Skip to main content
Arduino

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

11
  • 1
    where is the logic level shifter? Commented Sep 13, 2017 at 9:52
  • @Juraj ESP8266 GPIO pins are 5V tolerant. Commented Sep 13, 2017 at 13:49
  • You might want to put the breadboard power supply on the other end, so the + an - markings actually match and doesn't look like you just shorted everything. Commented Sep 13, 2017 at 13:51
  • Also that breadboard might have a split in the middle of the side rails. Commented Sep 13, 2017 at 13:56
  • Do a sanity check, connect pin 2 - 3 and see if the Arduino terminal echo back a char that you send. Commented Sep 13, 2017 at 17:43