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I try to connect my NodeMCU Amica to my WiFi network, but it doesn't detect any networks around. I chose Board "NodeMCU 1.0 (ESP - 12E Module)", upload speed of 115200 and I have the correct port selected.

When I try the blink sketch, it works perfectly, but when I try to use the WiFiScan example, I only get the message "no networks found" and I don't.

I did pay attention that the upload speed in the sketch and monitor are always the same as the one I selected. Also, I tried out different upload speeds, without any succes either.

I already changed my network to 2.4 GHz, and also tried to downgrade the libraries to older versions, but nothing helped till now.

About any help, I would be really glad.

  • try to erase the flash with esptool to clear sdk settings if you changed firmwares and arduino package versions – Juraj Apr 14 '18 at 16:48
  • Ok, finally managed to get it running, but it still doesn't find any networks. By erasing the flash you just meant basically esptool.py --port /dev/tty.SLAB_USBtoUART erase_flash, am I right? – Robin Apr 14 '18 at 17:36
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Firstly try to set it up as AP and check whether is it working ? If not, there is issue with power supply. Because WiFi Scan requires more current... than normal WiFi connection operation.

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