Devo 7E "Missing CYRF6936" and blank hardware.ini

I have a Devo 7e with the 3X2 switch mod and the 3 in 1 Module from banggood. This setup has worked fine for over a year for toy grade quadcopters. I only recently tried to fly a DSMX hobby grade quad and learned that my 7e at least at that point had a range of about 25ft (full power, no joke, have the crashes to prove it). I had already done the range mod with conductive ink. So I decided to do the WK-DEVO-S-MOD. I thought the install went fine but now I always get the "missing CYRF6936 module" no matter what I do. Additionally every time I try to edit the hardware.ini (with notepad ++) it seems to save fine. But if I turn on the Devo then turn it off and turn it on in USB mode again when I try to reopen the hardware.ini. The file is empty or corrupt as shown in my pictures. I don't know if the CYRF6936 is missing because I can't edit the ini. OR is my ini being corrupted because my CYRF6939 is missing because of a mistake in my installation? Or am I suffering from 2 different problems? It currently has v5.0.0 installed and I checked it with fresh AA batteries showing 6.2Vs. Any help trouble shooting would be appreciated.

When I open my hardware.ini after turning on the controller it is blank



I believe the file is being corrupted because I can't even edit it or delete it. I either need to reformat the drive or select tools and repair the drive. Before I can try again to add the hardware.ini again from my PC


Below is a link to a full size image of my build. (Large File)
graknil.com/image_host/full_install.JPG

Since this started when you changed the CYRF module, it seems to me you need to rule that out before messing with software. Off the top of my head i can think of several items to verify:
- power consumption, weak or incomplete solder joints, crossed wires, weak batteries, and so on. My first suspicion is the power consumption.

Maybe you could post a detailed photo of your wiring?

The bottom most link I thought was pretty detailed. I don't know why that one of the three didn't show a thumbnail I will try again

Here is my install. I Used the pin outs from hacksmods website.


To test I went back and temp reinstalled the original chip all of my problems went away. I was again able to save my ini and I did not get the missing module fault. The ad said it was the S MOD chip for DEVO 8 or DEVO 12 which I thought was the chip I needed to get. Unless there are alternate hook up directions or I bought the wrong chip I don't know what to do different.


This is the chip I bought and installed. http://www.hobbyman.com/walkera-wk-devo-s-mod-devo-8-or-12-to-devo-8s-or-12s-upgrade-module.html?search=devo&page=2

Now that I am digging deeper I am getting confused this link on the forum reverses MISO and MOSI compared to the hacksmods website. I have now tried it both ways. Same result missing module, corrupt hardware.ini
https://www.deviationtx.com/forum/6-general-discussions/2498-8s-mod-range-mod-devo-7e

Sorry, I totally missed your link! The wiring looks clean, but looking at the pins I wonder if you've swapped cs with 5v? On the SMOD board, pin 1 is yellow, and goes to the leftmost pin on the 7e. But your wiring has it going to pin 6. And pin 6 on the SMOD is going to pin 1. That could be a problem.

Thank You. I stared and stared at the schematic before and after I hooked this all up. I am really bummed I missed that. Do you think I fried the chip.

Putting 5v onto a 3.3v circuit may be a problem, but not always. On the other hand, using 3.3v logic-level on the 5v Vcc probably won't hurt. Try the swap and let us know.

Everything is working fine. Now MOSI and MISO are connected per hacksmods version and I corrected the 5v. It is binding with DSMX rx. Thanks for all of the help.