Sensor DHT22 not working with Sonoff RF R2 Power V1.0 (new Sonoff Basic)

[jacoscar]

Hello,

I'm using one of the new Sonoff Basic with the wires instead of the thick solder tracks, recognisable by the words "Sonoff RF R2 Power V1.0" printed on the board.

I've bought a DHT22 and connected the first pin to 3V3, second pin to Rx (GPIO3) and fourth pin to GND; In settings I've set "GPIO3 Serial In" to "SI7021", restarted the Sonoff but temperature and humidity are not displayed. I've also tried selecting "AM2301", and also using Tx (GPIO1) by connecting the sensor there.

The sensor works fine when connected directly to the Raspberry with both 5V or 3V inputs

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• Searched the problem in issues (https://github.com/arendst/Sonoff-Tasmota/issues)
• Searched the problem in the wiki (https://github.com/arendst/Sonoff-Tasmota/wiki/Troubleshooting)
• Searched the problem in the forum (https://groups.google.com/d/forum/sonoffusers)
• Searched the problem in the chat (https://discord.gg/Ks2Kzd4)
• Development/Compiler/Upload tools used : USB to TTL serial
• Hardware used : Sonoff RF R2 Power V1.0 (new Sonoff Basic)
• If a pre-compiled release or development binary was used, which one? : NA
• You have tried latest release or development binaries? : YES
• Provide the output of command status 0 : YES

STATUS 0 OUTPUT HERE

11:23:41 CMD: Status 0
11:23:41 MQT: stat/sonoffR2/STATUS = {"Status":{"Module":1,"FriendlyName":["Sonoff"],"Topic":"sonoffR2","ButtonTopic":"0","Power":0,"PowerOnState":3,"LedState":1,"SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0}}
11:23:41 MQT: stat/sonoffR2/STATUS1 = {"StatusPRM":{"Baudrate":115200,"GroupTopic":"sonoffs","OtaUrl":"http://thehackbox.org/tasmota/release/sonoff-basic.bin","RestartReason":"Software/System restart","Uptime":"0T02:23:06","StartupUTC":"2019-02-06T08:00:35","Sleep":50,"BootCount":29,"SaveCount":77,"SaveAddress":"F7000"}}
11:23:41 MQT: stat/sonoffR2/STATUS2 = {"StatusFWR":{"Version":"6.4.1(basic)","BuildDateTime":"2018-12-24T14:43:30","Boot":7,"Core":"2_4_2","SDK":"2.2.1(cfd48f3)"}}
11:23:41 MQT: stat/sonoffR2/STATUS3 = {"StatusLOG":{"SerialLog":0,"WebLog":2,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["MYUSERSSID",""],"TelePeriod":300,"SetOption":["00008009","558180C0","00000000"]}}
11:23:41 MQT: stat/sonoffR2/STATUS4 = {"StatusMEM":{"ProgramSize":445,"Free":556,"Heap":21,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"144051","FlashMode":3,"Features":["00000809","0F082780","000083A0","21021706","000001C0"]}}
11:23:41 MQT: stat/sonoffR2/STATUS5 = {"StatusNET":{"Hostname":"sonoffR2-5756","IPAddress":"192.168.1.11","Gateway":"192.168.1.1","Subnetmask":"255.255.255.0","DNSServer":"192.168.1.1","Mac":"DC:4F:22:DF:36:7C","Webserver":2,"WifiConfig":4}}
11:23:41 MQT: stat/sonoffR2/STATUS6 = {"StatusMQT":{"MqttHost":"192.168.1.15","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_DF367C","MqttUser":"MYUSER","MqttType":1,"MAX_PACKET_SIZE":1000,"KEEPALIVE":15}}
11:23:41 MQT: stat/sonoffR2/STATUS7 = {"StatusTIM":{"UTC":"Wed Feb 06 10:23:41 2019","Local":"Wed Feb 06 11:23:41 2019","StartDST":"Sun Mar 31 02:00:00 2019","EndDST":"Sun Oct 27 03:00:00 2019","Timezone":"+01:00","Sunrise":"08:13","Sunset":"17:55"}}
11:23:41 MQT: stat/sonoffR2/STATUS10 = {"StatusSNS":{"Time":"2019-02-06T11:23:41"}}
11:23:41 MQT: stat/sonoffR2/STATUS11 = {"StatusSTS":{"Time":"2019-02-06T11:23:41","Uptime":"0T02:23:06","Vcc":3.552,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"POWER":"OFF","Wifi":{"AP":1,"SSId":"MYUSERSSID","BSSId":"7C:11:CB:F2:CA:37","Channel":11,"RSSI":88}}}

[Jason2866]

Have you disabled serial logging? If not you cant use rx tx

[jacoscar]

Yes, It's off

08:31:36 CMD: SerialLog
08:31:36 RSL: stat/sonoff/RESULT = {"SerialLog":"0 (Active 0)"}

[ascillato]

Hi,

Please, could you be so kind on completing the troubleshooting template? The information required there is necessary in order to provide help. Thanks

[jacoscar]

Hi,

Please, could you be so kind on completing the troubleshooting template? The information required there is necessary in order to provide help. Thanks

I have updated the first post

[ascillato2]

It is needed a resistor for DHT22. Did you connect it?

[jacoscar]

I read most people don’t use it, but I’ve tried with a 10k Ohm resistor and it didn’t do anything
I also tried to connect it to a Sonoff S26, still using serial Rx with no luck

[Jason2866]

Do you know that the sensor is working?

[jacoscar]

Do you know that the sensor is working?

It works if directly connected to the raspberry; it shows up in Home Assistant

[ascillato2]

Please, try the latest full version from the development branch: http://thehackbox.org/tasmota/020500/sonoff.bin

[jacoscar]

I did the OTA update, isn't it the same?

[ascillato]

You have:

"Version":"6.4.1(basic)"

I'm asking you to please try latest full version from development branch (http://thehackbox.org/tasmota/020500/sonoff.bin):

"Version":"6.4.1.14(sonoff)"

[jacoscar]

Wow, it works now!

[ascillato]

The basic version does not have sensors support.

[ascillato2]

Closing this issue as it has been solved. Thanks

[jacoscar]

I would like to understand, was I supposed to use a development version instead of the released one from the beginning?

[ascillato]

You were using the sonoff-basic.bin that does not have sensors support. Now you are using the full version sonoff.bin