Can't connect esphome to Ziggo modem/WiFi router

ESPHome
1

Hello all,

I have been struggling with this for a while now:

On my Archos A7 router with ddwrt, everything works like a charm and as expected.
But I can’t seem to get my esp8266 to connect to the router I want to deploy the ESPHome device on. Its a “Ziggo Connectbox” cablemodem/router all in one from the cable Internet company:

On the ESP side, it seems to connect fine. The captive portal AP does not show up. But on the router config page, I can’t find any trace of it. So I don’t know which ip it has been dealt.

I then tried to use a static ip for the esp (192.168.178.2) with the Ziggo router as the gateway (192.168.178.1), so I would know where to ping. But no ping response from my phone (192.168.178.204).

Then I tried to flash the ESP with an incorrect password on purpose, to force the captive portal to show up. It showed up after a while. I could connect to it. See my router SSID in the list. And enter the correct password. After that, the AP disappears and doesn’t come back. So I assume its connected. But still can’t ping it, or see it in the router ui.

Anyone any idea what the problem is? Or maybe someone with experience with this Ziggo modem/router and ESPHome?

Thanks in advance!

2

If you can connect the esp via serial (like when you first flashed it) you could look at the logs.

3

True. Up until now I never brought my laptop along to the house the problematic router is located. Every time I thought “this time it has to work”.
The idea was to pre-program it at my home, so that when I plug it in the energy meter in the other home, I could view the logs wirelessly in the ESPHome webui after forwarding the ports to the ESP.

I won’t be going there for the next 2 weeks. So I guess I’ll jiet have to wait until than and bring my laptop to read the logs via serial.

There are some topics on the ISP’s community forum about some esp8266’s or sonoffs not wanting to connect to the connectbox. One guy even had 3 esps with identical firmware and 2 connectboxes. On one connectbox, all 3 connected without problem. On the other one, 1 of the 3 esp’s refused to connect whatever he tried. No solution.