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Aug 10, 2015, 12:10 PM
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Mini-HowTo

DEVO 7E Tutorials (Under construction)


AVANT-PROPOS

Here is a serie of tutorials dedicaced to the Devo7E radio, a compact lightweight model compatible with the DeviationTX OS
.
This opensource software permits to control third party radio frequency chips and by consequence to support a lot popular protocols:
DSM2/DMX2/FrSky/Flysky/V202/SYMA, etc....

A total of seven videos to achieve the building of the super "Devo7E". The objective is to stimulate beginners by showing basic steps of the 6 proposed mods.

As not being an electronician, I am sure purists can criticize some parts but at least these videos can be used as a starting point.
I am giving also a list of materials and tools mainly in Banggood because they referenced almost all requierements


The main item, you will need is a Devo7E (the E is important because there is a Devo 7 not deviationTX compatible)

http://www.banggood.com/Wholesale-Walkera-Devo-7E-7CH-Transmitter-Mode-2-Without-Receiver-p-48117.html



Tools

1) In general, you will need one or two good soldering irons, at least one with a thin tip

http://www.banggood.com/907-Constant-Temperature-Electric-Soldering-Iron-Lead-free-22OV-60W-p-920554.html

and

http://www.banggood.com/9-in-1-Electric-Soldering-Tools-Set-With-Iron-Stand-Desolder-Pump-p-924163.html

2) An Iron tip cleaner

http://www.banggood.com/Wholesale-1-...105842201212FR

3) Third hand with Magnifier

http://www.banggood.com/New-2_5X-7_5X-10X-LED-Light-Magnifier-Stand-Clamp-Magnifying-Tool-p-90554.html

4) Heat shrink tube

http://www.banggood.com/Wholesale-30mm-Adhesive-Polyolefin-31-Heat-Shrink-Tubing-Tube-Sleeve-Sleeving-Wrap-1_6ft-p-47178.html

5) Tweezers

http://www.banggood.com/7pcs-BGA-Precision-Tweezer-Set-Antistatic-Tweezers-Stainless-Tweezers-p-924799.html

6) Pliers

http://www.banggood.com/4Pcs-Mixed-Needle-Round-Nose-Pliers-Tool-Kit-Jewelry-Making-Tool-p-930792.html

7) Magnifier glass

http://www.banggood.com/20X-LED-Magnifier-Magnifying-Double-Eye-Glasses-Loupe-Lens-p-943829.html

8) Electrical tape

http://www.banggood.com/3M-Electrical-Insulating-Tape-Household-Electrical-Adhesive-Tape-p-931869.html

9) Flux

http://www.banggood.com/Wholesale-10cc-Repair-Tool-Solder-PCB-SMD-Soldering-Paste-Flux-Grease-SMT-BGA-IC-RMA-223-p-35758.html

10) Hex screwdriver

http://www.banggood.com/ProsKit-HW-221M-8-In-1-Folding-Aluminum-Hex-Driver-Wrench-p-990134.html




INTRODUCTION

Introduction to DeviationTX OS possibilities

Devo7E tutorials: part1 - introduction (9 min 55 sec)


DEVIATIONTX INSTALLATION


How to install DeviationTX with your fresh Devo7E. Without any modding, by just installing this OS, you can fly DSM2/DSMX/J6Pro
protocols but with limited range

- Nightly Build
http://www.deviationtx.com/downloads...nightly-builds

- DevoDfuse V2.0
http://www.walkera.com/en/upload/upgrade/

or

http://www.hobbyone.com.hk/updater.php

Devo7E tutorials: part2 - deviationTX installation (14 min 57 sec)



DISASSEMBLING THE DEVO7E

You will need a 2mm hew screwdriver

http://www.banggood.com/ProsKit-HW-221M-8-In-1-Folding-Aluminum-Hex-Driver-Wrench-p-990134.html


Devo7E tutorials: part3 - devo7E disassembling (7 min 39 sec)




CYRF6936 DIODE MOD

The hardest mod to do with your Devo7E. If you don't plan to use intensively the DSM2/DSMX/J6Pro protocols,
you can bypass this mod. In the worst case, if you diode mod failed, you can install in replacement the CYRF6936 module of the DEVO8S

http://www.banggood.com/Walkera-WK-DEVO-S-MOD-Upgrade-Module-DEVO-8-12-To-DEVO-8S-12S-p-922596.html

Alternatively if you don't want to jump with a wire the diode, you can use this conductive ink

http://www.banggood.com/0_3mL-Conductive-Silver-Paint-Wire-Paste-Grease-For-Electronics-PCB-Repair-p-976248.html


Devo7E tutorials: part4 - CYRF6936 diode mod (31 min 14 sec)



CYRF6936 ANTENNA MOD

The antenna mod permits to install for example any kind of 2.4G antenna and/or a WiFi booster to extend the range.
You will need a RG316 cable ending with RP-SMA connector

http://www.banggood.com/6Inch-15cm-RG316-Cable-Connector-RP_SMA-Male-Jack-to-Female-Plug-Bulkhead-Crimp-p-983166.html


and a 2.4G antenna. I select this model (you can choose any 2.4G model you want as soon it's ending with a RP-SMA connector)
http://www.banggood.com/Wholesale-Dual-Band-2_4-or-5_8Ghz-6dBi-RP-SMA-Omni-Directional-Wireless-WiFi-Router-Antennas-p-49578.html

Devo7E tutorials: part5 - CYRF6936 antenna mod (27 min 10 sec)



3x2 SWITCHES MOD

This mod is very useful to add the usage of two extra channels. For example to select a flight mode of a DIY racer.
Here is the pinout (courtesty Daryoon)






You will need:

- 2 x 3-way switch

http://www.banggood.com/RC-Tranmitter-Switch-For-Walkera-Futaba-FlySky-WFLY-JR-p-989223.html

- 4 x 1N4001 diodes

http://www.banggood.com/25-Pcs-1N4001-IN4001-Diode-1A-50V-Assortment-Kit-Set-p-932504.html

- 1 x Dupont wires

http://www.banggood.com/40-x-30cm-Male-To-Female-DuPont-Breadboard-Jumper-Wire-Cable-p-89708.html

Devo7E tutorials: part6 - 3x2 switches mod (59 min 52 sec)



NRF24L01 MOD

The installation of a nRF24L01 RF chips permits to control most of toys's protocols: WLtoys, SYGMA, YD717, Cheerson, Hantai and many more. So if you have more some nanos, micros, and minis, the nRF24L01 is probably a "must to install" into your Devo7E.

You can find the nRF24L01 pinout at
https://bitbucket.org/PhracturedBlue...eModuleInstall

and the devo7E pinout

https://bitbucket.org/PhracturedBlue...eModuleInstall

You will need:

- 1 x nRF24L01
http://www.banggood.com/2_4G-NRF24L01-PA-LNA-Wireless-Module-1632mm-Without-Antenna-p-922601.html

- 1 x uFL to RP-SMA coaxial cable
http://www.banggood.com/10cm-PCI-UFL-IPX-to-RPSMA-Female-Jack-Pigtail-Cable-p-924933.html

- 1 x 2.4G antenna
http://www.banggood.com/Wholesale-Dual-Band-2_4-or-5_8Ghz-6dBi-RP-SMA-Omni-Directional-Wireless-WiFi-Router-Antennas-p-49578.html

- 1 x Dupont wires
http://www.banggood.com/40-x-30cm-Male-To-Female-DuPont-Breadboard-Jumper-Wire-Cable-p-89708.html

- 1 x Copper foil EMI shielding

http://www.banggood.com/Wholesale-6-Feet-X-50mm-Copper-Foil-Tape-EMI-Shielding-for-Fender-Guitars-6-ft-X-2-p-49769.html



Devo7E tutorials: part7 - nRF24L01 mod (52 min 59 sec)



CC2500 MOD

The installation of a CC2500 RF chips permits to control mainly two FrSky protocols, i.e. the D8 and V8.
FrSky are known to be one the best protocols in term or range (> 1km) and support telemetry. Ideal for DIY racers.

You can find the CC2500 pinout at
https://bitbucket.org/PhracturedBlue...eModuleInstall

and the devo7E pinout

https://bitbucket.org/PhracturedBlue...eModuleInstall


You will need:

- 1 x CC2500
http://www.banggood.com/CC2500-PA-LNA-Romote-Wireless-Module-CC2500-SI4432-NRF24L01-p-922595.html

- 1 x uFL to RP-SMA coaxial cable
http://www.banggood.com/10cm-PCI-UFL-IPX-to-RPSMA-Female-Jack-Pigtail-Cable-p-924933.html

- 1 x 2.4G antenna
http://www.banggood.com/Wholesale-Dual-Band-2_4-or-5_8Ghz-6dBi-RP-SMA-Omni-Directional-Wireless-WiFi-Router-Antennas-p-49578.html

- 1 x Dupont wires
http://www.banggood.com/40-x-30cm-Male-To-Female-DuPont-Breadboard-Jumper-Wire-Cable-p-89708.html

Devo7E tutorials: part8 - CC2500 mod (1 hr 2 min 38 sec)
Last edited by SeByDocKy; Nov 23, 2015 at 12:10 AM.
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Aug 10, 2015, 12:11 PM
Registered User
SeByDocKy's Avatar
Reserved
Latest blog entry: Youbi XV-130 130MM FPV Racer
Aug 10, 2015, 12:21 PM
I void warranties
Please dont overlook the brand new extra POT mod we've got going on at Devo forums! Up to 6 additional analog inputs (NOT counting the two add-on 3-way switches you have mentioned)!!

http://deviationtx.com/forum/7-devel...-for-devo-tx-s
Aug 10, 2015, 12:24 PM
Registered User
SeByDocKy's Avatar
Quote:
Originally Posted by Cereal_Killer View Post
Please dont overlook the brand new extra POT mod we've got going on at Devo forums! Up to 6 additional analog inputs (NOT counting the two add-on 3-way switches you have mentioned)!!

http://deviationtx.com/forum/7-devel...-for-devo-tx-s
Yes probably the next video I will do

But already these videos requiered to me a lot of efforts ...
Latest blog entry: Youbi XV-130 130MM FPV Racer
Aug 14, 2015, 07:16 AM
I void warranties
What range are you guy's seeing out of the various CC2500 modules with the different FrSky 2-way receivers?
Sep 09, 2015, 04:44 PM
Registered User
Is there any chance you could help me, Iīm new at this and just got my first brushless quad (eye one extreme) I want to use this controller with the one link but not sure how to. Tried once but on the seventh channel I get stuck. also donīt have a sport mode option, just beginner or expert.

any help I would appreciate. Tried looking on other threads but can't find nothing.

Thank you
Sep 28, 2015, 03:52 AM
Brisbane, Australia
I really appreciate you doing this thread SeByDocKy. Thanks
Oct 01, 2015, 12:25 AM
Registered User
SeByDocKy's Avatar
Quote:
Originally Posted by rcordonb View Post
Is there any chance you could help me, Iīm new at this and just got my first brushless quad (eye one extreme) I want to use this controller with the one link but not sure how to. Tried once but on the seventh channel I get stuck. also donīt have a sport mode option, just beginner or expert.

any help I would appreciate. Tried looking on other threads but can't find nothing.

Thank you

What you can do is to install a DSMX compatible receiver with your EOX
Latest blog entry: Youbi XV-130 130MM FPV Racer
Oct 01, 2015, 12:26 AM
Registered User
SeByDocKy's Avatar
Quote:
Originally Posted by Ian444 View Post
I really appreciate you doing this thread SeByDocKy. Thanks

Thks
Latest blog entry: Youbi XV-130 130MM FPV Racer
Oct 06, 2015, 03:48 PM
Registered User
I need some advice:

I removed the old Tx to install the new 12s full power module and lost some solder tabs on the board. (Honestly, I don't know how this doesn't happen most of the time!). Specifically 2 and 3 counting from the left (blue and orange in the Hacks instructions).

Is there any other way to get to these inputs? If not, any reason to keep the unit or just toss in the garbage? ;-(
Oct 08, 2015, 05:00 AM
Brisbane, Australia
thearne3 do you still need this info, I can have a look tomorrow if you want.
Oct 08, 2015, 10:55 AM
Registered User
Hi all,

SeByDocKy was kind enough to respond in a PM. In case anyone else has this problem:

Carefully scratch through the board at each tab spot. A silver/copper spot will eventually appear. They are small, but I was able to solder to each. The leads are definitely delicate, so I'm hoping the connections last! I may try reinforcing with hot glue...
Oct 09, 2015, 07:25 AM
Brisbane, Australia
Thats good to know thearne3, I was hoping there would be some other spot to attach the wires to but obviously not.

SeByDocky, my new Devo 7e arrived and I was able to follow your video for installing the firmware with no hiccups, it all went very smooth! Nice job you did. I also installed an nRF24L01 module, for the antenna I soldered a 31mm wire onto the centre of the antenna connector, so far I've had no range problems (the module has the power amplifier in it). I can bind and fly all my nano/micro quads with this tx, as well as my micro planes. This is SO convenient. The firmware (and whole project) really is a credit to those who developed it. The 7e has a light and accurate feel in the sticks and its way easier to fly the quads than with the stock tx's which means more flying and less crashing I won't be adding any switches to this tx because I like the minimalist look. With the ability to set up switches or virtual pots with the trim and display buttons, I don't think I'll need any extra switches (plus my needs are basic). Next I will investigate rechargeable battery options for the 7e, and figure out if I need to do the range mod on the DSM2/X module, if I don't need the range I won't do it (and save battery power). The only minor downside is finding out how to actually set up a model and use the radio, there is documentation, but the fine print and hands-on how-to's are spread about the forums posted by Devo owners. Nothing that a bit of digging around can't fix.
Oct 21, 2015, 09:11 AM
Registered User
SeByDocKy's Avatar
Quote:
Originally Posted by Ian444 View Post
Thats good to know thearne3, I was hoping there would be some other spot to attach the wires to but obviously not.

SeByDocky, my new Devo 7e arrived and I was able to follow your video for installing the firmware with no hiccups, it all went very smooth! Nice job you did. I also installed an nRF24L01 module, for the antenna I soldered a 31mm wire onto the centre of the antenna connector, so far I've had no range problems (the module has the power amplifier in it). I can bind and fly all my nano/micro quads with this tx, as well as my micro planes. This is SO convenient. The firmware (and whole project) really is a credit to those who developed it. The 7e has a light and accurate feel in the sticks and its way easier to fly the quads than with the stock tx's which means more flying and less crashing I won't be adding any switches to this tx because I like the minimalist look. With the ability to set up switches or virtual pots with the trim and display buttons, I don't think I'll need any extra switches (plus my needs are basic). Next I will investigate rechargeable battery options for the 7e, and figure out if I need to do the range mod on the DSM2/X module, if I don't need the range I won't do it (and save battery power). The only minor downside is finding out how to actually set up a model and use the radio, there is documentation, but the fine print and hands-on how-to's are spread about the forums posted by Devo owners. Nothing that a bit of digging around can't fix.
Yes 99.999% of credit to PB who did this amazing deviationTX project
Latest blog entry: Youbi XV-130 130MM FPV Racer
Oct 22, 2015, 01:36 PM
Registered User
Hey I noticed that the the Devo S mod seems to be gone from BG now and I don't see it anywhere else for any reasonable price... does that mean that now you are risking your Tx by doing the range mod?


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