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DHT22 Sensor Issue, Maybe Sketch?

NotYetRated 7 Oct 2015, 21:07 last edited by

Created a test sensor with the base humidity sketch on MySensors, using a DHT22. Initially the device is recognized and appears to work, however after a day of use I see that the temperature reading is not being updated. Also, a second sensor on the same node has appeared, with what appears to be incorrect humidity, and temperature that is being translated to F from my already set point of F. This is giving me readings of 160+, when I should be in the 70's. Pictures attached. Not sure where to go from here.

http://www.mysensors.org/build/humidity
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Troubleshooting • 29 Mar 2014, 19:59 • karenbobiv 30 Mar 2014, 07:20

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@karenbobiv I doubt it's related to the MySensors communication. Are you using a Dallas temp sensor? Could you check that the is actually connected to the dallas sensor by using isConnected(). When googling your problem I found a few hits on -196.6 which is the error code (DEVICE_DISCONNECTED) converted to Fahrenheit. Start debug mode (Config.h) to see what the sensor actually sends.
S_GAS, send and request problem
Domoticz • 28 Nov 2024, 05:38 • Marcin 28 Nov 2024, 05:38

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Node update on value from Domoticz
Domoticz • 30 Jul 2023, 19:19 • zboblamont 7 Aug 2023, 14:33

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@zboblamont OK, so experiments concluded that the return data from the latest version of Domoticz is a String whether it be V_VARx or V_TEXT. I tried the dual declaration using the same CHILD_ID as intended and as VAR_X (using an RF24 - not sure of the relevance) and the actual value sent but failed to make any sense of abstracting the Ulong conversion or the string. Only by presenting a fresh CHILD_ID and duplicating the send of data (water meter) as a V_VAR1 could I recover the last sent reading as a V_VAR1 from that fresh CHILD_ID, thence eventually arriving at 'strtoul' as a solution to restoring the last known value. For clarity my Gateway and Controller run on a UPS, and I hope shortly to add the spare router to that UPS so I'm not left in the dark on what is happening in the dark on a battery powered laptop... Hope this helps others trying to keep track of meters between relentless power cuts and reboots...
Trying to automate in Domoticz
Domoticz • 25 Feb 2022, 23:13 • Feliw05 28 Feb 2022, 03:39

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28 Feb 2022, 03:39

the problem is "if (switch.state == 'On') then" that not works, write: if (switch.active) then or if (switch.inActive) then Device attributes and methods for all devices
Calculate Delta T of two temperature sensors with lua
Domoticz • temperature • 5 Oct 2022, 10:06 • Mela 5 Oct 2022, 10:06

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DHT22 Sensor Issue, Maybe Sketch?

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Troubleshooting • 29 Mar 2014, 19:59 • karenbobiv 30 Mar 2014, 07:20

S_GAS, send and request problem
Domoticz • 28 Nov 2024, 05:38 • Marcin 28 Nov 2024, 05:38

Node update on value from Domoticz
Domoticz • 30 Jul 2023, 19:19 • zboblamont 7 Aug 2023, 14:33

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Domoticz • temperature • 5 Oct 2022, 10:06 • Mela 5 Oct 2022, 10:06

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DHT22 Sensor Issue, Maybe Sketch?

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Vera Gateway Versions Troubleshooting • 29 Mar 2014, 19:59 • karenbobiv 30 Mar 2014, 07:20

S_GAS, send and request problem Domoticz • 28 Nov 2024, 05:38 • Marcin 28 Nov 2024, 05:38

Node update on value from Domoticz Domoticz • 30 Jul 2023, 19:19 • zboblamont 7 Aug 2023, 14:33

Trying to automate in Domoticz Domoticz • 25 Feb 2022, 23:13 • Feliw05 28 Feb 2022, 03:39

Calculate Delta T of two temperature sensors with lua Domoticz • temperature • 5 Oct 2022, 10:06 • Mela 5 Oct 2022, 10:06

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Vera Gateway Versions
Troubleshooting • 29 Mar 2014, 19:59 • karenbobiv 30 Mar 2014, 07:20

S_GAS, send and request problem
Domoticz • 28 Nov 2024, 05:38 • Marcin 28 Nov 2024, 05:38

Node update on value from Domoticz
Domoticz • 30 Jul 2023, 19:19 • zboblamont 7 Aug 2023, 14:33

Trying to automate in Domoticz
Domoticz • 25 Feb 2022, 23:13 • Feliw05 28 Feb 2022, 03:39

Calculate Delta T of two temperature sensors with lua
Domoticz • temperature • 5 Oct 2022, 10:06 • Mela 5 Oct 2022, 10:06

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