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Devo7e work
- vlad_vy
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- RandMental
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Walkera DEVO 7E 7-Ch 2.4Ghz Telemetry Function Radio System
User Id: skyes_rocFeedback: 257 | 99.5%
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Buy It Now $39.00 +$25.00 shipping
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- PhracturedBlue
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The CYRF6936 has a max output of 4dbM which Seems to correspond to the pre-antenna info listed on the FCC page for the 7e
The Devo10 docs show that value to be about 12dBm higher which sounds right given that they don't run the CYRF chip at full power in the Walkera firmware.
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- PhracturedBlue
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- Xermalk
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- PhracturedBlue
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I'm planning to take the diode off and replace with a shunt to see what happens, but no need to do that right at the moment.
Also note that there are all sorts of impedance matching issues to take into account. It is actually possible that shorting the diode will actually make reception worse. I'm assuming that won't be an issue though, since they use the same antenna for Rx
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- Xermalk
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What would happen if one heated the entire shield and then lifted it of,
or would the heat damage something?
Im guessing the V911 flysky module would have no issues with 100/150 mW though?
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- PhracturedBlue
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- PhracturedBlue
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- quique65
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I've just successfully tested your last commit with a SUPERFP and power output at 100mW. No disconnection on flight. I can't check the range because I'm flying at home but I suppose that is similar to the original, so I hope it's ok for small helis.
I have an older WK-2402 TX. Do you think that would be possible to use their module on the 7E?. I've attached the FCC ID document with internal photos.
Thanks in advance for your opinion.
Regards,
Enrique.
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- FDR
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The WK-2402 is 10mW and has no amp at all, neither it has telemetry...
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- PhracturedBlue
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'100mW' in Deviation will give you ~1.5mW power actual
'150mW' in Deviation will give you ~7mW power actual
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- Xermalk
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Mind making a Guesstimate on how long the range would be on a Master CP with 7 mW?
Anyway, im guessing this is what we would need to upgrade the range?
www.ehirobo.com/shop/product_info.php?products_id=11530
Edit: Hrm, only 7 solder points on the 7E Module? the 8s one seems to have 10
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- PhracturedBlue
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Yes that 8S module is the one you'd need. You only need 7 pins to hook up the 8S module.
The pins are:
Power, Ground, MISO, MOSI, SCK, CS, RESET (though I don't know the order on the 7e off the top of my head)
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- sbstnp
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www.hobbyking.com/hobbyking/store/__1666...r_antenna_15_cm.html
I have 4 of them on the way, but it'll be another week or so before they arrive so I don't know for sure.
Devo 10 + 4in1
FrSky Taranis + TBS Crossfire
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- Xermalk
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sbstnp wrote: I think this antenna could be compatible with the Devo 8S module socket:
www.hobbyking.com/hobbyking/store/__1666...r_antenna_15_cm.html
I have 4 of them on the way, but it'll be another week or so before they arrive so I don't know for sure.
Hrm i have a few 2.4 ghz antennas left over from routers and usb adapters, one of them should have a proper connector. Actually, that connector looks exactly like the ones used in every single laptop wifi module. i can likely steal one of those from a old decommissioned laptop.
Edit, BTW Pb could you take a photo of the soldering points with a ruler next to them. Id like to get a feel for the scale.
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- SadSack
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it's same product as www.zeph.com/lowmelt.htm without industry pricing! Sure in US there's something like it at your local hobby shop.
Works well at removing 100 pin mcus . Just need to use more flux and clean it all off after, flux/solder braid. If you don't have braid you could use old usb lead strip it you'll see what i mean or coax has better copper braid but mostly on old stock if you have any.
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- quique65
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PhracturedBlue wrote: Inside the house, '100mW' is probably fine. outside I would use '150mW'
'100mW' in Deviation will give you ~1.5mW power actual
'150mW' in Deviation will give you ~7mW power actual
Ok, changed to 150mW. Thanks.
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- quique65
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FDR wrote: Not likely.
The WK-2402 is 10mW and has no amp at all, neither it has telemetry...
Thank you. Ordering a 8S module...
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- RoGuE_StreaK
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www.rcgroups.com/forums/showpost.php?p=21025317&postcount=73
www.rcgroups.com/forums/showpost.php?p=21194370&postcount=214
PB, any pics of how the antenna cable is connected? I kinda like the cute little stubbytenna, but would be interesting to see if we can come up with a standard swap-out method that is doable by anyone with basic skills.
"Ideally", I'd like to be able to swap antennas depending on how much range is required, and how portable I want it to be. Seems most cheap antennas on ebay, and spare ones from routers etc., use an "RP-SMA" screw in connector, would be cool to have one of these fitted in the antenna location that you can swap-in whichever antenna you want?
eg.
$1.30 for an IPX to RP-SMA adaptor (if plug on board rather than solder)
http://www.ebay.com.au/itm/190766782598
$1.80 for a 7dbi antenna
http://www.ebay.com.au/itm/180424715087
$2.50 for a 16dbi megatenna
http://www.ebay.com.au/itm/251211302498
~$4 for a 2.15dbi stubbytenna
http://www.ebay.com.au/itm/300554009601
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