Subject:
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RE: nxt + i2c sp03 Text-To-Speech?
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Tue, 5 Dec 2006 07:14:26 GMT
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Reply-To:
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<DICKSWAN@SBCGLOBALihatespam.NET>
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Viewed:
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12754 times
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The NXT can also optionally apply 9V to I2C sensors on the same
input/wire that is used for reading the analog values. There's a flag to
set this up. I know it is accessible in RobotC and I think you should
also be able to set it up via NBC.
SO what you would do is drop the 9V to 5V via a voltage regulator and
some kind of filter capacitor. If the text-to-speech chip draws low
enough current you won't need a heat sink.
If you post the current draw on the TTS chip, likely someone will
comment on a simple circuit for dropping the voltage.
I'd also do a little more searching for other TTS chips that might work
on the lower voltage.. There was a nice article in either "Nuts and
Volts" or "Servo" magazine sometime in the last year on a TTS chip
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Message has 2 Replies:
 | | Re: nxt + i2c sp03 Text-To-Speech?
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| (...) That would be the LOWSPEED_9V flag? (...) I just might do that. (...) The chip used in the book I have is the SpeakJet (URL) It's a LOT cheaper than the sp03, however, it uses a serial interface and would be a lot more complicated. I'd have to (...) (17 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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Message is in Reply To:
| | nxt + i2c sp03 Text-To-Speech?
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| I'm a software guy, not a hardware guy. I have very little experience designing circuits. To show how little I know, I'm actually reading through Electronics Projects for Dummies at the moment. ;) Well in this book they describe a simple (...) (17 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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