On Monday, April 16, 2012 10:23:30 AM Peter Homann did opine: > An BoB without opto-isolation will give you the same 24mA rail to rail > output. >
You should refer to it by the URL, is this it? <http://www.homanndesigns.com/store/index.php?main_page=product_info&cPath=22&products_id=59> That is not too bad a price either. And I may have looked at it before, but because it comes from Australia, I have no clue what it would cost _me_ here in WV, USA. When I first got interested in cnc, I bought some i/o cards that were being advertised at $39 USD, each giving 72 pins of programmable i/o from the 3 82c55's on each card. They were advertised as $39 USD, but when shipped were billed in AUD at that price. By the time freight was added, I wound up paying about $90 USD each for the 3 cards I ordered. :( Then it turned out I had to write my own driver (the claim was made that the driver was on the accompanying cd, it wasn't & emails were ignored), and eventually I actually did have it turning motors, very slowly and roughly due to my drivers non-access in real time. An extreme case of latency. It was about that time that I discovered 2 things, xylotex, and emc. I have since bought 3 of those and burned them up despite far more cooling than they should need, the last one, a 4 by, had a 4" fan in each end of a wooden box, old psu fans running on about 19 volts so they really did move lots of air & also made lots of noise. Lasted about a year before the magic smoke came out at powerup, again. > I just didn't see a need to pay for something that's not needed. Neither do I Peter, so we agree on that point. > But then, it's your choice. :) Known pricing, and typically 3 day delivery by USPO was the deciding factor in my case. I'm not fond of 2x surprises on C.O.D. labels, nor of 6-8 week delivery times. None of that is your fault of course. If I can't make that speed controller that I'll have in the next day or so, work, then one of yours is likely to be the next one tested. Do you have a US based stocking distributor? I see the one I would probably use is out of stock on your web page. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> He who steps on others to reach the top has good balance. ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
