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Finding a source for CYRF6936 transceivers
- PhracturedBlue
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I have my old non-telemetry Devo module, so I will likely use that for myself, but that isn't exactly a suitable solution for others. My understanding is that Walkera no longer sells the telemetry module, and I've never seen modules for sail like the cc2500, a7105, or nrf modules on ebay.
One possibility I was thinking of is programming a Rx to work as a Tx if we could find one with a PA.
I checked my:
DSMX AR6210: No Pa (unsurprising)
DSMX TM1100: No obvious PA (kind of surprising)
Walkera 2602: No PA (unsurprising)
Devo RX1202: Same PA as Devo Tx board
The RX1202 has an Atmel processor, so we could probably write a custom firmware to convert it to a Tx module (or maybe even bypass the Atmel altogether). But now I am trying to recall whether the 1202 has any telemetry feedback. If not, the board may be wired for Rx only. I'll spend some more time looking at it to see how the PA is wired (like the 7e) or it may not have a multiplexer on the data line.
The RX1202 is pretty pricey to hack up this way though. An RX601 would be the cheapest Devo compatible Rx I've seen, but I don't know if the circuitry is similar. Does anyone have one?
A magic cube would be another option to investigate, though converting one to an internal module seems kinda wasteful.
An orange TX module would be another option to look into.
Are there any other ideas where to get a compatible module?
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- sbstnp
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Devo 10 + 4in1
FrSky Taranis + TBS Crossfire
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- SadSack
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They still have some when I made my order, 27 Oct 2013. And showing stock.
Not sure if any good... but free shipping orders over $450
1bitsquared.com/products/superbit-cyrf-module
Nothing to do with this but worth a look.... 1bitsquared.com/collections/frontpage/products/lisa-s
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- FDR
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www.ehirobo.com/shop/p11530/WALKERA-(WK-...le/product_info.html
Hobbyone has them too:
www.hobbyone.com.hk/cn/product.jsp?id=10896
About the other options:
- no standard receivers do telemetry, so probably the PA only wired as a preamp;
- the telemetry module should have it, but it is expensive;
- the magic cube doesn't have a PA...
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- victzh
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I never bought from them so I can't vouch, but the price is reasonable, and it should have PA.
Regarding the CC2500 module on Taranis - as I mentioned in another thread, it is probably intelligent module with protocol implementation embedded in it. I have not seen FrSky protocol code in their codebase, and there are two crystals on the RF board - one for CC2500, one for the MCU on board. So we need a source for reasonable CC2500 modules as well
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- FDR
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It's an old one, and it is from the same seller ehirobo, which has a few different names...victzh wrote: If you just search for WK-DEVO-S-MOD, you'll find there are places with "discount" price of $9.99, e.g. www.hobby-usa.com/newsletter/120201.html
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- SeByDocKy
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victzh wrote: If you just search for WK-DEVO-S-MOD, you'll find there are places with "discount" price of $9.99, e.g. www.hobby-usa.com/newsletter/120201.html
I never bought from them so I can't vouch, but the price is reasonable, and it should have PA.
Regarding the CC2500 module on Taranis - as I mentioned in another thread, it is probably intelligent module with protocol implementation embedded in it. I have not seen FrSky protocol code in their codebase, and there are two crystals on the RF board - one for CC2500, one for the MCU on board. So we need a source for reasonable CC2500 modules as well
Stupid question, Can be installed in the devo7E to avoid to do the diode mod ?
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- Hexperience
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There are 10 types of people in this world. Those that understand binary and those that don't.
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- victzh
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So, my prediction - don't expect it this year.
Also, I would like to ask about physical dimensions of your Devo12 - is it like Devo10? Do you have photo of insides?
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- PhracturedBlue
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It is really a nice Tx though. There are several pics of the inside here:
www.rcgroups.com/forums/thumbgallery.php...471&do=threadgallery
As victzh said, the protocol work for Frsky is done. the problem is it doesn't work, and I haven't been able to figure out why.
Frsky Rx run ~$20 from China:
www.hobbyking.com/hobbyking/store/__402_...Ghz_FrSky_ACCST.html
I have an old-protocol V8R and a new protocol D6FR that I used for protocol analysis. Also one of the DHT DIY kits for the Tx. I think I tried running just the PA without the LNA when I was wokring on it, but I can't remember for sure.
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- Daryoon
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Just tap into the PPM line.
An intermediate solution until native FrSky is supported by Deviation.
p.s. The Devo 12 screen size makes it look like a "modern" radio.
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- SadSack
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Ps for Devo7e LOL
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- victzh
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- Hexperience
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Daryoon wrote: My question is...why can't the FrSky guys just solder in the DIY FrSky module. Like how one would do it on the Turnigy 9x?
Just tap into the PPM line.
An intermediate solution until native FrSky is supported by Deviation.
p.s. The Devo 12 screen size makes it look like a "modern" radio.
The devo12 runs off of a 1s battery and the diy needs 6v. So you need to add a 2s battery as well.
More importantly, I'm hoping that all I'll need to add is a proper small module and we'll get telemetry just like we get with the devo RX's but without having to buy the ~$50 telemetry unit. Nice all in one, clean, solution.
Hey, if it never happens, that's ok... as time goes by I'm slowing buying more Devo RX's and telemetry modules anyway.
There are 10 types of people in this world. Those that understand binary and those that don't.
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- blackmoon
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Artaflex module at digikey 25$Try the Artaflex AWP24S available at Digikey. It's based on the CYRF7936 chip but has the exact same register set as the CYRF6936. Anything written for the 6936 should work fine on it but it costs a little more more than the Leto-M.
There is also the Unigen Leto module.
Some info about those two modules
Could not find the Leto anywhere btw.
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- RW9UAO
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and oure loving CYRF + megaAVR.
call me at evening and i look inside him again.
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- FDR
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- RW9UAO
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ATmega86
CYRF6936
RDAT212 used as LNA only. FDR, you right.
why not use this module:
www.miracle-mart.com/store/index.php?mai...nfo&products_id=8405
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- FDR
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I've got one spare waiting for the universal module...
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- victzh
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RW9UAO wrote: why not use this module:
www.miracle-mart.com/store/index.php?mai...nfo&products_id=8405
Because it's out of stock?
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