>-----Original Message----- >From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] >Sent: 24 October 2006 17:06 >To: Microcontroller discussion list - Public. >Subject: Re: [EE] Cheap and cheerful data aquisition? > > > > >> Does anyone know of a *cheap* data aquisistion unit, either >serial or >> USB >with 4 or more (idealy 8) analog inputs? Doesn't have to be >particulary fast or high resoltuion (100ms sampling, 10bit >would be fine). Digital inputs/outputs useful but not >mandatory. Don't mind a kit or unhoused PCB etc. as long as >there is host sofwtare available. I know I could knock up >something with a PIC etc. but I just don't really have to time >to do that right know, though I might have to if I can't find >anything suitable. >> > >Do you need 8 digital channels or 8 analog channels? 4 analog inputs required, 8 would be useful. Digital I/O not required. > >btw, 10 bits __is__ high resolution, anything above >or equal to 6 bits is quite good resolution. Not in my language! 12 bit ADC/DACs is the minimum I use in my job, and 16bits is more common. Even the humble PIC has a 10bit ADC built into many variants. If you want 100's of megasamples/second then 6 bit converters are widely used, but for slow speed stuff it's hard to find much under 8 bit these days. Found a few yucky parallel port modules using a bit-bashed SPI ADC, but need serial or USB as a laptop will be used to do the logging, and bit-bashing over a USB/Parallel adapter is most unlikely to work. Regards Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist