switching by main power frequency recognition

[beenes]

Hi all,

There are several new mini consoled switches similar to Shelly 2.5
All types based on 8266 (LM1 or TYWE3S)

Like shelly the dual switches triggered using live power by the standard mechanical switch.
If turning on the switch, as a result the GPIO input state chances from 3V3 DC to 1.5AC(50 or 60HZ depending the main frequency).
Seems it can sense the main power frequency if the switch turned on.

I did try all options in the latest tasmota, but look like the current switch’s configuration doesn’t support the new mini switches.
Is it possible to add new configuration to Tasmota enabling triggering by frequency recognition?

The ESP also connected to one GPIO which receiving the constant reference 1.5AC. maybe the switch IO can be compared with the reference IO, and if equal -> switch is turned on.

[Jason2866]

Please, address this to the Tasmota Support Chat. The chat is a better and more dynamic channel for helping you. Github issues are meant for Tasmota Software Bug Reporting.

Please check the Contributing Guideline and Policy and the Support Guide.

Thanks.

Support Information

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[thxthx0]

Summary of discord:

• they count 50Hz/60Hz pulses - needed hardware is already there

• you can do this with Counter and Rule, but in fact, it's not a satisfactory solution.

• same problem for that dimmer and even more:
  Support for Wi-Fi Dimmer? #5737 (comment)
  

I really hope there will be a solution,
maybe @chaosmaster @thirug010 @digiblur ... can help us, plzzzzz :)

• no similarity to the Shelly SW / S1 / S2... inputs.

• define a Counter at that input in Tasmota and see what is happening,
  when the switch is pressed. you'll see the pulses in TasmotaUI

• what we're talking about 😃 ...
  https://www.aliexpress.com/item/33012114855.html

https://www.aliexpress.com/item/33012242667.html

• Jason2866: "If someone with programming skills knowing Tasmota well, have a interest to support this device maybe a PR is made....
  So dont await anything."

• I don't think it's only a device specific feature,
  but a general and good solution to detect mains switch inputs.

e.g. additional Tasmota switch config (triggered counter / predefined number of pulses)
would be great...

[Jason2866]

Since Tasmota has a lot of tasks to do, counting AC frequency pulses is not possible.
Tasmota has already counter function. You can use it via rules. See wiki, commands and rules

[thxthx0]

Perhaps not the task of counting AC frequency, but a task of pulse assignment.

"not possible" ... words that coders don't know :)

edit some pics for the template repo:
QS-WIFI-D01 Dimmer 150W

[Jason2866]

Just do it and make a PR ;-)

[ascillato]

Hi, there is no rule triggers for counters. By now, counters can be checked only every teleperiod time with the teleperiod message (using on counter#c1 do ... )

If adding a new trigger for counters like:

On counter1#state do power1 toggle endon

will not work either for that usecase due it will be toggling every 50ms while the switch is being pressed.

A proper solution for that should be a new gpio definition that supports frequency and have a switchdebounce feature.

At this moment I don't have that device in order to implement that. Sorry.

[thirug010]

@thxthx0

Can you post the picture of the circuit if possible

[beenes]

yes of course.

[thxthx0]

@ascillato and @thirug010 BIG, BIG thanks for your help :) highly appreciated.

@thirug010
I only have the dimmer module (issue #5737), but I think the input is the same.

That's what I found out (also most other parts if needed)

[thxthx0]

If adding a new trigger for counters like:

On counter1#state do power1 toggle endon

will not work either for that usecase due it will be toggling every 50ms while the switch is being pressed.

@ascillato

I've tried @gemu2015's Script interpreter, where it is possible to set a trigger

input=COUNTER#C1 
if chg[input]>0 then ...

but in fact, as you mentioned, there is the problem of repeated toggling.

I guess the exact number of pulses isn't relevant / 50 or 60Hz input voltage doesn't matter,
and may work like this:

Are there pulses at the input?
yes -> push button/switch is pressed
no -> button is not pressed

for the

• WiFi Switch:
  if there is a short period of pulses (e.g. < 1 second) -> then toggle the relay

• WiFi Dimmer:
  if there is a short period of pulses -> then toggle the light
  (if light is on ->SerialSend '0x00' / if light is off ->SerialSend previous value )

  if there starts a longer period of pulses -> toggle dim direction and then
  increase/decrease dim value as long as the button is pressed
  (and the limits aren't reached)...

[gemu2015]

if you accept a one second delay the following script should work

>D
sw=0
cnt=0
toggle=0

>T
cnt=COUNTER#C1

>S
if chg[cnt]
then
; counter has changed, switch is on
sw=1
else
; no change switch is off
sw=0
endif

; set power according to switch
if chg[sw]>0
then
;=>power1 %sw%
toggle^=1
endif

if chg[toggle]>0
then
=>power1 %toggle%
endif

[thxthx0]

Many thanks @gemu2015 for the script and of course especially for
your great Tasmota Script editor 👍 👍 👍

Yes, I also think the max. 1sec delay wouldn't be a problem at all.

Your script seems to work for switch (not pushbutton),
but if the switch remains in one position, there is also the problem with repeated toggling.

It seems for that reason I'm not able to write a script for the dimmer with 'soft' dimming.