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DVM/DAQ and Mac
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DVM/DAQ and Mac

</lurk>
Hi,

Does anyone know of a project to build a digital voltmeter that can interface with a modern Mac, eg via USB? I'd be more interested in a "here's the schematic, go build" solution than a black box, as it'd be nice to have a flexible hackable object (i.e. so that I don't have to buy a digital ammeter in the future :->). The ones I've seen through websearching are both exclusively RS232[*] and exclusively PICBASIC; I believe that PICBASIC is Windoze-only? I'd need to be able to do the whole bit, from blowing the EPROM to collecting the data, on G4/G5 Macs [although some of the development work could be done on SPARC/Solaris machines, if RS232 is absolutely required].

If anyone knows of a nearly-what-I-want project, such as "this is how you'd create a Z80 board that can control arbitrary data acquisition device, and here's how you plug it into your Mac to read the data" then this would be a very good start; I could use my limited but non-zero hardware-fu (and the local technicians, with their much greater knowledge) to create the voltage reading and ADC parts of the device.

Many thanks,

Graham.

[*]Which in itself may not be so much of a problem as RS232-USB adaptors are available; anyone have any thoughts on the suitability of this?
--
Graham Lee
UNIX Systems Manager,
Oxford Physics Practical Course
http://nextstep.sdf-eu.org

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