Sonoff T1 3CH US Ghost Switching

[Bloodyagent]

• Read the Contributing Guide and Policy and the Code of Conduct
• 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)
• Device used (i.e. Sonoff Basic) : Sonoff T1 3CH_
• Tasmota binary firmware version number used : 6.4.1-2.3.0 pre-compiled bin
• Development IDE - Compiler / Upload tools used : esptool
• Provide the output of command status 0 :

STATUS 0 OUTPUT HERE:
18:56:44 MQT: stat/TestBench/STATUS = {"Status":{"Module":30,"FriendlyName":["Sonoff","Sonoff2","Sonoff3"],"Topic":"TestBench","ButtonTopic":"0","Power":2,"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}}
18:56:44 MQT: stat/TestBench/STATUS1 = {"StatusPRM":{"Baudrate":115200,"GroupTopic":"sonoffs","OtaUrl":"http://thehackbox.org/tasmota/release/sonoff.bin","RestartReason":"Software/System restart","Uptime":"0T02:00:38","StartupUTC":"2019-03-12T15:56:06","Sleep":50,"BootCount":4,"SaveCount":92,"SaveAddress":"F8000"}}
18:56:44 MQT: stat/TestBench/STATUS2 = {"StatusFWR":{"Version":"6.4.1(release-sonoff)","BuildDateTime":"2018-12-24T15:51:34","Boot":31,"Core":"2_3_0","SDK":"1.5.3(aec24ac9)"}}
18:56:44 MQT: stat/TestBench/STATUS3 = {"StatusLOG":{"SerialLog":2,"WebLog":2,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["Byterite",""],"TelePeriod":300,"SetOption":["0000A009","558180C0","00000000"]}}
18:56:44 MQT: stat/TestBench/STATUS4 = {"StatusMEM":{"ProgramSize":503,"Free":500,"Heap":14,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"144051","FlashMode":3,"Features":["00000809","0FDAE794","000383A0","23B617CE","00003BC0"]}}
18:56:44 MQT: stat/TestBench/STATUS5 = {"StatusNET":{"Hostname":"TestBench-8169","IPAddress":"192.168.0.80","Gateway":"192.168.0.1","Subnetmask":"255.255.255.0","DNSServer":"192.168.0.250","Mac":"DC:4F:22:91:FF:E9","Webserver":2,"WifiConfig":4}}
18:56:44 MQT: stat/TestBench/STATUS6 = {"StatusMQT":{"MqttHost":"192.168.0.60","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_91FFE9","MqttUser":"admin","MqttType":1,"MAX_PACKET_SIZE":1000,"KEEPALIVE":15}}
18:56:44 MQT: stat/TestBench/STATUS7 = {"StatusTIM":{"UTC":"Tue Mar 12 17:56:44 2019","Local":"Tue Mar 12 18:56:44 2019","StartDST":"Sun Mar 31 02:00:00 2019","EndDST":"Sun Oct 27 03:00:00 2019","Timezone":"+01:00","Sunrise":"07:10","Sunset":"18:49"}}
18:56:44 MQT: stat/TestBench/STATUS10 = {"StatusSNS":{"Time":"2019-03-12T18:56:44"}}
18:56:44 MQT: stat/TestBench/STATUS11 = {"StatusSTS":{"Time":"2019-03-12T18:56:44","Uptime":"0T02:00:38","Vcc":3.209,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"POWER1":"OFF","POWER2":"ON","POWER3":"OFF","Wifi":{"AP":1,"SSId":"Byterite","BSSId":"18:E8:29:17:48:84","Channel":11,"RSSI":74}}}

• Provide the output of console when you experience your issue if apply :
  (Please use weblog 4 for more debug information)

CONSOLE OUTPUT HERE:
18:47:27 MQT: stat/TestBench/RESULT = {"POWER3":"ON"}
18:47:27 MQT: stat/TestBench/POWER3 = ON

Hey Guys

OK, so I bought 3 each of sonoff T1 1CH, 2CH, 3CH touch switches.

I successfully flashed all 9 units and installed. All of the CH3 units are experiencing ghost switching. The 1CH and 2CH units are fine. 

I have replaced the 3CH units with 2CH units, I.E using the same wall box and switching the same lights (I was only using 2 lights on the 3CH anyway). The problem is not with the location of the units and not with the load they are switching as the 2CH unit is fine in the same wallbox. 

I erased and re-flashed all three 3CH units and put them on my test bench. Joined to wireless, but did not configure any MQTT broker, and they are all still randomly switching (every few hours any channel will switch on, never off) 

Just after they Channel switches on, there is a beep, then a pause, then 2 quick beeps.

So my thought is that there is an issue with the 3CH units and tasmota? (they were not randomly switching using original firmware)

Has anyone else experienced this issue with the 3 CH T1 US units?

Thanks in Advance.

[ascillato]

Please use weblog 4 for more debug information. When you use that, it will tell you in the console the source of the command that triggers your relay. It will be shown as SRC:

[Bloodyagent]

ok, will enable weblog 4 and send result when random switching happens again, thanks

[beppeserafini]

Hi, I have same issue. At the first time I thought was some interference on 315MHz receiver. So, seeing data sheet of SYN470R, I lift pin 11, in this way receiver is in shutdown. After that I put pin 10(DO line) at GND to avoid floating pin. After that I tried all my 7 sonoff without glass cover for 2 days and worked fine! no ghost switch.
So, I remount glass cover and ghost switching returns!
So, if you try to long press one of touch button you hear the first beep and after that quickly 2 beep. In original firmware with this operation you can pair with phone, with tasmota seems do nothing fortunately.
So, the problem is touch sensitivity. I try to find a solution but the are no name on IC between touch button and IC. I hope that someone know its name. I do reverse engineering on that and I draw schematic connection and I'm searching on web a datasheet with pin compatibility.
If is useful I can share my schematic on this part of circuit. If I have time tomorrow I'll see some signal coming from button with oscilloscope because maybe it's possibile to adjust sensitivity adjusting input RC network.

[Bloodyagent]

Ok, just had random switching again, here is output

20:53:35 APP: Button2 immediate
20:53:35 SRC: Button
20:53:35 MQT: stat/TestBench/RESULT = {"POWER2":"ON"}
20:53:35 MQT: stat/TestBench/POWER2 = ON
20:53:35 CFG: Saved to flash at F4, Count 136, Bytes 3584

Thanks

[Bloodyagent]

Hi, I have same issue. At the first time I thought was some interference on 315MHz receiver. So, seeing data sheet of SYN470R, I lift pin 11, in this way receiver is in shutdown. After that I put pin 10(DO line) at GND to avoid floating pin. After that I tried all my 7 sonoff without glass cover for 2 days and worked fine! no ghost switch.
So, I remount glass cover and ghost switching returns!
So, if you try to long press one of touch button you hear the first beep and after that quickly 2 beep. In original firmware with this operation you can pair with phone, with tasmota seems do nothing fortunately.
So, the problem is touch sensitivity. I try to find a solution but the are no name on IC between touch button and IC. I hope that someone know its name. I do reverse engineering on that and I draw schematic connection and I'm searching on web a datasheet with pin compatibility.
If is useful I can share my schematic on this part of circuit. If I have time tomorrow I'll see some signal coming from button with oscilloscope because maybe it's possible to adjust sensitivity adjusting input RC network.

Thanks for this, I suspected this and did remove the cover at some point, but didn't really take note, think you may be right in that it didn't switch while cover was off. I didn't pursue this because its only happening with the 3CH versions and wasn't an issue with original firmware. I may just disable the middle button and turn the 3CH into a 2CH to see if this fixes it.

[Bloodyagent]

Just not sure why, if its a sensitivity problem, is it a non issue with original firmware and with the 2ch and 1ch versions?

[beppeserafini]

I have also another sonoff t1 and I use it for 1 month without any ghost switch using last Tasmota firmware with the last core version. When I received others sonoff I saw some disconnection and looking on the web I installed last Tasmota with 2.30 core and disconnections disappears. Some minutes ago sonoff that worked for a month had a ghost switch. So, now I flash last core version again and I want to see if ghost switch disapper. I’ll inform you

[Bloodyagent]

Yes I moved to core 2.3.0 because of disconnects and haven't tested on 2.4.0

I've removed the white rectangular pads on switches....still getting ghost switching!

Let me know. Thanks

[beppeserafini]

Did you remove all rectangular pads and did you have ghost switch without glass?

[Bloodyagent]

Removed pads. Still ghost switching with cover on. Cover off no switching pads or no pads

[Bloodyagent]

Ok, just had random switching again, here is output

20:53:35 APP: Button2 immediate
20:53:35 SRC: Button
20:53:35 MQT: stat/TestBench/RESULT = {"POWER2":"ON"}
20:53:35 MQT: stat/TestBench/POWER2 = ON
20:53:35 CFG: Saved to flash at F4, Count 136, Bytes 3584

Thanks

[Bloodyagent]

Ok so have compared the boards off the 1 ch and 3 ch switches. They are identical in every way. There are no missing components on the 1ch as opposed to the 3 channel. Only difference I can see is relay count. So why is it the that when I configure the 3ch as a 2ch the bottom touch button is disabled and not the middle similar to the 2ch. Was hoping to make the 3ch exactly as the 2ch to see if removing the middle touch switch would stop the ghost switching.