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Good day. I am trying to use an ESP8266 12e Wifi Module that requires 3.3V I used a Logic Converter to reduce the 5v to 3.3v My problem is when I plug the GND from the arduino to the GND on the Logic Converter, the Power On Led dies slowly on the arduino and no power at all. When I plug the 5v only the power is back.

5v and GND both plugged

Only the 5V is plugged

I have tried both the USB power from the laptop and a 9V 250mA power adapter but still the same result.

Any advice would really save me.

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  • Is that soldering really as terrible as it looks?
    – Majenko
    Commented Jul 19, 2017 at 8:11
  • yes. I really have no knowledge in soldering but i did my best to bind them :(
    – Duckbenok
    Commented Jul 19, 2017 at 8:19
  • It looks like one huge blob of so solder shortcircuiting everything out.
    – Majenko
    Commented Jul 19, 2017 at 8:20
  • I think you'll need an external power supply to make both of them works. ESPs need more current than arduinos.
    – Oki Erie Rinaldi
    Commented Jul 19, 2017 at 10:14
  • I think you need to practice your soldering a little more. It's hard to make out, but I would say all that solder is just one huge short circuit linking the power and ground pins and risking melting your Arduino.
    – Majenko
    Commented Jul 19, 2017 at 13:16

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