 | | Re: nxt + i2c sp03 Text-To-Speech?
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(...) I'd say its worth a try from the 4.3v supply from the NXT. I note that the SP03 spec. says it has a 3v regulator onboard, so its not really running from 5v anyhow. The I2C signals are open drain, so they should be ok unless their inputs won't (...) (18 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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| | Re: nxt + i2c sp03 Text-To-Speech?
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(...) It sounds like the NXT probably doesn't have enough power available to run that chip, but you might look at using a BUC (Boost-Up Converter) component to bring the 4.3V supply up to a higher level? I've only been peripherally involved with (...) (18 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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| | Re: nxt + i2c sp03 Text-To-Speech?
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(...) Yes, but unfortunately the 9V sensor supply is limited to 15mA just like the RCX sensor supply. Not easy to power a module that consumes 80mA... Philo (18 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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| | 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 (...) (18 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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| | RE: nxt + i2c sp03 Text-To-Speech?
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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 (...) (18 years ago, 5-Dec-06, to lugnet.robotics.nxt)
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