Taranis and DSM2 mods

Post by **Kilrah** » Mon Mar 17, 2014 2:50 pm

The main circuitry difference is that they went from a linear voltage regulator to a switching mode one.

Hawk600 · Post by **Hawk600** » Mon Mar 17, 2014 2:54 pm

Thank you Daedalus66, I already have the orange tx antenna problem solved using a DM9 case cover and a servo case as pictured.
As far as firmware update I am in US and HK only has the programmer in China and takes like 40 days to get here, I might give it a try but they are out of stock as of now so it will take even longer.
In regards to the BEC is is also out of stock in the Global warehouse and US warehouse as well so I wont have a lot of options right now plus I rate when HK makes you pay for shipping twice not letting you combine warehouse purchases.
Ideally I would not like to cannibalize my second "defective"orange TX but if is going to cost me some extra money and have to wait a long time I rather cannibalize my "bad" orange module.
As far as failsafe goes, I do not mind not having it, but model match is something that I miss.

Thank you Kilrah, do you know if would this circuitry change makes any difference while using the DX5e rf unit?

KAL · Post by **KAL** » Mon Mar 17, 2014 4:51 pm

@Hawk600

If you have a USBtoTTL adapter with Prolific PL2303 chip you need only a schottky diode to update the orange TX.
I've done it in the following way a few minutes ago:

: USB2TTL.png (7.55 KiB) Viewed 18037 times

The firmware and howto can be downloaded at HK (files tab on the product page).

Klaus

Post by **jhsa** » Mon Mar 17, 2014 4:58 pm

which software do you use to flash it, and what chip did you choose?

Thanks

Hawk600 · Post by **Hawk600** » Mon Mar 17, 2014 5:03 pm

Thank you Klaus!
I have a prolific adapter that I was using to transfer data from an old magellan gps but as far as I recall it is USB to serial so I dont think is going to work

Hawk600 · Post by **Hawk600** » Mon Mar 17, 2014 5:11 pm

I found those on ebay:

http://www.ebay.com/itm/PL2303HX-USB-To ... 5401c58e43

without cables: http://www.ebay.com/itm/PL2303HX-USB-To ... 2585dc26a1

Do you think they will work?
It will be great if I can do that without waiting 40+ days...also +1 on jhsa question.
Thank you!

KAL · Post by **KAL** » Mon Mar 17, 2014 5:19 pm

@Joao: I used the software that is provided by HK, no chip to select.

@Hawk600: If it's RS232 level then it won't work so easy. You then need to invert the signals and convert them to 5V level.
Those adapters you pointed to are exactly the same as mine.

(click on the files tab) or download the attachments

Post by **jhsa** » Mon Mar 17, 2014 5:25 pm

Can a FTDI be used? providing that we use the diode?

KAL · Post by **KAL** » Mon Mar 17, 2014 5:33 pm

Unfortunately the provided software does not recognize a FTDI device.
Works only with PL2303.

Diode is needed because of the one-wire-bus.

Hawk600 · Post by **Hawk600** » Mon Mar 17, 2014 6:01 pm

KAL wrote:@Joao: I used the software that is provided by HK, no chip to select.
@Hawk600: If it's RS232 level then it won't work so easy. You then need to invert the signals and convert them to 5V level.
Those adapters you pointed to are exactly the same as mine.
(click on the files tab) or download the attachments

Awesome Kal, thank you specially for attaching the files! I will buy one of these adapters and try the update.

Hawk600 · Post by **Hawk600** » Mon Mar 17, 2014 6:14 pm

So Kal just makeing sure I understood it correctly, your adapter is RS232 level like the ones i linked first and I would need the diode following the USB2TTL.png picture you first posted.
Would an adapter like this one that doesnt look to be RS232 work better maybe?
http://www.ebay.com/itm/New-PL2303HX-US ... 3cd40ab9a9
Thank you again!

KAL · Post by **KAL** » Mon Mar 17, 2014 7:29 pm

All three adapters should work fine. As said before, the first 2 adapters are equal to that I used.

Many serial TTL-Adapters are named as RS232, but RS232 means voltages between -15V (logical "1") and +15V (logical "0").
TTL on the other hand means voltages between 0V ("0") and 5V ("1"). So when it's TTL it's not RS232.

What we need is USB to TTL serial adapter.
The diode is needed to be able to send and receive on one wire.

Klaus

Daedalus66 · Post by **Daedalus66** » Mon Mar 17, 2014 8:23 pm

Hawk600 wrote: As far as failsafe goes, I do not mind not having it, but model match is something that I miss.

You're missing the point on failsafe. As I said, it's a function of the receiver not the transmitter (by definition, as it only kicks in when the receiver is not getting a signal). A DSM receiver automatically has failsafe, whether you want it or not. In the basic form, just the throttle channel (CH1) will go to the position at time of bind.

Some types of receiver (including some DSM) can be set to preset positions for all channels, while some can be set to output no signal to servos on loss of input signal.

xnaron · Post by **xnaron** » Wed Jul 02, 2014 1:55 am

I built the DIY module using the dx5e module. It is working great and I have about 10 flights on it. What is the maximum amount of channels the dx5e module can output? I'm looking at getting some of the lemonrx recievers but the ones I am interested in are 7 channels.

thanks,
Brendin

pmullen503 · Post by **pmullen503** » Wed Jul 02, 2014 4:35 pm

xnaron wrote:I built the DIY module using the dx5e module. It is working great and I have about 10 flights on it. What is the maximum amount of channels the dx5e module can output? I'm looking at getting some of the lemonrx recievers but the ones I am interested in are 7 channels.

thanks,
Brendin

Only 6. But the LemonRX 6 ch receivers work great.

Daedalus66 · Post by **Daedalus66** » Wed Jul 02, 2014 7:56 pm

The module used by the DX4e, DX5e and D6i can handle only 6 channels.

A 7-channel receiver will work with a 6-channel transmitter (but of course will only output the first six channels).

Are you thinking of the Lemon gyro stabilized receiver? The new V3 version will work fine (except for in flight gain, which is on channel 8).

xnaron · Post by **xnaron** » Thu Jul 03, 2014 9:05 pm

Daedalus66 wrote:The module used by the DX4e, DX5e and D6i can handle only 6 channels.

A 7-channel receiver will work with a 6-channel transmitter (but of course will only output the first six channels).

Are you thinking of the Lemon gyro stabilized receiver? The new V3 version will work fine (except for in flight gain, which is on channel 8).

Yes that was the one I was thinking oh. I am glad to know it will work.

Thanks,
Brendin

einarak · Post by **einarak** » Wed Aug 27, 2014 2:56 pm

I did a DIY module with a MPL4DSM module, but It won´t bind to any receiver. After a little research I found something about that Spektrum had recently changed some codes for their small transmitter modules that are frequently being pulled for diy projects.
Have you experienced anything like this? Do you think is possible to modify the software to suit the updated versions of the low power dsm modules?

abobotek · Post by **abobotek** » Thu Sep 11, 2014 7:25 am

einarak wrote:I did a DIY module with a MPL4DSM module, but It won´t bind to any receiver. After a little research I found something about that Spektrum had recently changed some codes for their small transmitter modules that are frequently being pulled for diy projects.
Have you experienced anything like this? Do you think is possible to modify the software to suit the updated versions of the low power dsm modules?

I'm having this problem with newer OpenTx for Taranis images with my DIY DSM2 module. Works fine with opentx-taranis-haptic-en.2.0.7.bin. But when I flash with opentx-taranis-haptic-en.2.0.10 or opentx-taranis-haptic-en.2.0.11 it fails.

So try flashing an older version.

Post by **bertrand35** » Thu Sep 11, 2014 5:12 pm

Would you try to download again your firmware? We changed the compiler today.

AlexC · Post by **AlexC** » Thu Sep 11, 2014 10:15 pm

I have the same problem, external Spektrum module works fine in 2.08 and does not work on 2.011. I have downloaded the newest firmware

Post by **Kilrah** » Thu Sep 11, 2014 10:40 pm

At what time? It was updated today.

AlexC · Post by **AlexC** » Thu Sep 11, 2014 11:17 pm

2.011 Created ‎11 ‎September ‎2014, ‏‎23:01:02

einarak · Post by **einarak** » Fri Sep 12, 2014 12:47 am

Mine dsm2 module doesn´t work either on the 2.011 firmware. On start up and when bind mode is entered, the module blinks the led for a split second, then nothing happens. So it just looks like the transmitter newer turns on the module.

BustedWing · Post by **BustedWing** » Fri Sep 12, 2014 1:39 am

I didnt want to ask such a silly question here, but is there a way to retro-grade my firmware back to one that worked? I dont have any of the files existing, would need to download.

Post by **bertrand35** » Fri Sep 12, 2014 6:01 am

Would you check the nightly builds here, especially the 1st one and the last one and tell-me if they work?
http://jenkins.open-tx.org/nightly-20/

Post by **bertrand35** » Fri Sep 12, 2014 6:04 am

A user confirmed that it works now:
https://github.com/opentx/opentx/issues ... t-55364694
So you just need to re-download your Taranis firmware and flash again

Philipp · Post by **Philipp** » Fri Sep 12, 2014 7:16 am

I can confirm that the most recent 2.0.11 works, too. (opentx-taranis-lua-en.bin)
I did not try anything between 2.0.5 and 2.0.11 though.
For details please see attached picture.
Thank you very much for resolving this issue!

Philipp

AlexC · Post by **AlexC** » Fri Sep 12, 2014 10:50 am

External module now working with 2.011...Thanks.

einarak · Post by **einarak** » Sat Sep 13, 2014 12:08 am

Still not working, I´m starting to think its a hardware issue with my module build... :/

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Taranis and DSM2 mods

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