Audio (voice) - Stock 9X PCB

[adagiohr41]

I know it might have been posted here before, but is there any way of testing the module by for example grounding some pin? I can't find the post. That could help adagiohr41 and others to fix their audio problem. If so, it will have to go to the wiki as it is important..

Thanks,

Joao

Good morning Joao,

There is a schematic in the documentation of the MP3 module which shows a configuration using an xtal and IC which I won't be able to get for several weeks due to my location. Another option might be to just order another board in the meanwhile. I reversed the installation and went back to what was already modified (battery mod, speaker with haptic, FrSky telemetry, Smartieparts) and all is back to normal. Any thoughts before I give up and order another module?

George

[jhsa]

there might be a way to test the module. just wait for someone that knows how to jump in.. I remember someone posting about it sometime ago..

Have a look here too. maybe it helps..

http://openrcforums.com/wiki/index.php/ ... By_Argo.29

[adagiohr41]

Everything helps at this point ... thanks. I'll go through the procedure one more time and wait to see if there is more input on the forum.

[jhsa]

I just don't like to be defeated by a piece of electronic junk with a lot of little legs
My module is here sitting on the workbench waiting for the rotary encoders to arrive.. Then will do both mods at once..
I hope they didn't change anything on the modules. lately there have been some people having problems with the audio mod...
Joao

[adagiohr41]

Here's a pic of each board in the event someone can spot anything out of order.

[jhsa]

the only think I can see is that it looks like positive leg of the 10uF capacitor (the big one) is nearly touching the jumper that is connected to the ground.. if they touch it'll be shorting the 3.3V regulator destroying it.. it looks very close but difficult to see in a picture..

[jhsa]

On the module picture.. can you please have a good look at the sd card holder pins?? take a good picture or/and inspect it with and good magnifier.. on the picture you've posted have a look at the second pin from the top as it looks as it is not soldered.. and also check all the others for cold solder..

Also check that the 2 little jumpers on the back of the sound module's PCB are not touching the other board

João

[rabono]

Finally found the problem after reading this http://www.rc-cam.com/forum/index.php?/ ... ject-blog/ I soldered the ground at the wrong pad very close but was not the right spot here the difference now no more beeping with the voice and telemetry working right
Jhsa can you help me and post a Eeprom for guidance?

[jhsa]

Sure..

[bill516]

adagiaohr41

Have you insulated between the sound module and your strip board, I know that there are not many bits sticking through the sound board but you only need one to create a short.

[rabono]

Thank you so much Jhsa

[jhsa]

Note that eepe still doesn't handle the new AND switches in custom switches correctly.
Select for example the "Pico Cub" plane from my eeprom and navigate to the C:Switches tab in eepe.
there you find:

SW1 time on 5 off 10 (I think )
SW2 AND SW1 ELE (then use SW2 on the voice switch to speak the timed telemetry event every 10 seconds when the ELE Switch is on

Now with the new version of the FW you can do like this..

SW1 time on 5 off 10 ELE (new AND switch)
That eliminates the need for the second C.SW.. just use now SW1 on the voice switches instead of SW2.

As I said before eepe still doesn't show the physical switches as an option in the AND switch drop down menu.

Joao

[MikeB]

My version of eepe does
I'll try to get it committed and ask Erazz to build it. I tried a build, total failure and not enough time to find out why (on WIN 7).

Mike.

[jhsa]

Good that you don't mind sharing it with us

Thank You

[Oliver]

I know it might have been posted here before, but is there any way of testing the module by for example grounding some pin? I can't find the post. That could help adagiohr41 and others to fix their audio problem. If so, it will have to go to the wiki as it is important..

Thanks,

Joao

For SD-mini(WTV020-SD-16P) it is P02 and P03 (Next, Prev) and P07(Play|Stop)
I think that for SD-not-mini (WTV020-SD-20S) it must be the same, pins 3 (P07), 4 (P03) and 7 (P02)

[adagiohr41]

On the module picture.. can you please have a good look at the sd card holder pins?? take a good picture or/and inspect it with and good magnifier.. on the picture you've posted have a look at the second pin from the top as it looks as it is not soldered.. and also check all the others for cold solder..

Also check that the 2 little jumpers on the back of the sound module's PCB are not touching the other board

João

The SD card pins are soldered but I can hit them with some heat just in case. The 10uf cap is placed that way for clearance and the leads are well insulated. The 3.3V supply is fine. I read the post about PO2,3 and 7. They are the proper pins according to the schematic posted in the PDF on the emartee website. I believe the board needs to be wired into the transmitter circuit for manually forcing the play option with the PO pins. I tried this both in and out of the transmitter circuit without any luck. I have limited knowledge of the actual circuitry in the MP3 module, but It would be nice if it could be rigged on the bench for testing without actually wiring it into the transmitter. Kinda narrows down the source of the problem.
Another comment ... the boards have a plastic spacer between them which provides for plenty of clearance. Also, the radio is providing the connection properly on pin 17 as I was using the HK backlight with the FET mod and the display was switching on and off properly with key presses.

Thanks to all ....

[jhsa]

I will try to bench test mine in a while.. I hope I don't damage it

Have some breadboard, switches and regulators.. also I'm looking at the module's manual and even if its a 2 line serial module, should also respond to grounding those pins mentioned above with switches.. So, I guess it's worth a try.. that's it, going to bed late, AGAIN

[jhsa]

adagiohr41, If I succed you can try to do it I'll try to post a video.

We can't let these thingys with a lot of legs win from us..

Joao

[thomas9x]

You can test the sound module without the 9x voice interface. Install the 8-ohm speaker and apply 3.3V power. Whenever you temporarily ground pin-7 (P02/NEXT) you will hear the next sound file beginning with file 0001. If you don't hear anything then the list of suspects is very short (SD card/file issue, wrong/bad module, poor DC voltage).

- Thomas

[jhsa]

Yeah, that's the point of doing it really. Otherwise we'll be banging our head against the wall without knowing what's going on.. Blaming the FW, the radio, the soldering, etc.. at least if we do this test first we can make sure (I hope) that the module is working even before we build the other board.. At least that is what I expect..

[hageha]

Here's a pic of each board in the event someone can spot anything out of order.

DSCN3650a.JPG

I am missing a bridge at pin1!
look at João´s Pic of the module. There is no Power!
viewtopic.php?f=5&t=948&start=1410
Hans

[jhsa]

You're absolutely right.. when he removed the pins also removed the shunt.. The module is not powered.. well spotted. I didn't see it..
But looking better looks like that pad never saw solder on it..
adagiohr41 You know what to do.. I bet it will work after..
I'm about to test mine on the bench.. if it works will make a video
Joao

[adagiohr41]

Here's a pic of each board in the event someone can spot anything out of order.

DSCN3650a.JPG

I am missing a bridge at pin1!
look at João´s Pic of the module. There is no Power!
viewtopic.php?f=5&t=948&start=1410
Hans

Hans,

I just was getting ready to request that someone would post a close up picture of the sound module because I thought I might be missing a surface mount component in that area. My work area is in the basement and my PC is upstairs. So please accept my apology for not reading your post earlier.
I followed your link and still am not sure what jumper is missing. If someone could please post a close up of a working board it would well be appreciated. I do have two jumpers on the bottom side of the board, but I don't think those are the ones you're referring to.
Many thanks ...

[adagiohr41]

I just reviewed all, and I mean ALL of the picture posts from page 1 on the forum and it looks as if there is a solder bridge between two pads by pin 1. So I'll go down and give that a try now. Stay tuned ....

[jhsa]

it's not a jumper, it's a solder bridge to pin 1.. I will mar on a picture and upload it. give me some minutes..

[jhsa]

wait, don't do anything yet

The solder bridge is from pin 1 to the left not the ones above pin 1.. I'll post a pic

[jhsa]

It seems that my two Modules are different. will post pictures of both..

[adagiohr41]

It seems that my two boards are different. will post pictures of both..

Joao and Hans,

No need to publish pics. I soldered across the two pads, all the stars in the galaxy are now aligned properly and we are right with the world! I can increment the voice files with each push of a switch rigged to PO2. Thank's to your persistence in getting me through this issue, I am indebted to you both! And also thanks to Hans for taking the time to review my pic and recognize the missing jumper. Now I need to reinstall everything back in the radio ... a project for tomorrow.

George

[hageha]

Pin 6 of the IC must be connected to 3.3V

[jhsa]

We just found out that there are some differences after all.. look at my two pics.. By the way, I've made a little video of my module's bench test..
Here it is. George, well done. I'm glad you fixed it.. After you start flying with the audio you will never want to go back to how it was before, believe me


[BBvideo 425,350]http://www.youtube.com/watch?v=xxxf4iSFqLs[/BBvideo]