[wxsig] wind sensor prob
William Beals will at beals5.comFri Mar 2 04:29:35 UTC 2007
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John: If there is a DS1820 anywhere on the network, I should be able to detect it. To get the humidity sensor to also be your temperature sensor you have to "re-discover" the humidity sensor again and when you do, the T238 should ask you if you want its temperature sensor to be the main one. I must confess I've only tested this with a DS1920 on the 1-wire network, so maybe I missed something. Let me know if the sensor re-discovery fixes things. will -----Original Message----- From: wxsig-bounces at lists.tapr.org [mailto:wxsig-bounces at lists.tapr.org] On Behalf Of John Vause Sent: Thursday, March 01, 2007 12:53 PM To: wn0x at earthlink.net; TAPR Weather Station SIG Mailing List Subject: Re: [wxsig] wind sensor prob I'm not using the X1W. I have the original humidity sensor that Dallas Semi sold. wn0x at earthlink.net wrote: > John, > > Is the "T" shunt in place on the X1W? When setting up the T238 for temperature I completely removed my wind sensor from the network and left the X1W in place. The T238 correctly identified the DS18S20 on the X1W. I thought the firmware listed temperature sensors if it saw more than one. > > Rich > > > -----Original Message----- >> From: John Vause <jdv at iglou.com> >> Sent: Mar 1, 2007 9:07 AM >> To: TAPR Weather Station SIG Mailing List <wxsig at lists.tapr.org> >> Subject: Re: [wxsig] wind sensor prob >> >> I just tried this (had the wind sensor down to replace a wind >> direction reed switch). >> Once I unsoldered the temp sensor on the wind sensor board I could >> not set any temp sensor in the T238 (1.15.8 firmware) setup including >> the temp sensor on the humidity sensor board. >> >> William Beals wrote: >>> Rich: >>> >>> I don't think there's harm in leaving the sensor there. For the >>> times it really needs to digitize the temperature I do put the >>> 1-wire bus in the "strong drive" mode per the device spec, so the only extra power should be >>> for the 1-wire interface itself, not the temperature sensor. It would >>> certainly cut down on confusion though to see only one sensor! >>> >>> will >>> >>> -----Original Message----- >>> From: wxsig-bounces at lists.tapr.org >>> [mailto:wxsig-bounces at lists.tapr.org] On Behalf Of >>> wn0x at earthlink.net >>> Sent: Wednesday, February 28, 2007 4:05 PM >>> To: TAPR Weather Station SIG Mailing List >>> Subject: RE: [wxsig] wind sensor prob >>> >>> John, >>> >>> I noticed that my error rate dropped to almost nothing once I >>> supplied 5 volts to my X1W Humidity/Temp sensor and used it for temperature. >>> >>> Will, Do you think there would be any value to removing the Temp >>> sensor from the weather head unit if not used? Does it draw power >>> even if not queried for temperature? >>> >>> Rich wn0x/ap006 >>> >>> -----Original Message----- >>>> From: John Yost <k3yjp at yahoo.com> >>>> Sent: Feb 28, 2007 4:25 PM >>>> To: TAPR Weather Station SIG Mailing List <wxsig at lists.tapr.org> >>>> Subject: RE: [wxsig] wind sensor prob >>>> >>>> Will: >>>> >>>> Good News. It works! >>>> >>>> Don't know for sure what the problem was but temp, speed and >>>> direction are working fine. I am suppling the +5 to the temp >>>> sensor since it does not work without it. I think it should work >>>> without doing that, but I intend to connect a X1W-2v2 Outdoor >>>> Humidity and Temperature Sensor for that purpose. >>>> >>>> Received the DS1994 today and intend to add that directly to the >>>> T238, after "programming" it on the pc. >>>> >>>> The modem is sending packets that I can see in UI-View, but I >>>> haven't seen anything show up on any of the APRS activity sites like findu.com. >>>> Not being an APRS person I presume its okay since I did recieve its >>>> signal(connected to HTX-202) and that of many others. >>>> Its been connected for a good 24 hours and still no sign of me on >>>> findu. >>>> >>>> Thanks for your help and a terrific project. And, this 1-wire >>>> network is something. I was surprised at what can be done with >>>> it...some projects are swirling in my head. >>>> >>>> john >>>> >>>> >>>> --- William Beals <will at beals5.com> wrote: >>>> >>>>> John: >>>>> >>>>> Those current numbers look a little suspicious. The 1-wire bus >>>>> and the AAG sensor are totally powered through a single 1.5K ohm >>>>> pullup and a digital logic "active high" drive. The only sensor I >>>>> know of that requires power outside that is the BP sensor that >>>>> does reqire a dedicated +5V wire. Maybe you were measuring >>>>> microamps? The voltages on that bus do vary quite a bit due to it >>>>> being both a power bus as well as a data bus. If you'd like to >>>>> learn more about it, any of the 1-wire device datasheets has a >>>>> decent overview of the protocol, for example >>>>> >>>> http://datasheets.maxim-ic.com/en/ds/DS1990A-F3-DS1990A-F5.pdf. >>>>> Good luck on the modem. The tricky part for that is getting the >>>>> audio levels and keying for your radio. Other than general >>>>> guidelines, I don't offer much advice in the manuals. If you do >>>>> run into problems post here as there are quite a few folk who have >>>>> gone through it before. >>>>> >>>>> I totally understand the frustration! Having built my stations >>>>> quite a while ago, it has been a while since I've gone through the >>>>> hardware gyrations, but am going through a new project right now >>>>> where I've made some inintended smoke! It is probably going to >>>>> take at least >>>>> 2-3 weeks to get "basic life" out of it. Patience isn't my strong >>>>> point. >>>>> >>>>> will >>>>> >>>>> -----Original Message----- >>>>> From: wxsig-bounces at lists.tapr.org >>>>> [mailto:wxsig-bounces at lists.tapr.org] On Behalf Of John Yost >>>>> Sent: Sunday, February 18, 2007 1:55 PM >>>>> To: TAPR Weather Station SIG Mailing List >>>>> Subject: RE: [wxsig] wind sensor prob >>>>> >>>>> Latest update, >>>>> >>>>> The voltages at the processor pins for the 1-wire bus are the same >>>>> at the connector - maybe I wasn't on the right pins before, it was >>>>> getting late. >>>>> >>>>> The unit seems to be working fine so far. I measured the current >>>>> draw for the AAG Electronica V3 sensor and, not surprisingly, >>>>> found it varied all over. The >>>>> +5 power line ran 20-240 ma and the 1-wire bus is >>>>> 30-210ma. Not sure, but that looks like a lot of current for this >>>>> device. >>>>> Seems that the T238 wouldn't want to support many devices if they >>>>> all draw this kind of current. >>>>> >>>>> Now, lets see if the modem will send, haven't seen the LED's light >>>>> yet, hopefully I just haven't caught them. >>>>> They worked during the circuit test. >>>>> >>>>> This sure has been a fun experience, in spite of the frustration >>>>> for a while. >>>>> >>>>> Thanks for any suggestions. >>>>> >>>>> john >>>>> >>>>> >>>>> >>>>> --- John Yost <k3yjp at yahoo.com> wrote: >>>>> >>>>>> Tnx will, >>>>>> I am using the AAG Electonica v3 weather senors. >>>>>> Modem board not connected. >>>>>> >>>>>> Bus voltage was 4.94, Bat volt = 8.8 from the >>>>> status screen. >>>>>> Measured bus voltage varied from 4.6 to 4.94. I >>>>> suspect that the >>>>>> voltage probably dropped lower but my meter isn't >>>>> fast enough to track >>>>>> it. >>>>>> >>>>>> Cleaned the RJ11 and that seemed to help some, got >>>>> wind direction. >>>>>> Poked around on the board and found that the >>>>> voltage at the processor >>>>>> (pins 23,24,25) is steady at 4.94 volts, but it >>>>> was jumping around at >>>>>> the connector. >>>>>> Redid all the solder joints - no improvement. >>>>>> >>>>>> Since the AAG will accept external power and the >>>>>> T238 >>>>>> can supply that power, I connected those lines. >>>>>> Works >>>>>> great. Temp, wind speed and direction and error >>>>> counters are all >>>>>> zero! Bus voltage still jumps around as before. >>>>>> >>>>>> I'm going to try putting a jumper from the >>>>> processor to R16 to see if >>>>>> that will improve that connect. >>>>>> Also, I need to check the actual value of R16, >>>>> guess it could be off. >>>>>> Would like to see it work properly before >>>>> expanding to other sensors. >>>>>> Thoughts? >>>>>> >>>>>> john >>>>>> >>>>>> >>>>>> >>>>>> --- William Beals <will at beals5.com> wrote: >>>>>> >>>>>>> John: >>>>>>> >>>>>>> It does smell of some kind of intermittent >>>>> communication error of >>>>>>> some kind. >>>>>>> Firstest and easiest thing to try is check >>>>> things out on your bench >>>>>>> with nice short cables to all the sensors. If >>>>> problems are ony with >>>>>>> longer cables, that is a unique debugging >>>>> strategy. >>>>>>> If the problem is on your bench, then check for >>>>> standard stuff like >>>>>>> dry solder joints on all the components >>>>> associated >>>>>> with >>>>>>> the 1-wire interface, >>>>>>> including the connector. It may not hurt to >>>>> insert/remove the RJ11 >>>>>>> jacks a dozen times in case some flux may be on >>>>> the connectors. >>>>>>> Something else to check is the 1-wire bus >>>>> voltage. >>>>>>> One of the display >>>>>>> screens while you are showing wx data will show >>>>>> the >>>>>>> bus voltage. >>>>>>> Additionally check the bus voltage at the T238 >>>>> connector and sensor >>>>>>> with a voltmeter, if all are >4.5V life is good, >>>>> if any >>>>>> is >>>>>>> low, let us know. >>>>>>> >>>>>>> Also, if not done already, ensure minimum >>>>> sensors >>>>>> on >>>>>>> the network to see if >>>>>>> it an individual sensor that may be messing with >>>>>> the >>>>>>> 1-wire bus. >>>>>>> >>>>>>> Hope that helps, based on your answers, >>>>> hopefully >>>>>> we >>>>>>> can get an idea of >>>>>>> where to head for round 2. >>>>>>> >>>>>>> will >>>>>>> >>>>>>> -----Original Message----- >>>>>>> From: wxsig-bounces at lists.tapr.org >>>>>>> [mailto:wxsig-bounces at lists.tapr.org] On Behalf >>>>> Of John Yost >>>>>>> Sent: Tuesday, February 13, 2007 9:08 PM >>>>>>> To: wxsig at lists.tapr.org >>>>>>> Subject: [wxsig] wind sensor prob >>>>>>> >>>>>>> I just finished up the T238+. Nice kit. >>>>>>> >>>>>>> After a couple of power on-off cycles, the temp >>>>> sensor has become >>>>>>> intermittent - works for a few cycles then just >>>>> dashes for a couple >>>>>>> cycles. >>>>>>> The wind direction senor stopped altogether, >>>>> just >>>> === message truncated === >>>> >>>> >>>> >>>> >>>> ___________________________________________________________________ >>>> ____ >>>> _____________ >>>> TV dinner still cooling? >>>> Check out "Tonight's Picks" on Yahoo! TV. >>>> http://tv.yahoo.com/ >>>> >>>> _______________________________________________ >>>> wxsig mailing list >>>> wxsig at lists.tapr.org >>>> https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig >>> >>> _______________________________________________ >>> wxsig mailing list >>> wxsig at lists.tapr.org >>> https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig >>> >>> >>> >>> >>> _______________________________________________ >>> wxsig mailing list >>> wxsig at lists.tapr.org >>> https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig >>> >>> >>> >> -- >> * My favorite law: The Law of Unintended Consequences * >> * -- John Vause * >> * "Environmentalism as a metaphysical ideology and as a * >> * worldview has absolutely nothing to do with natural * >> * sciences or with the climate. * >> * -- Czech Pres. Vaclav Klaus * >> * Nothing brings out the opportunism in potential * >> * adversaries like the appearance of being unwilling * >> * to fight in self-defense -- John Vause * >> * Si vis pacem, para bellum - Cicero * >> >> _______________________________________________ >> wxsig mailing list >> wxsig at lists.tapr.org >> https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig > > > _______________________________________________ > wxsig mailing list > wxsig at lists.tapr.org > https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig > > > -- * My favorite law: The Law of Unintended Consequences * * -- John Vause * * "Environmentalism as a metaphysical ideology and as a * * worldview has absolutely nothing to do with natural * * sciences or with the climate. * * -- Czech Pres. Vaclav Klaus * * Nothing brings out the opportunism in potential * * adversaries like the appearance of being unwilling * * to fight in self-defense -- John Vause * * Si vis pacem, para bellum - Cicero * _______________________________________________ wxsig mailing list wxsig at lists.tapr.org https://lists.tapr.org/cgi-bin/mailman/listinfo/wxsig
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