I have had ESP32s automatically opening and closing my vertical blinds for a couple of years now.
I have started to build units for my venetian blinds too. The software is complete and works.
The systems use the software from one of the RN tutorials to connect to my router for the time.
They have all worked fine for some time.
Last week I had a power cut. Only one of the units was plugged in, one that has worked for years.
When the power was restored I noticed that the unit wasn’t working. After some investigation I have found that this unit is running but will not connect to the WiFi, and therefore the program will not progress.
I then got the other unit out, that has previously run without problems and plugged it in. This one connected to the WiFi OK.
I then checked the one I am working on for the venetian blinds. It will now not connect to the WiFi.
I then dug out an old board that I use for prototyping and a brand new board that was still in it’s packaging. Neither will connect to the WiFi. The new board detects my WiFi, but when I load the program it will not connect.
The only thing I have changed on my WiFi is the addition of a Ring doorbell and chime. I have not tried disconnecting this yet as it’s going to be a bit of a pain to do.
Has anyone had a similar experience?
That’s a weird issue.
It seems that your router is not accepting more connections. But I can’t be sure that’s the issue.
Maybe you’ll need to check your router settings.
Before that, you can load an Wi-Fi sketch example in a board and see if that works. If it doesn’t work, it may be something related with the router definitions or the router itself.
It may be that your router has degraded performance (This can happen over time). How far away from the router are these boards? Are they using the onboard trace antenna? Can you try an external antenna? Can you try bringing the boards closer to your router to see if they connect?