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.
[*]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
UNIX Systems Manager,
Oxford Physics Practical Course http://nextstep.sdf-eu.org
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