electronic game caller....

[herbeapuce]

Hi.
my intention is to use my MP3 as the audio source, feeding a small 12V amplifier through the 3.5mm headphone jack. I have salvaged a horn speaker that I will use for the speaker.
I am debating if I can use a small remote control switch for cheap...that is my second question here...

now I would like to get my part form dx express because they ship for free in Canada....

I have a few questions for you experts ...

about this amplifire: http://dx.com/p/y148-audio-amplifier-module-93121

A- would it serve my needs ?
B- can you tell me, since I don't see any instruction online, where would I plug ( solder)
1- my Left, Right, and Ground from my stereo sound source ( MP3 and 3.5 male to male cut at one end )
2- Where to plug (solder) my 12 V , positif and negatif ? would I connect the + where it's written V on the circuit, and the Negatif where it's written Grd ?
3- Where to connect my single speaker please ?

anything I should know that would be a deal breaker for my choice of amplifier ?

also I am looking at a remote switch control to operate my E caller. I thought of this one : https://dx.com/p/mtdz006-rf-1-channel-wireless-remote-controller-switch-module-green-blue-153147

it is my believe that this switch will operate the relay as long as the switch is pressed down, but will open the relay the second the switch is released. is there a way to wire the receiver so the relay stay closed until the switch is pressed again ? in other words, I want: one click = relay closed, next click= relay opens . I don't want one click= relay closed, release click = relay opens... I hope you understand what I am trying to explain. English came late in my life...

I will wire that remote switch to my power supply,( and leave the mp3 on all the time) as I don't think I have the knowledge to attached it to my MP3 device ( it is so small...) what do you think? http://www.sandisk.com/products/music-video-players/clip-plus-mp3-player/

thank you for your help. my electronic knowledge is very limited. I do know how to solder.

stef.

 

[Harald Kapp]

A) I think yes.
B) See the "datasheet", it's on the website you linked.
1 - Connector J3: L_in = right input, R_in = left input, center = ground (Note that according to the text on the website L and R inputs are exchanged).
2 - V+ = 12V, Gnd = ground of the 12V supply
3 - This is a stereo amplifier. It has two speaker outputs. If you want to convert the stereo output from your MP3 player to mono, place a series resistor of 1kOhm between each of the MP3 player's outputs (1k in series with R, ik in series with L). Connect the other end of the resistors to just one input of the amplifier. Use the corresponding output (L+/L- or R+/R-) to connect the speaker. In the following example I used L_In so R+/R- would be the corresponding output.

The remote control you're looking comes with 3 control modes. Unfortunately the website doesn't tell anything about these modes and how to use them. Other customers have complained about missing information about these modules, too. Unless you are willing and able to work based on a bit of trial and error, this module may not be your best choice. But maybe someone else on this forum knows the module and can help?

Leaving the MP3 player on at all times will drain the battery rather quickly. Also, how are you going to trigger the MP3 player using the remote control? Probably an inexpensice voice module is a better idea for your project. Your favorite site offers several such modules, among them this one. It looks like one module I have used just recently. The datasheet and the software to convert teh sound into the necessary AD4 format can be found on this website (German!) The datasheet is under "Datenblatt (klick)", the software right below it.
You will need an additional 12V to 3.3V voltage regulator to supply the sound module (it operates on 2.5V...3.3V). And, since the rf module has only one channel/relay you may need to generate a trigger signal from the rf module to the sound module to start playback.

 

[herbeapuce]

Leaving the MP3 player on at all times will drain the battery rather quickly. Also, how are you going to trigger the MP3 player using the remote control? Probably an inexpensice voice module is a better idea for your project. Your favorite site offers several such modules, among them this one. It looks like one module I have used just recently. The datasheet and the software to convert teh sound into the necessary AD4 format can be found on this website (German!) The datasheet is under "Datenblatt (klick)", the software right below it.
You will need an additional 12V to 3.3V voltage regulator to supply the sound module (it operates on 2.5V...3.3V). And, since the rf module has only one channel/relay you may need to generate a trigger signal from the rf module to the sound module to start playback.

Hi Harald and thank you very much for such good help. I am very happy I found this place. this is the 2nd time I ask a question here and each time, I get help right away.

my intention was to manually turn on the MP3, then walk away, and let it on during the duration of my hunt, usually no more than 4 hours. so the audio track would play but would not be amplified until the remote switch would feed current to the amplifier. I was hoping my mp3 device would last at least 4 hours. otherwise I could probably connect it to more power...
Ideally the remote would be at 100 meters from the mp3/amp/speaker.
I appreciate you pointed out a voice module that might help me , but I know my limitations and I can not go there ... transforming a voice command into a signal is very intimidating for my little E brain...

and thank you for showing me a way to turn stereo into mono.... didn't know that.

time to buy soon and experiment.
Best to you
stef

 

[Harald Kapp]

transforming a voice command into a signal is very intimidating for my little E brain

You can well go by the way you have chosen.

However, I may have made the idea of the voice module not so clear: It is not for converting a voice command into a signal. The voice module plays back a pre-recorded sound, just like the MP3 player does. You record any sound on a PC into a WAV or MP3 file. The software supplied for the module converts that file into an AD4 file. You put that AD4 file onto the micro SD card and put the card back into the voice module. Now, when you trigger the module (low-pulse on a trigger input) it will play back the sound.

Anyway, good luck with your project.

 

[herbeapuce]

thank you . I had doubts I was making a fool of myself....hehe.
once again thanks for your help and Merry Christmas.