 | | Re: nxt + i2c sp03 Text-To-Speech?
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(...) That is pretty much exactly what I was talking about. Of course, such a chip cannot increase the available power, it can only tweak the ratio between voltage and current. So this might work for some applications, but perhaps not in this (...) (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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(...) If I'm understanding things correctly, could something like this work? (URL) appears to be able to take 2.5 - 5.5v in and give up to 5v out at up to 90mA. It would be great if it could be powered from the sensor port directly instead of having (...) (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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(...) 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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