How do you design these days?
in [Design]
|
From: Nico Coesel on 1 Jan 2010 16:13 John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >I considered the Z-wave home automation stuff, but their temp sensors >only go down to 40F and are of unknown accuracy. Plus, I wouldn't have >long-term maintainability, and remote access could be a problem. And I >wouldn't have had a project for this week. > >Here it is installed in the ski-boot closet. All I have to do is wire >up the furnace control and clean things up. > >ftp://jjlarkin.lmi.net/Auto_wired.jpg > >Needs more tie-wraps. Well, it looks neat already. Better than my floor heating controller :-) I planned to spin that into a real product but I didn't got to it yet. To busy with R&R. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico(a)nctdevpuntnl (punt=.) --------------------------------------------------------------
From: Phil Hobbs on 1 Jan 2010 16:17 On 1/1/2010 3:56 PM, Joerg wrote: > krw wrote: >> Why are pin numbers an issue? You never probe from the backside of a >> board? The spatial transform is pretty ingrained in me and I spent a >> decade doing processor design (no PCB stuff). > > > Until one fine day you have one of those Supertex high voltage chips. > Some weirdness happens on the prototype boards, must be a software > issue. It's always software. Has to be. Hmm, let's see how that looks on > the old breadboard. Grab probe, lemmee see, serial data out was, uhm, > umpteenth pin from upper left ... POP ... *PHOOMP* > How dull your life would be without fireworks, though. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: Jim Thompson on 1 Jan 2010 16:22 On Fri, 01 Jan 2010 16:17:30 -0500, Phil Hobbs <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >On 1/1/2010 3:56 PM, Joerg wrote: >> krw wrote: > >>> Why are pin numbers an issue? You never probe from the backside of a >>> board? The spatial transform is pretty ingrained in me and I spent a >>> decade doing processor design (no PCB stuff). >> >> >> Until one fine day you have one of those Supertex high voltage chips. >> Some weirdness happens on the prototype boards, must be a software >> issue. It's always software. Has to be. Hmm, let's see how that looks on >> the old breadboard. Grab probe, lemmee see, serial data out was, uhm, >> umpteenth pin from upper left ... POP ... *PHOOMP* >> > >How dull your life would be without fireworks, though. ;) > >Cheers > >Phil Hobbs Indeed! I haven't had a "fireworks" event since ~1980. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | "You cannot help the poor by destroying the rich. You cannot strengthen the weak by weakening the strong. You cannot bring about prosperity by discouraging thrift. You cannot lift the wage earner up by pulling the wage payer down. You cannot further the brotherhood of man by inciting class hatred. You cannot build character and courage by taking away people's initiative and independence. You cannot help people permanently by doing for them, what they could and should do for themselves." -Abraham Lincoln
From: Joerg on 1 Jan 2010 16:27 Jim Thompson wrote: > On Fri, 01 Jan 2010 16:17:30 -0500, Phil Hobbs > <pcdhSpamMeSenseless(a)electrooptical.net> wrote: > >> On 1/1/2010 3:56 PM, Joerg wrote: >>> krw wrote: >>>> Why are pin numbers an issue? You never probe from the backside of a >>>> board? The spatial transform is pretty ingrained in me and I spent a >>>> decade doing processor design (no PCB stuff). >>> >>> Until one fine day you have one of those Supertex high voltage chips. >>> Some weirdness happens on the prototype boards, must be a software >>> issue. It's always software. Has to be. Hmm, let's see how that looks on >>> the old breadboard. Grab probe, lemmee see, serial data out was, uhm, >>> umpteenth pin from upper left ... POP ... *PHOOMP* >>> >> How dull your life would be without fireworks, though. ;) >> >> Cheers >> >> Phil Hobbs > > Indeed! I haven't had a "fireworks" event since ~1980. > That's because you are designing chips with your computation machine. Having your hands inside a unit with a monstrous transformer that let's off an evil TUNGGGG when turned on is a different ballgame :-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 1 Jan 2010 16:35
On Fri, 01 Jan 2010 13:27:12 -0800, Joerg <invalid(a)invalid.invalid> wrote: >Jim Thompson wrote: >> On Fri, 01 Jan 2010 16:17:30 -0500, Phil Hobbs >> <pcdhSpamMeSenseless(a)electrooptical.net> wrote: >> >>> On 1/1/2010 3:56 PM, Joerg wrote: >>>> krw wrote: >>>>> Why are pin numbers an issue? You never probe from the backside of a >>>>> board? The spatial transform is pretty ingrained in me and I spent a >>>>> decade doing processor design (no PCB stuff). >>>> >>>> Until one fine day you have one of those Supertex high voltage chips. >>>> Some weirdness happens on the prototype boards, must be a software >>>> issue. It's always software. Has to be. Hmm, let's see how that looks on >>>> the old breadboard. Grab probe, lemmee see, serial data out was, uhm, >>>> umpteenth pin from upper left ... POP ... *PHOOMP* >>>> >>> How dull your life would be without fireworks, though. ;) >>> >>> Cheers >>> >>> Phil Hobbs >> >> Indeed! I haven't had a "fireworks" event since ~1980. >> > >That's because you are designing chips with your computation machine. >Having your hands inside a unit with a monstrous transformer that let's >off an evil TUNGGGG when turned on is a different ballgame :-) (1) I don't go sticking my fingers where I can't see ;-) (2) I designed discretes until around 1995, no flames. (3) And no reports of flaming failures of systems with my chips, since 1980... and the 1980 event wasn't even a final chip, it was a breadboard... but it WAS a doozy ;-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | "You cannot help the poor by destroying the rich. You cannot strengthen the weak by weakening the strong. You cannot bring about prosperity by discouraging thrift. You cannot lift the wage earner up by pulling the wage payer down. You cannot further the brotherhood of man by inciting class hatred. You cannot build character and courage by taking away people's initiative and independence. You cannot help people permanently by doing for them, what they could and should do for themselves." -Abraham Lincoln |