WiFi problems / how do I reset?

Iotawatt is not connecting to the WiFi any more; might be because the base station configuration changed, or I don’t know what. So I need to reconfigure WiFi.

I thought there might be a “reset WiFi” button, but there doesn’t seem to be. Then I thought there might be a file on the SD card that has the WiFi info, but if so, I can’t find it. Then I connected via USB serial and I get “8/21/21 18:51:40z Connecting with WiFiManager.” but no further luck.

How do I set new WiFi info if I can’t access the network with the old WiFi configuration?

Update: After I while, the console output continues:

8/21/21 18:58:06z Did not connect after power-fail. Restarting to reset WiFi.

 ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x4010f000, len 1392, room 16 
tail 0
chksum 0xd0
csum 0xd0

SPI started.

** Restart **

SD initialized.
8/21/21 18:58:07z Real Time Clock is running. Unix time 1629572287 
8/21/21 18:58:07z Reset reason: Software/System restart
8/21/21 18:58:07z Trace:  0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 0:0, 11:0, 11:4, 11:5, 11:5, 11:6, 11:7, 11:8, 11:9, 16:0, 16:1, 16:2, 16:3, 16:4, 16:5, 16:6, 16:7, 11:10, 11:11, 11:12, 11:12
8/21/21 18:58:07z ESP8266 ChipID: 6910209
8/21/21 18:58:07z IoTaWatt 4.x, Firmware version 02_05_09
8/21/21 18:58:07z SPIFFS mounted.
8/21/21 18:58:08z Local time zone: +0:00
8/21/21 18:58:08z device name: IotaWatt
8/21/21 18:58:08z HTTP server started
8/21/21 18:58:08z timeSync: service started.
8/21/21 18:58:08z statService: started.
8/21/21 18:58:08z dataLog: service started.
8/21/21 18:58:12z dataLog: Last log entry 08/21/21 18:55:55
8/21/21 18:58:13z EmonService: started. url=HTTP://emoncms.org, node=IotaWatt, interval=10, encrypted

Now the LED rapidly flashes red.

That’s normal. It’s sampling but not connected to WiFi.

If you power cycle the unit, you should get the Red-Green-Green LED indicating that the unit is in AP mode and waiting for you to connect to it and configure WiFi. Just follow the documentation as with a new unit.

It must be a power on reset (remove and replace the USB power connector). The RGG will last for three minutes. If you don’t connect in that time, it will go to dull red again and you would need to power cycle again.

BTW/ you are on a verty old release of the firmware. I would recommend setting the auto-update class to MINOR once you are connected again.

Ah, thank you. I didn’t recognize the device in my long list of access points … user error.