On Sat, Nov 19, 2011 at 11:06 PM, Mohan Sundaram <[email protected]> wrote: > On Sat, Nov 19, 2011 at 10:51 PM, 0 <[email protected]> wrote: >>>> >>>> It would be a good thing to take cheap displays, make a USB to SPI >>>> convertor board, a bay mountable fixture possibly with buttons. >>>> Overall cost budget should be pegged at $12-13 which is achievable. >>>> Typical components and prices are LDO $1.5 ( 5V to 3.3V), a >>>> microcontroller with a USB device (PIC or MSP $1.5) and board would >>>> cost approx $1 with passives. >>>> >>> >>> Yes. Sub $15 is my target too. >>> >> >> I am definitely buying one! >> >> Do you guys know what will be the power consumption like ? The display >> is the one that worries me. > > Meant for headless PCs powered from the mains and so power should not > be a worry. Nevertheless, i think under 30milliamps budgeting > 25milliamps for the display.
I read the datasheet wrong. 16x2 LCD display says max 2.35mA. uC takes about 250microamps per Khz thus 2mA for 8Khz. Maybe 10mA would be the max. -- Mohan Sundaram _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
