[wxsig] SOurce for 1-wire sensors these days
Will sbm at ottix.netMon Nov 16 21:51:50 UTC 2009
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Thanks John. I have also double-checked for cold solder joints and proper IC orientation. I even went to the trouble of removing capacitors and such to make sure they were operating properly. Next is the 78L05 replacement to rule that part out - or in. On Sun, 15 Nov 2009, John Bennett wrote: > OK, a few things to check. > > 1. Be certain the regulator is installed per the diagram on the silkscreen. > If it's backwards, you will have the problem described. If this is the case, > it needs to be replaced. > > 2. Be sure the tantalum caps just adjacent to the regulator are installed > correctly. These are polarized. If installed backwards, the mode is normally > to short. This would overload the regulator and cause the overheating. If > this is the cause, the regulator *could* be OK. > > 3. Check to be certain the ICs are installed correctly. If one is installed > backwards, it could short Vcc causing the regulator to overheat. > > Let me know how this goes. > > Will wrote: >> >> >> On Sun, 15 Nov 2009, John Bennett wrote: >> >>> Did it work at one time? >> >> First build actually, just started assembly last week. I think it may even >> be one of the last ones TAPR sold. >> >>> >>> Will wrote: >>>> >>>> On Sun, 15 Nov 2009, John Bennett wrote: >>>> >>>>> Just what kind of problem are you having with the X1W-1 board? >>>> >>>> No +5V from the 78L05. It gets very hot, but I don't give it much more >>>> time to diagnose further. I believe I have narrowed it down to just the >>>> 78L05, so it's a matter of rifling through my stash getting out one of >>>> the spares. >>>> >>>>> >>>>> Will wrote: >>>>>> >>>>>> Hi folks, >>>>>> Been a while since I last saw a post on this SIG, so I thought I'd >>>>>> ask a question here. I've been toiling with my X1W-1 board (looks like >>>>>> a bad part someplace) and got to thinking again about 1-Wire weather >>>>>> sesnors and instruments. I mosied on over to the AAG Electronica >>>>>> website, and after going through both Firefox (and IE) I could not find >>>>>> some of the sensors that I bought a ways back. >>>>>> >>>>>> So question to everyone on the SIG: Anyone seen other places that >>>>>> sell 1-Wire weather components, compatible to not just the X1W-1 (and >>>>>> friends) but also with the T238+? >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Bill >>>>>> >>>>>> _______________________________________________ >>>>>> wxsig mailing list >>>>>> wxsig at tapr.org >>>>>> https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >>>>>> >>>>> >>>>> _______________________________________________ >>>>> wxsig mailing list >>>>> wxsig at tapr.org >>>>> https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >>>>> >>>> >>>> _______________________________________________ >>>> wxsig mailing list >>>> wxsig at tapr.org >>>> https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >>>> >>> >>> _______________________________________________ >>> wxsig mailing list >>> wxsig at tapr.org >>> https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >>> >> >> _______________________________________________ >> wxsig mailing list >> wxsig at tapr.org >> https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >> > > _______________________________________________ > wxsig mailing list > wxsig at tapr.org > https://www.tapr.org/cgi-bin/mailman/listinfo/wxsig >
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