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[Sticky] FrSky DHT 2.4ghz DIY Module  

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Cliff
(@cliff)
Admin Admin

frsky dht diy module FrSky DHT DIY Module 540x400

FrSky DHT Internal DIY Module

- is also known as the 'Hack' Module - and provides a superb method of using the FrSky 2.4G system with any make of transmitter.

SPECIFICATION

  • Dimensions: 55x34x8mm
  • Resolution: 3072 (>11bit)
  • Operating Voltage Range: 6.0V-13.0V
  • Operating Current: 50mA
  • Output Power: 60mW
  • Firmware Upgradable

Receiver Compatibility

Compatible with V8 receivers:

  • V8R4
  • V8R7-HV
  • V8R7-SP
  • V8FR-HV

Compatible with D8 receivers:

  • D4FR
  • D4R-II
  • D6FR
  • D8R
  • D8R-II
  • D8R-II plus
  • D8RSP
  • D8RXP

All files relating to the DHT module including manuals and firmware updates can be found here 

DHT (toggle switch)

This topic was modified 7 months ago by Cliff
This topic was modified 6 months ago by Cliff
Quote
Posted : 11/04/2019 11:01 am
Topic Tags
B. J.
(@speedblade)
Active Member

When about are we to see the, long overdue, XHT module? 🤔 

Because the DHT cannot be upgraded with EU-LBT firmware (why not exactly?), the use of these modules, bought after the cut off date is illegal now. 😥 

There are still thousands of vintage RC TX out there, waiting to be converted to 2.4 GHz.

And not to forget, those that are crafting their own TX, because for some applications no commercially available gear will meet the needs of several special interest groups.

The latter were always well catered for by FrSky, but seem to be neglected today.

This post was modified 4 months ago 2 times by B. J.
ReplyQuote
Posted : 05/07/2019 8:10 pm
Rich bago
(@richbago)
Member

Frsky no plans to bring out a hack for the XJT module, but you can still Hack the XJT with a little work removing it from the case, heat shrink the pcb and add a toggle switch to the wiring

ReplyQuote
Posted : 09/07/2019 2:48 pm
B. J.
(@speedblade)
Active Member
Posted by: Rich bago

Frsky no plans to bring out a hack for the XJT module, but you can still Hack the XJT with a little work removing it from the case, heat shrink the pcb and add a toggle switch to the wiring

Question is, would using it that way still be legal?

To me it would, but no authorities are interested in my opinion.

Mind you, DHT isn't legal anymore, but still available in Europe to this day.

And why exactly is FrSky not working on a follow up for the DHT?

 

ReplyQuote
Posted : 10/07/2019 9:55 pm
Cliff
(@cliff)
Admin Admin

I believe that it would be legal but I am no expert.

I think the reason the Frsky are not doing any more with this is that they are moving on to the new Access system which, from what I have seen is excellent.  I have one o the X-9 lite units with Access on and must say that for the price £66, it is a fantastic unit.  As I say I really think that this is why they have left the XHT behind.

ReplyQuote
Posted : 16/07/2019 7:59 am
B. J.
(@speedblade)
Active Member
Posted by: @cliff

I believe that it would be legal but I am no expert.

I think the reason the Frsky are not doing any more with this is that they are moving on to the new Access system which, from what I have seen is excellent.  I have one o the X-9 lite units with Access on and must say that for the price £66, it is a fantastic unit.  As I say I really think that this is why they have left the XHT behind.

And why would you believe it to be legal? Just being curious.

But considering both DHT and a revamped XJT not allowed anymore in Europe, then what else would be a FrSky DIY option?

What I'm fearing is that FrSky never understood the utmost importance of backward compatibility.

Thereby alienating their most loyal followers that have been with them since day 1.

I recognize the advantage of the D8 protocol over the V8 (signal level, battery voltage alarms) , but anything beyond doesn't really represent a 'must have' factor to me.

A thing like this X-9 lite you mentioned is not helping either. If at least it would look like a real transmitter, it would create some curiousity, but now it's more like some accessory to children's computer games.

 

 

 

This post was modified 3 months ago by B. J.
ReplyQuote
Posted : 31/07/2019 9:37 pm
Cliff
(@cliff)
Admin Admin

I think you are confusing the Tarnis X9 lite with  the Taranis X lite The Xlite series does indeed look like a game controller.

I agree with you that the backward compatability is not good!  I think they are concentrating far too much on the new products and not enough on those that have been with them as you say since day 1.  I am one of those!  The Chinese are a strange breed and tend not to listen to us very much.  

As for the legality, I don't know either way!  Also things may change once we leave the EU.  To coin a phrase,  (take back control)!  will that be "radio control" I wonder.

ReplyQuote
Posted : 31/07/2019 9:58 pm
B. J.
(@speedblade)
Active Member
Posted by: @cliff

I think you are confusing the Tarnis X9 lite with  the Taranis X lite The Xlite series does indeed look like a game controller.

I agree with you that the backward compatability is not good!  I think they are concentrating far too much on the new products and not enough on those that have been with them as you say since day 1.  I am one of those!  The Chinese are a strange breed and tend not to listen to us very much.  

As for the legality, I don't know either way!  Also things may change once we leave the EU.  To coin a phrase,  (take back control)!  will that be "radio control" I wonder.

Yes, I've seen the X9 now, and indeed, that doesn't look half bad.  You were spot on there... 👍 

-----------------------------------------------------------------------------------

As for legality, in the 1960-ies my first, home built, 27MHz TX was officially tested, hence I got a permit.

Nowadays it's something with conformity (sp.?) and nowhere to bring your finished product for testing and approval. It's because of the overall laziness of authorities that we have lost that possibility. All we have left is inconsiderate bureaucracy. That is why I (and a great many others) depend on devices like the DHT. And that is gone now.....

--------------------------------------------------------------------------------------

About about listening to us:

Look here: https://www.frsky-rc.com/product-category/tx-modules

DHT...  discontinued. 😲 

It used to be the only reliable TX module that was useful for retrofits and new projects. 😪 

Talking about left abandoned.... 😠 

Of course I send a mail to sales4tech@gmail.com and surprisingly got an answer (in the past I never got any replies, either direct or through vendor topics on RC Forums).

Hello,

I just noticed from this page ( https://www.frsky-rc.com/discontinued/tx-modules/d-series ) your DHT module has been discontinued.

From many brands, it used to be the only good, reliable transmitter module for DIY projects, so what has become the direct FrSky replacement now?

Because on the page, mentioned above, I read: 'Although these products will no longer be produced, they will always be replaced by a better version'

This makes me curious to what this better version is supposed to be as I haven't found any on your web site so far.

I'd like to mention that I'm available for beta testing this new product.

Kind regards,

Reply:

Van: FrSky RC [mailto:sales4tech@gmail.com]
Verzonden: dinsdag 27 augustus 2019 2:25
Aan: f2b
Onderwerp: Re: DHT Module

Hi Friend,

Thanks contact us, the DHT module has been discontinued, I don't get news about the new replacement product, please pay attention to our website.

Best regards

Ray.

----

sales4tech@gmail.com 

Mobile:051085187718 ext 8024

E-Mail:longxiang.xu@frsky-rc.com

Not even a hint of a serious reply, just the usual commercial blah blah, so I responded:

Hi Ray (Xu?),

Thank you for your quick answer.

Yet, it leaves me where I was: in the dark.

Not only me, but those thousands of 'Vintage Revivalists' that have been using FrSky products for reviving vintage RC gear as well.

Would you please pass my question to those in charge of taking these strange decisions (like discontinuing something before a proper replacement is available)?

I'm really missing the FrSky from the beginning, where there were extensive 1:1 contacts with their customers, beta testers, etc.

From where I am, it looks as if FrSky has, from a company that listens to their customers, gone the way of Futaba and JR, in 'deciding what the customers are getting, regardless of their real needs'.

Hoping I'll be proven wrong on this.

Kind Regards,

-----------------------------------------------

Of course total silence after this...

What more can I say?

Anyone similar experiences?

 

ReplyQuote
Posted : 29/08/2019 8:11 pm
B. J.
(@speedblade)
Active Member

Can maybe the administrator explain, why FrSky China doesn't repond to questions from their customers?

Whereas in the beginning they were very communicative.

ReplyQuote
Posted : 02/10/2019 8:12 am
Cliff
(@cliff)
Admin Admin
Posted by: @speedblade

Can maybe the administrator explain, why FrSky China doesn't repond to questions from their customers?

Whereas in the beginning they were very communicative.

It is down to us dealers to respond now.

ReplyQuote
Posted : 13/10/2019 10:31 am
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