A few questions about SOUND devices

Macore

First the SoundPAL - Nice device, plays good music... How can I turn the Volume down??

Second, how or where can I get or build a device to make Creature and/or Robotic Noises (Cheeps, Purrrs, R2-D2, etc.)?

Third the EMIC TTS Module, I am using a RadioShack miniature 8ohm 350mW speaker and even at 7 the volume is too low. Can somebody point me to a better miniature speaker or a simple to construct amplifier circuit I could build?

I am trying to build a sort of cat and mouse demonstration with 2 BOE-BOTS. Its been years since I did much with electronics, I am by profession a programmer. The BOE-BOTS are running fine and I am playing with various sensors (Ping, etc.) to get the behaviors I want find tuned. Just having a little trouble with the Sound stuff.

Thanks A Lot!

- Transformers Rock! -

mctrivia

check out the schematic for the prop dev board. has a simple amplifier circuit and d to a circuit. you can use a prop to generate any sound you want or play wav files easily.

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propmod_us and propmod_1x1 are in stock. Only $30. PCB available for $5

Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

mctrivia

check bottom left corner:

http://www.parallax.com/Portals/0/Downloads/docs/prod/prop/PropDemoDschem.pdf

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propmod_us and propmod_1x1 are in stock. Only $30. PCB available for $5

Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

Need to upload large images or movies for use in the forum. you can do so at uploader.propmodule.com for free.

Phil Pilgrim (PhiPi)

One way to turn the volume down on the SoundPAL is to remove the "sonic resonator" (the clear shrink tube snorkel). If that doesn't diminish it enough, some masking tape over the little hole will certanly do the trick.

-Phil

Prettybird

· The LM 386 is s good inexpensive way to amplfy sound. I made a prototype around a month ago and found a pull up 100k resistor on the input helps alot with unwanted noise.. Here is an interesting program I got from the forum. It has a few neat noises and can be easily modified. Good luck.



The more you learn the more you find you don't know. It is neverending. Confucous 550 BC

Macore

-- Thanks for all you replies!
Should give me some ideas

Macore

Prettybird said...
The LM 386 is s good inexpensive way to amplfy sound. I made a prototype around a month ago and found a pull up 100k resistor on the input helps alot with unwanted noise.. Here is an interesting program I got from the forum. It has a few neat noises and can be easily modified. Good luck.



The more you learn the more you find you don't know. It is neverending. Confucous 550 BC

I Located the LM386 as specified and I wired it up using the Typical Applications circuit. When I try to hook the AOUT pin of the EMIC to the Vin of the Amp circuit I get no sound. When I hook the SP+ pin to the Vin I get amplified sound but it is distorted and extremely hard to decipher. The SP- pin makes no difference whether I hook it to ground or leave it floating.

I wasn't able to get the .05uF or 250uF electrolyte from our local Radio Shack and .047 and 220 were the closest ones. These are within a 20% tolerance... Is this good enough? Could this be causing my distortion or should I look elsewhere?

Maybe you could post your circuit or send it to me as a PM or email it to me?

- Thanks for any help! -