Sorry for the delayed response - The email was in my spam folder and I just noticed it.
I didn't do a great job of documenting this project. For the first sensor, I used UDP, not MQTT, though if I have to do maintenance on it, I'll make the switch. The code is here: https://github.com/PeterQuinn925/Arduino/tree/master/esp8266_wifiplustemp_lowpower For the outdoor one, I bought a cheap solar panel for power and an adafruit lithium battery for night time. https://www.amazon.com/gp/product/B01MCXZJ8Y?ie=UTF8&psc=1. It's been reliable for the last five or six years. I have a daemon running on the PI that's running Weewx. It looks for UDP data and writes a text file. My bastardized Accurite driver gets the temp from the file rather than the Accurite station. There's a little logic to handle stale data. If I was to start over, I would create my own driver from a copy of the Accurite driver rather than directly edit it - the reason being is that my driver gets overwritten on every update, so I need to copy it over afterwards. I'm doing this just for fun, so I didn't do anything to calibrate it. To be honest, where I put it in the yard seemed to have more of an effect on the recorded temperature than any calibration errors we're likely to have. I did another one for indoors with a display that does use MQTT. https://github.com/PeterQuinn925/Arduino/tree/master/epd2in13_time_temp On Fri, Jan 10, 2025 at 9:16 AM Alex Vanuxem <vanuxemal...@gmail.com> wrote: > Hi > > How did you build your temp sensor? What is the accuracy? Very interested > in this case. How about humidity? > Thanks > > Op vr 10 jan. 2025 18:09 schreef p q <peterquinn...@gmail.com>: > >> I have an Acurite station, different model. The all in one sensor unit >> with the rain, wind, and temp measurement is kind of cool, but it doesn't >> work well, at least for me. I was unable to find a place with clear sky >> overhead for the rain gauge, clear area around it for the wind gauge, and >> in the shade for the thermometer. The solar panel and fan doesn't do >> enough, at least for me in northern California. So, I gave up on the >> thermometer and mounted it on my roof, where the temperatures are easily 10 >> degrees warmer than ground level or 5 degrees colder on clear nights. >> >> To deal with this, I've built my own temperature sensor and mounted it >> elsewhere and send the data via wifi and MQTT. I hacked the acurite driver >> to accept this data through overcomplicated means. If I were doing it >> again, I'd use the MQTT drivers that have been developed since I started. >> >> Also, I've also had to replace the rain gauge after 8 years of operation. >> It's become unreliable. We don't get very much rain here, so it might last >> longer someplace where it's not sitting for 9 months without any rain and >> being subject to 115 deg temperatures. I don't fault Acurite for this, >> things wear out. >> >> In terms of the barometer, mine is in the display unit, not the sensor. I >> have no idea how accurate it is. It appears to track my local airport >> pretty well. What matters for me is more changes in pressure than the >> absolute value, so if it's off by a couple of percent, it doesn't bother me. >> >> Good luck with it! >> >> On Fri, Jan 10, 2025 at 8:41 AM Chuck Rhode <charlescurtisrh...@gmail.com> >> wrote: >> >>> -----BEGIN PGP SIGNED MESSAGE----- >>> Hash: SHA1 >>> >>> Santa Claus brought me a new-in-the-box, really-old-model AcuRite >>> 02064C to replace an Ambient WS2095 that has been in service at least >>> seven years. Both are USB tethered, so I'm confident about my >>> hardware config, although it's viability remains to be seen. (The >>> *weectl device* utility DOES NOT support the AcuRite although there is >>> a *weewx* driver.) >>> >>> Both stations are operating. I've resisted the temptation to try to >>> switch WeeWX to monitoring the AcuRite because there are discrepancies >>> between the readings displayed on the indoor consoles. I don't know >>> why I expected them to be identical, and I don't know how much >>> precision to expect. It may well be that the discrepancies are within >>> the limits of accuracy for this class of devices. >>> >>> I report to AWEKAS, CWOP, PWSWeather, WOW, and Wunderground, so I >>> think I ought to exercise some care with my calibration in order not >>> to contribute unnecessarily to public perceptions of Anthropogenic >>> Global Warming (AGW). In fact I'm motivated to replace the Ambient >>> station because the wind direction sensor failed in Aug 2023. >>> >>> > reading Ambient AcuRite KSBM >>> > ---------------- ---------- ---------- --------- >>> > outdoor temp 26.2°F 26°F 26.1°F >>> > outdoor humidity 53% 83% 80% >>> > pressure 29.24 inHg 29.84 inHg >>> > barometer 29.56 inHg >>> >>> Right now the outdoor temp is the same on a cloudy day, but I've seen >>> the AcuRite 2°F higher and 2°F lower. It has a small solar panel and >>> is aspirated, so it may be more reliable. It's just merely possible >>> that its humidity is much more nearly correct, too, because it IS >>> CLOSE to what the Sheboygan, WI, airport is reporting. >>> >>> According to the WeeWX hardware pages, both stations report "pressure" >>> so I assume that the contradiction is in the labeling on their >>> consoles and not in what they think they are measuring. Again the >>> AcuRite is more nearly correct, according the airport. Goodness knows >>> how the actual altitude differs but it can't be more than a couple >>> orders of magnitude in feet. >>> >>> ... so my questions are: >>> >>> Q1: Is this level of obsession justified? >>> >>> Q2: Should I attempt any calibration of the AcuRite station? >>> >>> Q3: Or should I just let it fly without providing any smoothing >>> between old and new readings? >>> >>> Q4: Do I need to have youinses change the WeeWX map, or will my >>> station model populate automagically? >>> >>> - -- >>> .. Be Seeing You, >>> .. Chuck Rhode, Sheboygan, WI, USA >>> .. Weather: https://LacusVeris.com/Wx >>> .. 25° — Wind WSW at 7 mph. Sky overcast; light snow; mist. >>> -----BEGIN PGP SIGNATURE----- >>> >>> iF0EARECAB0WIQT+MY/5I/LMPSswTbVg2/xipKOWUgUCZ4FNnQAKCRBg2/xipKOW >>> UkuiAJ434hOrwrf28Y3opzagIUl4MFm0gQCbB+WApkcJSJRg+pCa/Vgu8hiLhHc= >>> =TNQQ >>> -----END PGP SIGNATURE----- >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to weewx-user+unsubscr...@googlegroups.com. >>> To view this discussion visit >>> https://groups.google.com/d/msgid/weewx-user/20250110104101.4d98fbcf%40BigTimber.LacusVeris.com >>> . >>> >> >> >> -- >> Peter Quinn >> (415)794-2264 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to weewx-user+unsubscr...@googlegroups.com. >> To view this discussion visit >> https://groups.google.com/d/msgid/weewx-user/CAA1SM21R3cYtXeY9_M%3DWmtwWkcwH-OsdWyGmAgRb_9kF9zuJzA%40mail.gmail.com >> <https://groups.google.com/d/msgid/weewx-user/CAA1SM21R3cYtXeY9_M%3DWmtwWkcwH-OsdWyGmAgRb_9kF9zuJzA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/weewx-user/CAHaYyoJerDaFvfp9yFFgMxP-mMZg%3DeSxeXdTrfRMdT379k0Lpg%40mail.gmail.com > <https://groups.google.com/d/msgid/weewx-user/CAHaYyoJerDaFvfp9yFFgMxP-mMZg%3DeSxeXdTrfRMdT379k0Lpg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- Peter Quinn (415)794-2264 -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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