Impossible to convert Shelly EM Gen 3 to HAA

[spiccinocchi]

I tired to convert to HAA one Shelly EM Gen 3 via firmware upload (mgos32toHAA Repository) using EMGen3.zip, EMGen3_alt1.zip and EMGen3_alt2.zip but the conversion doesn’t work.
The Shelly EM Gen 3 has installed the original firmware 1.7.0
Can someone help me?

[RavenSystem]

Maybe Shelly is doing changes again in the stock firmware. Could you try this?

EMG3_alt3.zip

[spiccinocchi]

Thank you for the replay but, I tried the EMG3_alt3.zip but it still doesn’t work

[RavenSystem]

Probably, Shelly is blocking the installation of third-party firmwares by OTA in new stock firmware. You would need to flash it using a wired connection with an FTDI adapter.

[spiccinocchi]

I have an FTDI adapter to flash the firmware but I don't know the correct pinout of the Shelly EM Gen3 serial port.
Can you help me?

[rfom23]

Hello.

The same thing is happening to me. None of the three HAA firmware updates via OTA work for me either.

Is there another way to install the HAA firmware via cable on the Shelly EM 3Gen?

Thanks.

[RavenSystem]

Shelly -> USB-TTL:

• U0TXD -> RX
• U0RXD -> TX
• +3.3_ESP -> VCC (3.3V)
• GPIO0 -> GND
• GND -> GND

[rfom23]

And following this instructions on the Wiki?
https://github.com/RavenSystem/esp-homekit-devices/wiki/installation

Would it be installed or would there be some consideration to take into account when dealing with the Shelly EM Gen3?

I mean some special parameter in the commands

Thanks.

[rfom23]

Shelly -> USB-TTL:

• U0TXD -> RX
• U0RXD -> TX
• +3.3_ESP -> VCC (3.3V)
• GPIO0 -> GND
• GND -> GND

Hola @RavenSystem.

Con unos cables Dupont se podría Flasher por cable? Es que estoy probando y apenas entran en los boquetes del Shelly....

Gracias.

[RavenSystem]

Se puede, pero doblando los pines a un lado y al otro para que no se estorben; y cuidado, porque se pueden partir.

Te recomiendo mejor esta otra opción:

[rfom23]

Thanks a lot @RavenSystem.

I managed to flash it!!!

But now I have a problem with the script from my previous ShellyEM that does not work in this ShellyEMGen3.

With a consumption warning greater than 4600W when adding both channels.

{"c":{"io":[[[2,15],2],[[4],6]],"tz":"CET-1CEST-2,M3.5.0/2,M10.5.0/3","l":2,"i":0,"b":[[4,5]],"ic":[[14,12,100]],"tt":[[50,-1,0]],"50":{"m":[[5],[2],[3]]}},"a":[{"0":{"r":[[15,1]]},"1":{"r":[[15]],"s":5},"b":[[4]],"es":[{"t":75,"cd":2.5,"n":2,"dt":[0,56],"vf":0.0000382602,"vo":-0.068,"cf":0.0000119088392,"co":-0.017,"pf":0.00768009},{"t":75,"cd":1,"n":3,"dt":[0,56], "vf":0.0000382602,"vo":-0.068,"cf":0.0000119088392,"co":-0.017,"pf":0.00768009},{"t":80,"j":5,"h":2,"n":5,"dt":[0,2,3,1,3,3]},{"t":95,"h":[4,0,5]}]},{"t":5},{"cd":0.5,"h":0,"s":1,"i":300,"0":{"m":[[-1,1]]},"1":{"m":[[-1]]}},{"t":80,"j":5,"h":0,"n":5,"dt":[0,2,2,1,3,2],"y0":[{"v":-10000,"r":1,"0":{"m":[[-1,1],[-1,-1]]}},{"v":4600}]}]}

Thanks.