aswin0 wrote:- The sensor needs 3.3V (3.6Max), the NXT sensor port supplies 4.3V. This is too much so I need to get the voltage down. I read about voltage regulators, but they need about 1.5V overhead, giving 4.8V as minimum for input. This is more than the NXT supplies. So how do I provide the sensor with some clean voltage?
- The sensor implements high speed I2C, 400 kb/s. Will it run on the NXT that only has 9600 b/s?
- Provided I have some suitable power for the NXT, can I just connect the digital pins of the NXT with those of the sensor, or do I need some extra components between the two?
mightor wrote:- Provided I have some suitable power for the NXT, can I just connect the digital pins of the NXT with those of the sensor, or do I need some extra components between the two?
Get one of these: http://www.sparkfun.com/products/8745 They're logic level shifters and work very nicely.
nxtreme wrote:Don't the data lines run at 3.3V logic? Or am I mistaken? I do remember that somebody on the NXTasy forums said that when interfacing with 3.3V sensors you could just substitute a 47K pullup for the 82K and connect the data lines directly. Maybe I'm mis-remembering something...
nxtreme wrote:Sparkfun also just released a new 9DOF "sensor stick". It's quite expensive but I'm thinking it'd be rather fun to plop it on a NXT and take to an amusement park.
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