the 3GX could have.

The firmware upgrade is simple, easy, and nothing to be afraid of.

I still have some of those gyros still flying. The only trick to setting them up is in how you adjust the tail rotor on your heli after installing V5.0.

The 3GX was not capable of taking advantage of DSMx protocol in Spektrum systems until V4.0 firmware was released. The receivers would work fine, but would bind and operate in DSM2 mode.

With the V4.0 and V5.0 firmware, you can use DSMx receivers, and bind them in DSMx mode and again, they will work fine. However, when you bind your receivers with V4.0 and V5.0, there is a different set of steps at application of power, that tells the system to bind in DSM2 or DSMx mode. If you don't follow the correct procedure, you'll end up binding in DSM2 mode and not DSMx. Of course, only DSMx receivers can be bound in DSMx mode.

Also, if you are using two satellite receivers with your 3GX, they both must be either DSM2 or DSMx receivers. NEVER mix DSM2 and DSMx satellites in a system.

I will dig through some of my earlier posts about 3GX V5.0 and how to adjust your tail rotor linkage for best operation and put some links in this thread.

-----

This post tells you how to upgrade, and what to do if you "brick" the 3GX....how to restore it to operation and get V5.0 installed:

https://rc.runryder.com/p6387943/

-----

Adjusting tail rotor linkage using V4.0 or V5.0 firmware:

To adjust your tail rotor setup after installing V5.0, use your gyro gain select function to make the gyro run the tail servo in "normal" mode (NOT heading hold mode). Bring the helicopter to a hover, note which way the nose wants to turn. Land and adjust the tail rotor linkage until the helicopter will hover without the nose yawing left or right. You will want to go back and redo the left and right travel limits after adjusting the linakge to prevent the servo from stalling at either travel endpoint.

Then switch back to heading hold mode and enjoy.

Binding in DSMx mode:

DSMx is a snap with the 3GX and satellites as long as your TX and satellites support DSMx, and ONLY if you are programmed with 3GX V4.0 or V5.0 software. If you are using any software prior to V4.0, the unit won't support DSMx.

To bind in DSMX mode you insert the bind plug into the lower right horizontal socket in the connector block then hold down the little black button on the 3GX WHILE you turn on power to the 3GX. You can let go of the button after you apply power.

To bind in DSM2 mode, do NOT press the button on top of the 3GX unit when you apply power.

How and when you remove the bind plug will determine the kind of failsafe you will have (servos will hold last known position or go to preset positions).

Feed the 3GX good clean power of at least 6 volts and it will treat you right.

That last point is extremely important. Good, solid input voltage of at least 6 volts, with sufficient current capacity and adequate wire gauge is required.

-----

Just about everything you need to know about 3GX setup:

https://rc.runryder.com/p6407852/
-----
Dave

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

Team Heliproz
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