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1  Using Arduino / Project Guidance / Re: animatronic on: April 10, 2011, 08:29:27 am
hi, i was trying to same sort of stuff, but i am not a sculpture and failed to do the mask.. i am envious:p. anyway later done just on a plastic head with eyes and chin only.. i wish you all luck and want to see the result..

you asked whether you need another source for power, you will need that because one servo in my case was pulling enough current and when i connected two arduino was resetting itself.. you will need i guess another source of power source then just send the signals via arduino.. i guess servo controllers should deal with that as well .
2  Using Arduino / Project Guidance / connecting many sensors- feasibility on: April 10, 2011, 08:08:12 am
Hey!
i have to decide whether what i want to do is possible and i need some guidance. i need whether anyone did that or have examples that it is done.
i want to connect approximately 256 sensors to arduino. i tought i can do that with  multi layered muxes, but i have concerns about
- driving the 256 sensors, how can i manage the current and the volt? those sensors i have seen was generally connected as alone to arduino.
- reading 256 sensors one by one , do i loose real time efficieny
- all the sensors have analog outputs, require approx 5V VCC.
- is it possible to demux the volt too? has anyone done that ? or would it be not feasibel since after you applythe volt it iwill require a set up time to sense.. i mean i can not probably just apply the volt and try to read the output ?
- is there examples for this , a reliable chip which already deals with current volt output selection and you just connect the sensors to that chip

 input is blow, air flow on a surface.. i want to know whichpart of the surface is blown into.. open to suggestions.
and i will also put alcohol sensor sparingly to detect alcohol in blood.
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