Tasmota: Support for Shelly 2 and Shelly 1 ?

[h-tro]

Hi Theo,

can tasmota get support for Shelly 2?
https://shelly.cloud/shelly2/
Shelly 2 is very small wifi device with 2 relays, power meter and should also use ESP8266.
In most cases, it fits in a German flush mount box (60 mm Ø and 40 mm depth), including the previous switch and is therefore invisible.
I think there are many users who would like to use shelly 2 with tasmota.

[curzon01]

Interesting device (not such low priced as Sonoff devices)
but might be not as simple as it looks because

Has an integrated precise power meter

[reloxx13]

i think the power meter would not work anymore.

i have read about other devices which power meter and it did not work anymore after flashing tasmota.

[h-tro]

I have opened a shelly2 (https://shelly.cloud/shelly2)

It contains an ESP8266EX with 2 MB flash memory (WINBOND 25Q16BVFIG)
and a power monitoring IC MCP39F501 (https://www.microchip.com/wwwproducts/en/MCP39F501)

[senfkorn]

Hi,

There are 5 pins on the backside of the board. I've traced them out, there are all you need. From top to bottom (3 pin group is top)
RX
TX
VCC

(Groupe of 2)
Gpio 0
GND

[senfkorn]

Next step,

The two current shunts for the both relais outputs are coupled together to the MCP39F501. So it is not easily possible to measure each output individually.

[h-tro]

Hi senfkorn,

yes, I can confirm the assignment of the pins on the backside of the board.
I have the same result.

[tmarquespt]

Hi, anyone successfully installed tasmota on Shelley? Even without the power meter feature?

[NCC1701G]

Hi, I bought the Shelly 1.
Link
He has none power meter feature but he ist very cheap and fits also in a German flush mount box.

Is it possible to support this?

[h-tro]

Hi,

Shelly 1 is new. I will order one.
I think you can flash tasmota and use the module type "Generic" over the web interface and set up the GPIO config for shelly1
(GPIO's see https://shelly.cloud/shelly1-open-source/)

[cko-skverlag]

Where is the need of flashing the shelly (1)? Doesn't it work without cloud connection as the sonoff do? Thanks

[curzon01]

If you do not like having your home devices in a foreign cloud system, Tasmota is a one of the best alternative firmware.

And to get it work you need to flash.

[cko-skverlag]

But I thought the Shelly system comes without a cloud service?

[JPe2]

https://github.com/arendst/Sonoff-Tasmota/issues/2789#issuecomment-411327105
@h-tro Did you manage to flash the Shelly-1 with Tasmota firmware already?

[cko-skverlag]

No – and i don’t understand why you would want to flash it? Isn’t there a free webserver onboard? From what i have read there is no need to connect the device to a cloud. But i’m not a technician.

Christoph

[kuzba]

Here is nice video, showing tasmota on shelly1 with ready to flash binary. https://www.youtube.com/watch?v=J20hxfUTP9I

[tmarquespt]

I have succefully flashed tasmota on the shelly1 with the .bin from link that kuzba posted.
The wifi manager mode didn't started (or at least I couldn't use it) so I had to manualy set it up with serial commands using Termite.
That .bin file already has options for the shelly1 and shelly2 so I believe the guy from TheHookUp had them both working. I'm going to flash shelly2 and let you know.

[kuzba]

Are you able to run shelly again from mains (eg 230V)? I somehow destroyed the device (shelly1), it runs only from 3.3V pin header. But I probably swapped L and N wire, not sure if this can cause the trouble. So I am without toy now.

[benzino77]

@tmarquespt let us know how to solder wires to flush shelly 2

[tmarquespt]

@benzino77 senfkorn already exaplined the pinout on the 5th post of this page. I'm still thinking on how to do it as I would avoid soldering such small pins. I'll probably make a connector with some needles and flash it without soldering.
@kuzba Mine is working. Changing L with N should make no difference as this is AC I have mine with a plug to the wall socket so I have no ideia which is the L or the N. Why do you say it's not working? It has no light. Try to connect with Termite (Mains OFF, gpio out) and send an AP command in order to see if it responds. Beaware that the connection scheme is different from the sonoff as the current does not go trough the relay by default and you have to inject it (as explained in the picture of the shelly manual included in the box)

[kuzba]

@tmarquespt when running from mains, device gets really hot and does not connect to AP. When running from 3.3V thru pin header, connects to AP and responds to commands. I guess power supply is KO. PCB schematics will help.

[tmarquespt]

@kuzba That is strange indeed. I can feel some temperature on mine but nothing out of the ordinary. It just might be an issue with the unit, you should try to return it and get a new one.

FYI: Theo just made Tasmota compatible with Shelly "Only INPUT available in v6.1.1.9 as Button1n option. See changelog."

[arendst]

In the video GPIO05 is selected as Switch1.

I prefer to use Button1 as it will allow using the webpage for toggling the relay.

  { "Shelly1",         // Shelly 1 (ESP8266 - 2MB)
     GPIO_SWT1,        // GPIO00 Switch
     GPIO_USER,        // GPIO01 Serial RXD and Optional sensor
     0,
     GPIO_USER,        // GPIO03 Serial TXD and Optional sensor
     GPIO_REL1,        // GPIO04 Relay (0 = Off, 1 = On)
     GPIO_KEY1_NP,     // GPIO05 Button
     0, 0, 0, 0, 0, 0, // Flash connection
     0, 0, 0, 0, 0, 0
  }

Can anyone confirm that the above config works as expected?

[h-tro]

Compiling error 6.1.1.9

[benzino77]

...senfkorn already exaplined the pinout on the 5th post of this page...

That's true, but one or two pictures will be just great.

[papaloewe]

Here is the Webpage where the video comes from:
http://www.thesmarthomehookup.com/the-shelly-1-smart-relay-is-it-better-than-the-sonoff-basic/

[ethan4]

In this video he says the pull-up resistors have to be disabled, can that be done as part of the module preset? https://youtu.be/J20hxfUTP9I?t=416

[tmarquespt]

@benzino77 Sure :)
@senfkorn / @h-tro Can you confirm that this is correct?

[tmarquespt]

@ethan4 It should be working on the last version of Tasmota v6.1.1.9. If you want to make that change it has to be on the source before compile. You cannot change that after flashing. You might just flash the .bin file that is on the description of that video. Then you just select Shelly1 Module from configuration.

[ethan4]

@tmarquespt I'll try that, but that means there will have to be a different .bin for this device always right? Can the ability to change that be added and then made customisable in the UI?

Not everyone using Tasmota is competent to compile it themselves.

[h-tro]

@arendst
I have the following configuration for my shelly1 (own bin-file):

{ "Shelly1", // Shelly1 (ESP8266 - 2MB)
GPIO_KEY1, // GPIO00 Button
GPIO_USER, // GPIO01 Serial TXD and Optional sensor
0,
GPIO_USER, // GPIO03 Serial RXD and Optional sensor
GPIO_REL1, // GPIO04 Relay 1 (0 = Off, 1 = On)
GPIO_SWT1_NP, // GPIO05 External switch input 1
0, 0, 0, 0, 0, 0, // Flash connection
0, 0, 0, 0, 0, 0
},

After a first test it seems to work.
I will test it further and report in the next few days.

[tmarquespt]

It seems to work on shelly2 (the .bin from the video)
I was able to flash and have the relays clicking.

[arendst]

@tmarquespt using your shelly2 can you confirm that when you perform toggle 1 that indeed output NO1 is switched?

I ask as I suspect the relays are connected reversed based on (ancient) information from Olimex (https://github.com/OLIMEX/olimex-iot-firmware-esp8266) and my interpretation.

So I would expect that when you perform Toggle 1 output NO2 would be switched when using the pre-compiled binary from thehookup.

[arendst]

[tmarquespt]

[h-tro]

[salopette]

[kuzba]

[ethan4]

[h-tro]

[salopette]

[h-tro]

[salopette]

[eazuka]

[h-tro]

[thehookup]

[arendst]

[h-tro]

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[h-tro]

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[arendst]

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[codedmind]

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[thehookup]

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[arendst]

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[arendst]

[thecode]

[arendst]

[meingraham]

[arendst]

[meingraham]

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[arendst]

[ricreis394]

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[ricreis394]

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