On Tue, Jul 15, 2003 at 11:49:27AM -0700, Matt Schalit wrote: > > I suppose this could go on leaf-hardware, > but I was wondering who's added a DAC to > their box?
Not really. (You *do* mean Digital-Analog Converter, right?) > It'd seem like a decent place to launch a few > cron jobs from. Indeed. > Just patch in a unity gain > op-amp for some bigtime imput impedence, and > you get a cheap buffer you can blow if you make > a mistake (how much is a 411 anyway?), plus you > get a good current source for your D/A control > (of your sprinklers or whatever). I've not gone into controlling anything analog, but I *have* built a system to open and close my blinds. I don't know if that's anywhere near what you're thinking, but in any case the (pretty severely outdated) site is at; http://bund.dk/blinder > I suppose X10 is more popular than doing this > stuff from scratch.... Still, if you're not > building, you're crumbling :) I never found out what x10 actually *is*, but it kept coming up while I was researching the electronics parts of my contraption... I just picked up development a couple of days ago. Basically the bit that drives the stepper motor is a script that pushes out bit-sequences of the parallelport. But being a script (and not particularly well written, at that) it makes for some jerky motion of the motor, which I think is in part responsible for the two mechanical failures it has suffered in the year it's been running. (Plastic fatique). I'm hoping to get some smoother action by converting that script to C, and taking the opportunity to add a couple of features, such as making sure that there can be only one instance of the program running at a time a.s.o. Cheers, Jon Clausen -- If we can't be free, at least we can be cheap! ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 ------------------------------------------------------------------------ leaf-user mailing list: [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
