Devo 12s 3in1 / 4in1 RF module neat installation.

ajtank
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19 Oct 2016 15:55 #55154 by ajtank

Replied by ajtank on topic 3in1 / 4in1 RF module

raketemensch wrote:
epilot wrote: The module is available on Banggood now.

4in1 module

Is this the new drop-in module? If so, I guess it needs a little soldering on the 7e, but I haven't seen a guide for it yet. I'd love to pick this up, but I'm not sure if I'd be capable of installing it yet.

This module is mounted on a carrier board which is designed specifically for Devo 10. For Devo 7E you need to get the module without the carrier board

For 7E it seems the 3-in-1 is more appropriate.

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victzh
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19 Oct 2016 16:05 #55155 by victzh

Replied by victzh on topic 3in1 / 4in1 RF module

3-in-1 still has problems with protocols using receiving part of RF - either telemetry or with auto-acknowledge. Today 4-in-1 is the best module to install despite higher cost. Devo 10 specific module is also suitable for 7E, there are instructions for this here (thanks, HappyHarry) www.deviationtx.com/forum/how-to/5955-7e...-4in1?start=20#50816

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HappyHarry
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19 Oct 2016 16:08 #55156 by HappyHarry

Replied by HappyHarry on topic 3in1 / 4in1 RF module

ds864 wrote: Yes me too. The picture on the site looks like the Devo 10.
I've been looking at this ( www.hacksmods.com/category/devo/ ) to see how to do each module but the 4 in 1 sounds like a better move. I just need some step-by-step instructions for the Devo 7e if this is compatible?

Do you have to remove the existing module? Will this then have a better range than the stock module?

devo 4in1 fitting guide to the 7e is availabe here >> www.deviationtx.com/forum/how-to/5955-7e...he-devo-version-4in1

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vlad_vy
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19 Oct 2016 16:25 - 06 Mar 2017 06:04 #55157 by vlad_vy

Replied by vlad_vy on topic 3in1 / 4in1 RF module

Summary of module connections (3 wires) (Devo 6, Devo 7e, Devo 10, Devo 8, Devo F12E, Devo 12):

7105 = TMS pad (A13)
2500 = TCK pad (A14)
2401 = ???

4in1 module pinout

Devo6

2401 = C10

hardware.ini

;Only useful for transmitters with an after-market vibration motor
;enable-haptic=1
;
;switch_types: 3x2, 3x1, 2x2
;extra-switches=
;
[modules]
; there is no need to enable the cyrf6936 module unless
; it is wired to an alternate port. It is Enabled automatically otherwise
enable-cyrf6936 = B12
has_pa-cyrf6936 = 1
enable-a7105 = A13
has_pa-a7105 = 1
enable-cc2500 = A14
has_pa-cc2500 = 1
enable-nrf24l01 = C10
has_pa-nrf24l01 = 1
; enable-multimod = A13

Devo7e

2401 = A15

hardware.ini

;Only useful for transmitters with an after-market vibration motor
;enable-haptic=1
;
;switch_types: 3x2, 3x1, 2x2
;extra-switches=
;
;button_types: trim-all, trim-(left|right)-(up|down|both)
;May occur more than once if necessary.
;extra-buttons=
;
[modules]
; there is no need to enable the cyrf6936 module unless
; it is wired to an alternate port. It is Enabled automatically otherwise
  enable-cyrf6936 = B12
  has_pa-cyrf6936 = 0
  enable-a7105    = A13
  has_pa-a7105    = 1
  enable-cc2500   = A14
  has_pa-cc2500   = 1
  enable-nrf24l01 = A15
  has_pa-nrf24l01 = 1
; enable-multimod = A13

Devo10

2401 = B7

hardware.ini

;Only useful for transmitters with an after-market vibration motor
;enable-haptic=1
;
;switch_types: 3x2, 3x1, 2x2
;extra-switches=
;
[modules]
; there is no need to enable the cyrf6936 module unless
; it is wired to an alternate port. It is Enabled automatically otherwise
enable-cyrf6936 = B12
has_pa-cyrf6936 = 1
enable-a7105 = A13
has_pa-a7105 = 1
enable-cc2500 = A14
has_pa-cc2500 = 1
enable-nrf24l01 = B7
has_pa-nrf24l01 = 1
; enable-multimod = A13

Devo8, Devo F12E (PCB looks slightly different but MCU and pin are the same)

2401 = B3

hardware.ini

;Only useful for transmitters with an after-market vibration motor
;enable-haptic=1
;
;switch_types: 3x2, 3x1, 2x2
;extra-switches=
;
[modules]
; there is no need to enable the cyrf6936 module unless
; it is wired to an alternate port. It is Enabled automatically otherwise
enable-cyrf6936 = B12
has_pa-cyrf6936 = 1
enable-a7105 = A13
has_pa-a7105 = 1
enable-cc2500 = A14
has_pa-cc2500 = 1
enable-nrf24l01 = B3
has_pa-nrf24l01 = 1
; enable-multimod = A13

Devo12

2401 = B3

hardware.ini

;Only useful for transmitters with an after-market vibration motor
;enable-haptic=1
;
;switch_types: 3x2, 3x1, 2x2
;extra-switches=
;
[modules]
; there is no need to enable the cyrf6936 module unless
; it is wired to an alternate port. It is Enabled automatically otherwise
enable-cyrf6936 = B12
has_pa-cyrf6936 = 1
enable-a7105 = A13
has_pa-a7105 = 1
enable-cc2500 = A14
has_pa-cc2500 = 1
enable-nrf24l01 = B3
has_pa-nrf24l01 = 1
; enable-multimod = A13

Last edit: 06 Mar 2017 06:04 by vlad_vy.

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ds864
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20 Oct 2016 07:37 #55181 by ds864

Replied by ds864 on topic 3in1 / 4in1 RF module

Thanks for the help on this it still looks like a lot of work fitting the 4-in-1 into a 7e. I kind of like the idea of the 3-in-1 as I won't be touching the original module. This way if it all goes wrong I still have that module working (no worse off). But what are the issues with the 3-in-1 you mention?

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vlad_vy
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20 Oct 2016 08:48 #55182 by vlad_vy

Replied by vlad_vy on topic 3in1 / 4in1 RF module

I'm not sure, but it looks like 3in1 has problem with LNA for A7105 and nRF24L01 chips.

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justyn07
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20 Oct 2016 13:59 #55190 by justyn07

Replied by justyn07 on topic 3in1 / 4in1 RF module

i just order a 4 in 1 module from banggood and i never done the hardware ini. do you just copy paste the ini.

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vlad_vy
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20 Oct 2016 14:25 #55191 by vlad_vy

Replied by vlad_vy on topic 3in1 / 4in1 RF module

You need UNIX style editor to edit *.ini files. For example, "Notepad+".

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justyn07
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20 Oct 2016 15:24 #55195 by justyn07

Replied by justyn07 on topic 3in1 / 4in1 RF module

thank you. i have notepad+.

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ako
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20 Oct 2016 17:43 #55222 by ako

Replied by ako on topic 3in1 / 4in1 RF module

epilot wrote: The module is available on Banggood now.

4in1 module

Hmm... what about the antenna track from the solder point of the bare module to the UFL connector? Doesn't it affect the signal quality?
One could consider cutting the trace and soldering a UFL connector directly to the three points at the bare module. Is the stock antenna cable long enough to reach that point? I don't want to open my Devo 10 to check it.
I would consider buying this new module for my Devo 10 and removing the bare 4in1 and using that one in my AT9 when everything is ready.

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victzh
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20 Oct 2016 22:01 #55231 by victzh

Replied by victzh on topic 3in1 / 4in1 RF module

That is my concern as well. To be 50Ohm trace the board on which the module mounted should be 4 layer one. Or for this thickness it should be coplanar wave guide - which is does not seem to be - for this type of transmission line it should be surrounded by ground from the both ends. if stock antenna is long enough it is definitely better to move U.FL closer to the module output.

But people report reasonable power output from the module, so maybe we don't understand something.

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HappyHarry
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20 Oct 2016 22:16 #55233 by HappyHarry

Replied by HappyHarry on topic 3in1 / 4in1 RF module

i was also worried about the transmission line so i modified it, pictures of the modification are in this post here >> www.deviationtx.com/forum/how-to/5955-7e...1?limitstart=0#49844

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victzh
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20 Oct 2016 22:28 #55234 by victzh

Replied by victzh on topic 3in1 / 4in1 RF module

You know what, on your photo it looks like a legit coplanar waveguide, my only concern is it crosses the module footprint a bit. It explains why the other people report reasonable results. For 1.6mm (59mil material thickness) FR4 and 6mil gap between the guide and ground plane it width will be around 50mil or 1.27mm - which seems to be what it is.

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BirdBarber
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Hummingbird Assassin

20 Oct 2016 22:59 - 20 Oct 2016 23:01 #55236 by BirdBarber

Replied by BirdBarber on topic 3in1 / 4in1 RF module

I range tested low power DSMX on a Devo 10 4-in-1 and a 7E with range mod and got nearly identical results at the same power. I think that this implies that there isn't a 4-In-1 antenna trace issue, at least at low power DSMX. Here are the details: www.deviationtx.com/forum/7-development/...dule?start=780#52692

Last edit: 20 Oct 2016 23:01 by BirdBarber.

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ds864
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21 Oct 2016 09:34 #55245 by ds864

Replied by ds864 on topic 3in1 / 4in1 RF module

After all that I've decided to install two separate modules the NRF24L01 & A7105 (links below). These two modules look fairly simple to fit and only cost me £9.50. I also get to reduce the amount of risk involved in doing the mod. My only issue is having 3 antenni. I have seen some people just curl it up inside the Devo case so I may try that first unless anyone has a better idea?

Whilst I'm at it I'm going to cut off the top of the existing aerial and put on a screw fitting too. I may even be tempted to go for the range mod if I can get the shield off. I also have some 3 position switches coming for the ultimate Devo 7e.

NRF24L01 : www.aliexpress.com/item/2-4G-NRF24L01-PA....13010608.0.0.5UhMdP
A7105: www.aliexpress.com/item/A7105-RFIC-500m-....13010608.0.0.UrHGw3

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C0ckpitvue 777
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22 Oct 2016 19:09 #55278 by C0ckpitvue 777

Replied by C0ckpitvue 777 on topic 3in1 / 4in1 RF module

Is this 4in1 compatible with the 7e w/out the wire soldered to the mcu?And are there any major issues with just using the original 7e chip instead of the upgrade for more space like in the ultimate version?In other words is this 4in1 w/out major issues to go straight in the 7e.

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C0ckpitvue 777
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22 Oct 2016 19:10 #55279 by C0ckpitvue 777

Replied by C0ckpitvue 777 on topic 3in1 / 4in1 RF module

All fb is greatly appreciated.

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epilot
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22 Oct 2016 20:02 #55281 by epilot

Replied by epilot on topic 3in1 / 4in1 RF module

You still have to solder to the MCU if you want to use all four modules.

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HappyHarry
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22 Oct 2016 21:26 #55284 by HappyHarry

Replied by HappyHarry on topic 3in1 / 4in1 RF module

the 4in1 will work fine in the stock 7e, it doesn't require an upgraded mcu in the transmitter to work. also as epilot said if you wish to use all 4 rf chips you need to solder to the mcu, but if you only wish to use 3 of the rf chips you can avoid that

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C0ckpitvue 777
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22 Oct 2016 22:56 #55288 by C0ckpitvue 777

Replied by C0ckpitvue 777 on topic 3in1 / 4in1 RF module

Thank you.

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Devo 12s 3in1 / 4in1 RF module neat installation.

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