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Spektrum module for Taranis

An electronic project

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Phil Green28/11/2014 21:49:23
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Posted by Chris Bott - Moderator on 28/11/2014 20:38:48:

There is another commercial option. The Spektrum DM9 (DSM2 only) module. If you can get one.
However I expect that this too only takes the PPM signal, so some features of using the self build module are lost.

That's right Chris, the DM9 is just a dumb ppm module so would not integrate any differently to an OrangeRx module.

Further the DM9 has timing quirks which means the PPM pulse widths have to be changed to 400uS on the Taranis. This is a peculiarity of the DM9, in any other system the pulse width doesn't matter a jot, and shouldn't according to accepted ppm spec. The 'Gem' in my avatar is a DM9, I had loads of fun getting the channel timings right. Not!

Cheers
Phil

Phil Green29/11/2014 10:03:18
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There is a PCB available to make the construction easier:

**LINK**

Chris Bott - Moderator29/11/2014 12:44:54
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Wow would you look at that. Thanks Phil, I hadn't seen that, how easy would that make it?

There's even a design for a 3D pinted case.

Chris Bott - Moderator01/12/2014 15:56:06
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I see there's now even a "how to" video to go with the pre made PCB's

WolstonFlyer15/12/2014 23:05:11
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I just ordered 3 boards from OSH park and got an email saying expected manufacture is 17th Dec give or take a day depending on the rest of the production panel being filled with other projects.

I have also ordered the Spektrum Airwave case and that will be the expensive part of the project.

I will order the other components tomorrow and everything might arrive in time for a bit of an over Christmas electronics project!
Kevin Fairgrieve08/04/2015 11:14:33
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How did you get on with your build Wolston Flyer?

I have sourced my board, module and case.

dscf0371.jpg

Looking around for the components is a bit of a nightmare. If you use the ones suggested by John Prikkle, they come to about £3. Postage on top of that is a whopping great £12.

Has any one been able to source the components at a cheaper price?

Kev

Edited By Kevin Fairgrieve on 08/04/2015 11:15:08

Phil Green08/04/2015 11:38:30
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Posted by Kevin Fairgrieve on 08/04/2015 11:14:33:

Looking around for the components is a bit of a nightmare. If you use the ones suggested by John Prikkle, they come to about £3. Postage on top of that is a whopping great £12.

Other than the actual Spektrum module, there are no unusual components in Johns list Kevin, theres no reason to order from outside the UK - theyre readily available from any of the electronics suppliers like farnell, rs, rapid etc - hardly a 'nightmare' smiley

Ç

Masher08/04/2015 11:48:20
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Just to jump in on this thread, I too have recently taken delivery of 3 PCB's and sourced a donor DX5E from a club member.

Need to sort case (have one of the T9Hobby ones on it's way, not sure if it's any good but it's cheap)

Haven't bothered about components yet, as Phil says, they are common (like me!)

I have only just taken the plunge with my Taranis actually using it on "real" models - just like the majority, I am totally hooked and love the general feel and performance. This will now be enhanced, I think, by adding one of these modules to allow continued use of some Spektrum receivers

I suppose we can't do any bulk purchase of components because it's the P+P that wrecks it all

PS very impressed with OSH Park PCB service - very efficient, will use them for my own designs in future

 

Edited By Masher on 08/04/2015 11:50:50

WolstonFlyer08/04/2015 12:01:16
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Hi Kev

I got all of the parts but have not actually soldered them together yet sad I must get on with things!

I used the component links on the blog and ordered enough for three complete boards from Mouser, they were delivered from the USA in a couple of days, a bit expensive but at least I know I got the right components!

This is what I ordered..

dsmx-parts1.jpg

dsmx-parts2.jpg

Kevin Fairgrieve08/04/2015 12:08:22
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Posted by Phil Green on 08/04/2015 11:38:30:
Posted by Kevin Fairgrieve on 08/04/2015 11:14:33:

Looking around for the components is a bit of a nightmare. If you use the ones suggested by John Prikkle, they come to about £3. Postage on top of that is a whopping great £12.

Other than the actual Spektrum module, there are no unusual components in Johns list Kevin, theres no reason to order from outside the UK - theyre readily available from any of the electronics suppliers like farnell, rs, rapid etc - hardly a 'nightmare' smiley

Ç

Indeed I have most of the components in stock. What I was alluding to was the postage. Why should a few small components that could be sent out in a small Jiffy Bag cost so much to post?

The £12.00 quoted was from the Mauser UK site.

Sorry should have said it was the postage that was the nightmare.

Kev

Martin Whybrow08/04/2015 12:46:22
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Posted by Kevin Fairgrieve on 08/04/2015 12:08:22:

Indeed I have most of the components in stock. What I was alluding to was the postage. Why should a few small components that could be sent out in a small Jiffy Bag cost so much to post?

The £12.00 quoted was from the Mauser UK site.

Sorry should have said it was the postage that was the nightmare.

Kev

Kev, it's because you're ordering them from the USA; Mouser's UK website is just that, the company you're dealing with are still in America.

I could easily find half a dozen UK suppliers for those parts, they're all run of the mill items.

Mike Blandford08/04/2015 17:16:23
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For information, I've been working with a company developing a new, telemetry capable, DSM Tx module. I test flew with both the module and their telemetry unit yesterday with no problems.

I have support for this module working in a 9X Tx with the SKY upgrade board, the 9XR-PRO and the Taranis, all running the ersky9x open source firmware. It should be possible to support this module in openTx firmware.

At present the timescale to the availability of this module to purchase is unknown.

Mike.

Masher08/04/2015 17:30:07
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Well if it's DSMX Mike, I would think you are on to a winner there. If it's DSM only then perhaps not.

Mike Blandford08/04/2015 18:28:43
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It supports both DSM2 and DSMX.

I've just been testing it and doing the support firmware for the radios, they have developed the module and its firmware.

My test flight yesterday was with a Lemon stabiliser Rx.

Mike.

Martin Rowe 108/04/2015 19:46:50
119 forum posts

Warning!

I have a orange slot in TX for my taranis. I have used it once. I lost all control of my carbon z cub. My pride and joy.

i have binned the orange unit and put a x8r in the repaired cub. Simple put I don't trust the unit. I would only use it if I were completely happy to loose control. Maybe a vapour indoor.

just my view though

Frank Skilbeck09/04/2015 08:06:35
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Posted by Mike Blandford on 08/04/2015 18:28:43:

It supports both DSM2 and DSMX.

I've just been testing it and doing the support firmware for the radios, they have developed the module and its firmware.

My test flight yesterday was with a Lemon stabiliser Rx.

Mike.

But DSM2 is not compliant with the latest EU 2.4 standard, so it wouldn't be able to be certified for use in the EU.

Phil Green09/04/2015 08:43:28
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Posted by Martin Rowe 1 on 08/04/2015 19:46:50:

Warning!

I have a orange slot in TX for my taranis. I have used it once. I lost all control of my carbon z cub. M

i have binned the orange unit and put a x8r in the repaired cub. Simply put I don't trust the unit.

just my view though

on the other hand, taking a balanced view, many thousands of these are in use without any problems at all.
Its particularly popular with the retro-RC lads for converting really old radios to modern spec.
Cheers
Phil

Jim Mchugh13/04/2015 11:22:43
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Chris,

Sorry to resurrect an old thread, but where did you get your DX5e module from?

I fancy making one of these modules also, as that would let me bind to various Hobbyking (amongst other) BNF models.

Cheers!

Phil Green13/04/2015 11:54:48
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DX5e and DX4e's come up on ebay from time to time, usually because they were bundled with some sim or heli package. This one for example. I bought a new, unused DX5e for £15.
If you want DSMX as well as DSM2 make sure you're buying a later module.

Wait for a cheap one as you're throwing most of it away!

 

 

Edited By Phil Green on 13/04/2015 11:58:38

Chris Bott - Moderator13/04/2015 12:03:00
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Hi Jim. Phil has pretty much typed what I would have. Thanks Phil thumbs up

Yep, Dx4e and Dx5e both have the same 6ch Tx module in them.

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