Audio (voice) - Stock 9X PCB

[jhsa]

Yes, the radio comes with a beeper/buzzer.. One of the mods is to replace it with a piezo speaker..
But if you want voice, you will need a loudspeaker..
In my case, as The new sound module also amplifies the beeper signal, I removed the beeper and the transistor that drives it from the board...

~João

[LTMNO]

Joao, just so I am clear, all you did to your radio is add this module that you are currently working on in this topic (Audio (Voice)) and added a loud speaker and removed the buzzer? If so, then great. If not, then which mod did you do prior to this one?

Thanks, just want to make sure.

[LTMNO]

Just so I am clear with you, I was planning on do the SmartieParts Mod, then the EZ Telemetry Mod and then the Haptic/Speaker Mod and then this one we are discussing in this thread.

[jhsa]

Yes, added the sound module + loudspeaker and removed the buzzer..
Didn't do any sound mods before.. Only, flashed er9x, did the frsky telemetry mod to have telemetry on the 9x display, and recently did the rotary encoder mod..

João

[jhsa]

you could do the haptic mod, I didn't, but I think the speaker mod makes no sense as the new sound module also replaces the beeper..

[LTMNO]

Gotcha. Thanks for the advice. I forgot I am doing the LED backlit too

[jhsa]

yeah, I did that one too.. actually the sound module controls that too

[Oliver]

LTMNO, please, look at my photos. To fit my board you also need to remove buzzer, transistor and LM7805 from stock T-board. Anyway, with voice board you don't need all this stuff.

[hageha]

Mike,
do I need to make the interfaces changes as well?
Why now other FET and Schottky diode?
Can we still use the existing?

Hans

[bill516]

Hmm didnt post must have pressed the wrong button. Mike glad you have done a through hole option as the cost of the SMDs was stupid, I can get the through components locally for next to nothing in the quantities I want. Thought just occurred to me could we bend the legs of components and mount them as if they were SMD, I'll have a play this afternoon with some spares and see how it works I know your not supposed to bend legs and things but if needs must, if it does we could get away without drilling all the holes.

Joao

If the tip of your soldering iron is too thick wrap some solid copper wire (think mains cable 2.5mm) around you old tip. You can make it as long as you want and file it to the shape you want, of course if its too long it wont have any strength and will bend easily if you apply too much pressure. I did the same thing with my Dremel soldering iron after the tip they supplied wore to a stump. I used the hot knife tip making sure the hot air blows away from the work and it works a treat, I soldered to the M64 with it.

For any body wanting to make their own boards but dont have a laser printer, http://techref.massmind.org/techref/pcb ... resist.htm . These guys use an inkjet and nothing fancy about it. If you have one that print on DVD's like I used to have and threw away recently you wont need to do any mods.

[LTMNO]

LTMNO, please, look at my photos. To fit my board you also need to remove buzzer, transistor and LM7805 from stock T-board. Anyway, with voice board you don't need all this stuff.

Hi Oliver, thanks for the input... I guess the problem is that I am trying to get ahead of the game before my unit comes. I see that you have removed the components mentioned. What other stuff are you referring to that I don't need? I respect your input. Also, I have been trying to source your components on the part lists and there are many variations of each part. I am great with following guides and filling out orders... but making a decision on what item to get when I don't completely understand the values is difficult. If I were to bring the parts list to the local hardware store for electronics... would they be able to figure it out? On their website, sourcing a '10uf CT3528 Resistor' just doesn't show up. On digi-key, they show 100's different types.

Pino

[jhsa]

10uf is a capacitor, not a resistor..

[jhsa]

Oliver what size components did you use for your board?
Do you have a parts list and also the part size?

thanks

João

[LTMNO]

10uf is a capacitor, not a resistor..

I am just reading the part list lol

[Oliver]

Oliver what size components did you use for your board?
Do you have a parts list and also the part size?

thanks

João

Joao, there is parts list, exported from Eagle, in repository.
I maked board for 1206 and bigger (for tantalum capasitors, look at schematic), but on my photos you can see 0603. Yes, it fitted on the places of 1206. Just I havn't 1206 but have 0603 when soldering firs board.
So, I can tell that the board is for 1206 and smaller.

LTMNO, there is some mistaken column in parts list, "Library". So, capasitors and resistors are in the same library in Eagle.

P.S. I can fix column "Library" by hands and give it new name "Comment" later...

[jhsa]

Thanks for explaining that...

João

[MikeB]

Mike,
do I need to make the interfaces changes as well?
Why now other FET and Schottky diode?
Can we still use the existing?

You don't NEED to make the changes to the interface, unless you think it is worthwhile. The extra components T2, D4 and D5, and the two I/O connections are to provide the PC connection at logic levels. I see these as being fitted instead of the RS232 circuits (TR4 and TR5 and related components) for those that want the 5-volt, logic level connection.

You may want to consider the extra resistor and capacitor I have added, where I split the resistor going to pin 3 of the LM386 into to, with a 330pF capacitor as an extra low pass filter. The exact values for the filter capacitors (C13 and C18 on my circuit above) depend of the values of R23, R13 and R14.

Mike.

[jhsa]

Mike, did you try my values? The sound is not so bad, the PWM noise is quite low, and a lot of the buzz from the sound file at low volume is gone as well..
The only buzz I have now is from the amp itself.. it's picking up noise from somewhere.. for example, when I turn the radio on the buzzin is a bit louder..

João

[LTMNO]

Oliver what size components did you use for your board?
Do you have a parts list and also the part size?

thanks

João

Joao, there is parts list, exported from Eagle, in repository.
I maked board for 1206 and bigger (for tantalum capasitors, look at schematic), but on my photos you can see 0603. Yes, it fitted on the places of 1206. Just I havn't 1206 but have 0603 when soldering firs board.
So, I can tell that the board is for 1206 and smaller.

LTMNO, there is some mistaken column in parts list, "Library". So, capasitors and resistors are in the same library in Eagle.

P.S. I can fix column "Library" by hands and give it new name "Comment" later...

Yes, Thanks Oliver for explaining the parts list. Much appreciated. And please feel free to call me Pino

[hageha]

Mike,
compared to the first schematic, RXD and TXD is reversed in the new one.
Which is correct?

Hans

[MikeB]

The last schematic has the correct labels, the TXD signal is an output and the RXD signal is an input. As always with this, the TXD signal goes to the RXD on the PC and RXD to TXD.

Mike.

[jhsa]

this can be confusing sometimes..

João

[LTMNO]

I'll say... What is a TxD/RxD?

Just kidding... Transmit/Receive Data

[hageha]

I have my "DIL board" brought up to date.
I hope.

[LTMNO]

Okay, I apologize for cluttering the forum will all my posts... but for the benefit of others and myself, I have updated the summary to better reflect what has transpired. I think this is about 99% accurate. I truly finished reading the whole thread last night at around 1:30am EST.

MIKE aka 'MikeB'
Mike originally had a working board based on stripboard and an emartee sound module, the project has taken a turn as the emartee board seemed to change versions through out the last year and problems have been occurring with some builds with delay in speech. This was not acceptable so the team decided to produce its own sound module with the benifit of its original voice board. Today we are at a complete combined solution that encompasses a module with a voice and sound all in one board. Shear genius if you ask me.

Mike's latest 2-sided board has been published by(mbanzi) in Eagle format and that is available in the source folder of the wiki. Mike's board uses the 28 pin DIL chip.
Mikes board uses RS232 to program the Module via Yterm Application he developed.
This is the latest design from just a few days ago... but is not reflected in code.google.com
http://code.google.com/p/amod328/source ... AudioMega/


[hr]

HANS aka 'hageha'
Hans has published his 1-sided board via pictures and in Eagle and is shown in the source folder of the wiki. Hans board has components on both sides with the larger amtel chip. And there is the ability to pull out and put in the SD card via a modified slot on the back for the Radio. (Really Cool). Hans has made a few iterations of the Module including the Smaller Atmel Chip, very hard to solder.
Hans' previous board used TQFP32 and mainly SR0805 components. After consideration, because it might be too difficult for some, he made the second SMD SR1206 board with DIP components and the 28 pin DIL chip.

Latest Design
http://code.google.com/p/amod328/source ... D%2FHaGeHa



Previous Designs
viewtopic.php?f=5&t=948&start=1950#p28542
viewtopic.php?f=5&t=948&start=1950#p28618
viewtopic.php?f=5&t=948&start=1950#p28624
viewtopic.php?f=5&t=948&start=2010#p28898

[hr]

OLIVER aka 'Oliver'
Oliver has published his 1-sided board via pictures and has all Eagle files in the source folder of the wiki. Olivers board uses the TQFP32 (Small) chip and has a different board design that fits nicely behind existing boards in the radio.

Latest Design
http://code.google.com/p/amod328/source ... D%2FOliver



[hr]

Joao aka 'jhsa', from the beginning has been working closely with the project prototyping on a stripboard and testing designs from the team, enhancing features via OOTB thought and creating all the voice files being played on these modules. He has also creating his own... Hans' platform is the latest undertaking.



If this information is not correct, please let me know as I did my best to decipher the threads... All of the latest updates should be in SVN on the Google Code Source.

[MikeB]

Both my board and Hans board use the 28 pin DIL chip, not the TQFP32.

Mike.

[LTMNO]

Both my board and Hans board use the 28 pin DIL chip, not the TQFP32.

Mike.

Thanks, just when I thought I was there... that can fall in the 1% margin of error.

[Oliver]

Pino. Hans maked two different versions of board.
First was for 0805 and TQFP32.
viewtopic.php?f=5&t=948&start=1950#p28542
viewtopic.php?f=5&t=948&start=1950#p28618
viewtopic.php?f=5&t=948&start=1950#p28624
viewtopic.php?f=5&t=948&start=2010#p28898
and if someone wants to repeat it - they can find all information here
There are:
board in Gerber, BMP, mirrored BMP,
schematic, placement and parts lists in PDF,
photos of ready board.

Another confusing point about my board - I haven't Gerber for it now. But I have board and schematics for Eagle (6.2.0).

[MikeB]

OK, I've ordered up a prototype of my board (double sided, plated through for all through hole components). It should be shipped to me on Thursday.
Once I get it, I'll build and test it. If all is OK I'll post/commit the schematic, gerber/drill files and parts list.

Mike.

[LTMNO]

Pino. Hans maked two different versions of board.
First was for 0805 and TQFP32.
viewtopic.php?f=5&t=948&start=1950#p28542
viewtopic.php?f=5&t=948&start=1950#p28618
viewtopic.php?f=5&t=948&start=1950#p28624
viewtopic.php?f=5&t=948&start=2010#p28898
and if someone wants to repeat it - they can find all information here
There are:
board in Gerber, BMP, mirrored BMP,
schematic, placement and parts lists in PDF,
photos of ready board.

Another confusing point about my board - I haven't Gerber for it now. But I have board and schematics for Eagle (6.2.0).

Thanks Oliver for clarifying... I got mixed up for a moment on what was in Source and what I was typing... switching back and forth between screens... Yes, its Hans that had the Gerber Text Export and full schematics in PDF. Its been updated. I posted Hans' latest board design just to show where he was at. But good point on referencing all others. Personally, the small board that can be tucked anywhere is a nice design and could eleviate any worries about interfering with the antenna and internal module. I have some Copper Clad Board and am going to experiment today with a 2 of the designs to just create the board that is.

Thanks again.