Like the Arduino/Atmel option.. Try a PIC16F877, 8 10bit A/D inputs, and serial (UART/MSSP) IO too. (Have to admit, I can't remember if the serial IO will "knock out" any of the A/D input pins.)
Prototype boards with RS232 drivers, Power reg, Xtal etc, from Olimex, among others. Free software development and programming tools widely available too. Some people "get on" with PIC's, some do not. Have to admit, I struggle at times... Conventional PIC's (12 and 16 series) are very much RISC in their instruction set, the later 18 series are more suited to compiled high level code, having a more "conventional" non paged address space. Not that there isn't a wealth of 'C' and even some Pascal compilers etc for the 12 bit core devices. I forget the exact part number, but there is at least one 18 series PIC (I think there are several) that has built in USB device support, also at least one with a network interface (but you still need the network IO hardware) and a wealth of fast analogue IO facilities. Someone on a well known web auction site was flogging small boards pre programmed to work as a crude 'scope. The PC source code (VB) was available too. Something very much like this: Item #280377761091 You know where to look. Atmel's AVR series chips are good products too, likewise development tools are widely available, and I believe the core CPU instruction set (Mnemonics at least) resembles the old Intel 805x stuff? So could be somewhat easier for some of us older types to wrap the grey cell around. Unless you have burning desire to burn money with the commercial instrument vendors, or you need something "Fast" (as in "I want it NOW!") I'm sure there are many more single chip MCU's out there that will also do the job for you. TI's MSP-430 series for example. Covering all of these, take a look at the Olimex site:- www.olimex.com Select Development boards, and explore from there. I'm sure you'll get other ideas... Their prices are good, and they ship fast. Regards. Dave Baxter. > -----Original Message----- > > Message: 1 > Date: Thu, 30 Jul 2009 21:00:51 -0700 > From: Matt Ettus <boysc...@gmail.com> > Subject: [time-nuts] Multiple Voltage monitoring > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Message-ID: > <ad9f78230907302100t340ba0c8ta6f4f85f63bab...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Does anyone have a good solution for monitoring 4-8 different > voltages at the same time? I only need a sample rate around > 1-2 Hz, but would need GPIB, serial, or ethernet support with > protocol documentation. > > Any help identifying a solution other than 8 voltmeters would > be much appreciated. > > Thanks, > Matt > > > > ------------------------------ > > Message: 6 > Date: Fri, 31 Jul 2009 04:49:53 +0000 (GMT) > From: Flemming Larsen <oz...@yahoo.dk> > Subject: Re: [time-nuts] Multiple Voltage monitoring > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Message-ID: <461624.29668...@web24608.mail.ird.yahoo.com> > Content-Type: text/plain; charset=iso-8859-1 > > A good application for the Sanguino board? > ? > ? www.sanguino.cc > ? > -- FL > ? > > > >> > >> DC, 0 to 6V, 10mV or better resolution. > >> > >> Thanks, > >> Matt > >> > >> _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.