First time with ESP8266 getting rst cause:4, boot mode:(3,6) when trying WiFi

Projects Programming
21

It would probably work if you could connect a solid 3.3v source to the 3V3 pin.

22

There is a '3V pin' on the board.
A voltmeter there, or preferably an oscilloscope, would provide more information.
(The OP's sketch hasn't been posted.)

23

For the price of these things im just gonna buzz it and buy another one, already ordered :wink:

24

And when things don't whirr with a new unit either?
(Mystery.)

25

Ill order another, already ordered another 2 variations of NodeMCU also, im just passing time :wink:

26

So, you're hoping or something for a replacement to be a solution - otherwise it doesn't matter?

27

Found a tip on Reddit to add a 220μF capacitor between 3v3 and Ground, tried it and it worked :wink:

Starting WiFi scan...
4 networks found:
  00: [CH 06] [00:20:7F:A1:55:C8] -52dBm * V 802.11b/g/n     Home1
  01: [CH 06] [78:65:59:8C:1A:FE] -91dBm * V 802.11b/g/n WPS BTHub6-PSK3
  02: [CH 06] [7A:65:59:8C:1C:FF] -91dBm   V 802.11b/g/n     BTWi-fi
  03: [CH 11] [64:CC:22:56:F3:5F] -72dBm * V 802.11b/g/n WPS EE-Hub-kR9N
Starting WiFi scan...
5 networks found:
  00: [CH 06] [00:20:7F:A1:55:C8] -48dBm * V 802.11b/g/n     Home1
  01: [CH 06] [78:65:59:8C:1A:FE] -95dBm * V 802.11b/g/n WPS BTHub6-PSK3
  02: [CH 06] [7A:65:59:8C:1C:FF] -93dBm   V 802.11b/g/n     BTWi-fi
  03: [CH 11] [64:CC:22:56:F3:5F] -72dBm * V 802.11b/g/n WPS EE-Hub-kR9N
  04: [CH 11] [D8:47:32:56:27:5E] -86dBm * H 802.11b/g/n

ESP8266-plus-Capacitor

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28

Yes, as long as the leads make contact with the pads.

(A voltmeter would have shown the 3V3 taking a dip.)

29

Obviously im not leaving it like that :roll_eyes: it was just to test it, final circuit will be soldered.

30

这是非常好的 :slightly_smiling_face:

1 Like
31

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