SOLVED - DHT11 on my sonoff basic not show temperture

[fgvicente]

I have connected a dht11 sensor in the gpio14 configure in modules the gpio but it does not show the values of the sensor

I do not know what can be wrong. thanks in advance

[gtortone]

do you have a 4.7kohm resistor on DHT11 between 3.3V and DATA pin ? (https://i0.wp.com/www.electrodummies.net/wp-content/uploads/2017/02/dht11-library-and-schematic-1.png)

[fgvicente]

mmm no. I will add and I will retest. thanks for response

[fgvicente]

already connect the resistance and neither does it. still does not show me the temperature. I even probe with the module of th but nothing.

23:18:37 CMD: sensor 23:18:37 MQT: stat/home/baño/extractor/RESULT = {"Command":"Unknown"}

00:30:37 DHT: Timeout waiting for start signal low pulse

I tried it with another sonoff with the same firmware and does the same. does not recognize it

It's like there's no sensor. how can I test it

[gtortone]

I see you are using a quite old release. Try to upgrade it because there are some DHT11 issues solved in releases next to your...

[lobradov]

...also, not sure Tasmota will accept non-English characters in URL (ñ)... try replacing with regular n to see if it would be better.

//_ on phone

On Jan 30, 2018, at 05:43, Gennaro Tortone notifications@github.com wrote:

I see you are using a quite old release. Try to upgrade it because there are some DHT11 issues solved in releases next to your...

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[app41]

really sure about connections? The devil is in the detail...

SONOFF BASIC - CONNECTOR 1 (close to the pushbutton) Vcc 2 3 4 GND 5 data 10k resistor between Vcc and data

DHT CONNECTOR 1 Vcc 2 data 3 4 GND

by the way, I made a mistake in soldering a DHT22 last week, resistor was not connected to data It run also without the resistor, maybe because of internal pull up in ESP

[fgvicente]

@lobradov The ñ is not the problem. the same thing happens to me with another sonoff equal without ñ. @app41 the connections are as you indicate. (probe with and resistance) (the resistance is 4k7 as I indicated ... but it did not work either.) I've seen other tutorials that do not put resistance and work but not to me @gtortone I have to try updating. but I do not know how to do it from the web server. I have some instructions?

[app41]

try also to recompile the whole package changing the eeprom validation number (#define CFG_HOLDER in user_config.h) and then firmware again your sonoff with the new image should you have something dirty in your configuration, you can clear it starting from a fresh eeprom reformatting it is a 2-minute test...

[fgvicente]

im updated but still not working

13:11:53 DHT: Timeout waiting for start signal high pulse 13:11:55 DHT: Timeout waiting for start signal high pulse 13:11:58 DHT: Timeout waiting for start signal high pulse

[Jason2866]

Maybe the sensor is defect?!

[gtortone]

can you test the same sensor on a different board ? (e.g. Arduino, something else...)

[gtortone]

if you connect a simple led on GPIO14 does it work ?

[app41]

As last solution, try to cut/eliminate the resistor. I had similar experience few time ago, I don’t know why (maybe the sensor?) but it worked

Da: Jason2866 [mailto:notifications@github.com] Inviato: martedì 30 gennaio 2018 20:55 A: arendst/Sonoff-Tasmota Sonoff-Tasmota@noreply.github.com Cc: Alberto app41@virgilio.it; Mention mention@noreply.github.com Oggetto: Re: [arendst/Sonoff-Tasmota] DHT11 on my sonoff basic not show temperture (#1745)

Maybe the sensor is defect?!

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[fgvicente]

I already solved the problem. Review everything you do to me. the problem was bad welding in the sonoff. Thanks to everyone for their contributions