let's make... sound!
By Pasquale
2008-07-03 21:29
2008-07-03 21:29
hi.. I've just take a little speaker from a radio. there are 2 little cables, one for ground, pin for the other.. when I connect them there's a noise sound that stops when there are properly connect.. I've connect it on pin 1. but when I upload some code.. like
main: let b0=b0+1
sound 1,(b0,50)
goto main
nothing happen.. can anyone help please? ._.
http://img123.imageshack.us/my.php?image=speakergj9.jpg
there is a little mistake on this photo... ground is pin and pin is ground ... ground is on left.. I know.. xD .. it doesn't work T_T T_T
I need a picture to make
I need a picture to make sure all is right.
And Labels ("Main:") should always be on a line by themselves, nothing after ":"
And I would start with
sound 1,(b0,5)
(5 instead of 50)
Hi Pasquale Are you using
Hi Pasquale
Are you using the darlington on the output? I don't think that would work with a speaker. You would need to take output from the pin holes between the picaxe and the darlington. If youre not using the darlington, and have a jumper in where the dalington goes, I don't know whats wrong.
Ant
Wrong! you can / should use
Ahh, crap..... I just took
Ahh, crap..... I just took mine out from the start as I'm not driving anything that needs high current, and assumed you wouldn't be able to get the frequency thru it. But know I think about of cousre you can, its like an amp.
Ignore everything I've ever said. :)
Ant
if I use the darlington I
I've posted some pictures..
I can't make out the photos,
I can't make out the photos, but is it hooked up like this?
this is my way .. but I've
this is my way .. but I've triend many other
http://img93.imageshack.us/my.php?image=speaker2tq7.jpg
Hi Pasquale Then row of
Hi Pasquale
Then row of pins you have the black wire on is the negative (gnd) rail, and the red one is the positive rail (V). so hooked up like this is like connecting the speaker directly to the battery. Unfortuanatly that might mean the speaker is fried.
try like this, the black one is to negative (ground) the red one is to the output from picaxe
Picaxe R not Us
Dunno anything at all about the picaxe hardware. (I suppose I should learn, but it seems like a backward step.)
One thing I would say, though: The speaker (is it ACTUALLY a speaker or is it a peizo sounder?) is probably 8ohm. Your pic is 5V. V=IR. So your current might be of the order of 5/8 = 625mA. The PIC output can oly sink 25mA. You'll need a drive transistor. (I suppose this is the darlington mentioned above.)
HOWEVER, bear in mind that the tranny will be configured to pull up or down the input of the speaker. If it's configured to pull down (as would be sensible, since transistors tend to sink more current than they source) then there is noting to pull up the input to the speaker.
In effect, it seems possible that you have a system where one side is connected to ground and the other is being rapidly connected from ground to nothing by the PIC.
Can you validate any of this by looking at the user manual for picaxe?
success!!!I've tried to
success!!!
I've tried to connect it with the darlington and there was a very very.. very little sound (must close the ear on the speaker). than I took a transistor (random xD) from the radio and put it in. and it works. xD.. but may I need to take volume up :/ ... sorry for my english ._. thanks all. here's the correct way to connect
http://img75.imageshack.us/my.php?image=speaker21nj8.jpg
well done, good to hear its
well done, good to hear its workin.
Crazy setup - cool that it
Crazy setup - cool that it works, bu way over done IMHO :)
It must be the speaker.. Try another, it is just adding it to the digital output, straight up, after the darlington - completely normal business.. And you will get sound!
With some speakers, you will even get
EXTREMELY LOUD SOOUUNNNDDSS! BEEEEP!!
but is there a way (maybe
If you want more sounds
If you want more sounds playing at the same tme with this board, you will have to get as many boards as you's like simultanious sounds :)
Yes, you can record line out from your PC. However, make sure to turn the volume almost all the way down.
actually i didn't want to
actually i didn't want to play simultaneous sounds, but just different sounds i can play at different times (pre recorded and non-volatile). but i guess the same idea applies... thank you :)
PS: it doesn't have to necessarily be that board. is there any other cheap( :D ) option?
(No subject)
VMusic2 MP3 module
isn't there another
isn't there another solution? the vmusic2 module is both quite big and quite expensive. I have seen that other projects use ISD sound boards which have some kind of "adressing" which i don't know what it is, but it sounds like playing the audio a certain spot.
This way you could use a single ISD chip to play different sounds.
EG: i record 3 sounds, the 1° is starts at t=0s, the second one starts at t=30s. If i want to play the second sound i "adress" the ISD to 30 seconds. Got what i mean?