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>> THE REPLICANT << Experimental 'Steamy & Gasoliney' Sound-System
 Moderated by: Si. Page:  First Page Previous Page  ...  3  4  5  6  7  8   
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 Posted: Sat Mar 17th, 2018 04:26 am
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Si.
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Hi Juergen :wave:



No I haven't bought one of the mini SD-Player boards ... YET.





( mini SD-Player board )



I'm still to get one of the 'Bluetooth' sound receiving boards as well.





( 'Bluetooth' sound receiving board, with built-in amplifier )



But I did do a little bit of research on the mini SD-Player board though.

The schematics I found, I Posted on >> THE REPLICANT << Thread. :bg:

SD-Player Board ... Schematics & Research





( some of Juergens seriously  C :cool: :cool: L  steampunk DIY Victorian $4!7  ! )



I know your transmitters have some extra ^^ switches I think, sprung toggles ? L:

Each 1 potentially sending some kind of 'pulse' to the R.C. receiver I believe.

So yes, in theory, I guess one of these switches could 'pulse' the SD-player board, through it's 'tracks'.





( More steampunk brass & batteries, from Dr. Sartorius, built in The Mad Professors lab. ! )



Interesting sound possibilities, like . . .

Loco - Clanking sound.

Cat - Meeyowing !

Emilia - "Nearly at the station"

Loco - Hooter

Cat - More Meeyowing

Emilia - "Out the way $4!7 for brains !" :f:

etc. etc.



The options on the SD-Player board, are there for either built in amplifier, or line-level signal OUT to a separate amplifier.

Whether the 'pulse' from your transmitter, going to the receiver, is compatible with the SD-player board, I don't know.


L:


I also suddenly realized, that I guess because your 'Phoenix' sound board is NOT in the loco ...

... but in your 'box of tricks', I guess you can use the same 'Phoenix' board for more than 1 loco. :)





( Juergens 'Box Of Tricks' ... Built by Dr. Sartorius, in The Mad Professors lab ! )



I think with some nice sound-samples, loaded as a series of 'tracks' ...

... an interesting & seemingly random & non-repetitive sound sequence could be heard.



It's good that there is hopefully a bit of spare space in the big 7/8ths locos to fit all this in.

But I guess that space could still fill up pretty fast. :shocked:



It is a pretty good solution altogether though, for the application of sound to an R.C. loco ...

... which as I understand it, is normally pretty difficult, or impossible ?? ... :us:

... unless you are using the 'Tam Valley' DCC R.C. system.



Pioneering stuff !! :thumb:



:moose:



Si.




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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

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 Posted: Sat Mar 17th, 2018 01:24 pm
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Toeffelholm
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Hi Si,

yes he general control of this SD card player with single switches on the Tx will be rather simple with an DelTang Rx65 I think. 

My thoughts at the moment are more around the "loop mode" of this device and trying to understand the manual how it it activated and what is looped. Single sound files on the card or the whole card content.


Juergen

Last edited on Sat Mar 17th, 2018 01:25 pm by Toeffelholm



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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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 Posted: Sat Mar 17th, 2018 06:37 pm
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Si.
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Hi Juergen :wave:



I am not totally 100% sure on EXACTLY how you have your 'Box Of Tricks' wired up. L:



If you have a spare minute, can you draw a very simple 'block-diagram' of the signal-flows.

It doesn't have to show every single wire & connection etc.

Just a rectangle with the name of the device in it & an arrow to the following devices input is fine.



Very simple minimalist styleee, I'm sure you know what I mean. :)





At the bottom, I think I see the 'transmitter-board' left & clearly the 'impedance-converter-board' right. L:

At the top, I see an UNKNOWN ? connector-block & device ... ???

... followed by, I think, the 'Phoenix' sound-board in a small plastic-box ... ???

... followed by what looks like your black-plastic P.S.U. power-supply-unit ...

... & lastly, top far right, what I know is the audio 'low-pass-filter-board' we talked about. :thumb:



It might help to just draw a real quick & simple block-diagram of the boards in Emilias loco as well.

A simple pencil drawing of rectangle with a name in it & an arrow to the following device is fine.



:moose:



Si.



Actually, I think it's the 'transmitter-board' in the small plastic box ...

... & the 'Phoenix' sound-board is at the bottom left.

The thing at the top left, looks unconnected to me, what is it ?




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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Sat Mar 17th, 2018 09:22 pm
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Toeffelholm
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Hi Si,

will see if I can find time for drawing something. Most thinks you have identified yourself.


The device top left is just a relay serving as electrical load for the phoenix board, instead of a motor.

The Phoenix board is bottom left. The phoenix speaker exits are connected to both inputs of the impedance converter. One line-in signal from the converter (there're 2 for left and right) feeds this black "Terris" box above, what is simply the bluetooth transmitter sending the sound signal to the loco. The other line in signal feeds the low pass filter and from there the under layout speaker (blue cable on the right).

And the little plastic box contains a Rx65 controlling the phoenix board. Power supply is from a 10Ah power bank coming in at the top in the middle.

The direct connection to the bass speaker and bluetooth connection to the loco speaker showed some slight but hearable time shift in signal transmission. So I changed the direct connection of the bass speaker to a bluetooth connection as well.


Juergen



Last edited on Sat Mar 17th, 2018 09:31 pm by Toeffelholm



____________________
modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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