On Monday 04 April 2016 01:52:42 Nicklas Karlsson wrote: > > > > > ISO7421 > > > > > > > > Now thats sweet, and a heck of a lot better thought out than the > > > > last such chip I looked at a decade ago. Needs a 4 wire cable > > > > from each direction, but I don't see as that as a problem other > > > > than stealing the ground and 3.3 or 5 volts to run its side of > > > > it at both ends. > > > > > > > > That should indeed sove the noise problem. The pcb requires a > > > > slightly different layout of putting the power on the center > > > > layers, so the best bet is to look around and see if someone > > > > might have it all boxed up and ready to connect. > > > > > > > > Were you able to find such a ready-made critter? If so where? > > > > > > No I made my own circuit board, two layer. SO footprint should not > > > be to hard to solder there are small prototype boards or similar > > > on Farnell. > > > > > > http://se.farnell.com/roth-elektronik/re932-01/pcb-adaptor-smd-so- > > >8-20 -5mmx8mm/dp/1426169 > > > http://se.farnell.com/roth-elektronik/re932-03/adaptor-smd-so-14-1 > > >-27m m/dp/1426171 > > > http://se.farnell.com/roth-elektronik/re932-02/adaptor-smd-so-8w-1 > > >-27m m/dp/1426170 > > > http://se.farnell.com/roth-elektronik/re932-01st/multi-adapter-11- > > >5x16 mm-soic-8/dp/2292022 > > > > > > I do not have time to check if footprint is correct. > > > > Immaterial as you wouls wire to suit, but all of them are missing a > > place to put the recommended supply rail bypassing. And extra plated > > thru-hole in each runner to the terminal would be nice. > > > > But who is Farnell on this "west side" of the pond? Or are they > > even affiliated with anybody in the US? > > Maybe it is newark http://www.newark.com/ otherwise I think digikey > may be closer to you.
Maybe. OTOH, I can probably knock up something in eagle or geda/pcb, and carve it on my machine by the time UPS could make a drop here. Those pictured boards Farnell shows me are quite simple, and adding another thru-hole for the supply bypassing those chips ought to have would be easy enough. If I have a problem I might consider it, but this VFD is RS-232, if that option is plugged in. I didn't find it when I had it apart OTOH, somebody, Mesa or Pico, maybe PMDX really ought to knock up something like that so we'd have a ready-made plug-n-play solution we could buy at a reasonable price. Potential product suggestion guys. > ---------------------------------------------------------------------- >-------- _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
