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I am pretty sure this device worked yesterday. I tried to short GPIO0 to ground (flash), nothing. I have a second ESP that uploads fine, but this one does not.

Is their another way to get this bootloader to open up? Or am I the owner of a brand new door stop?

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    show the complete wiring. is it a board or a basic module? – Juraj Jan 27 at 5:24
  • "doorstop", heh; maybe for a dollhouse ;) Does serial monitor show anything, like garbage, when you reset it attached? – dandavis Jan 27 at 6:35
  • @Juraj It's USB. I should have been more specific. There is no way to screw it up. – brad Jan 27 at 11:22
  • @dandavis Yes, I see a single line of garbage going across the screen in the serial monitor. – brad Jan 27 at 11:23
  • sorry I missed D1 mini in the tile. is something wired to the board? – Juraj Jan 27 at 11:34
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I'm not sure if this will help EVERYONE, but I hope it at least helps someone. I had the same issue with several different boards (3 Nano's, 2 NodeMCU ESP8266's, and 1 Uno). I searched and searched for an answer and I kept reading about this pin or that pin being "pulled low" or "pulled hi" interfering with uploading sketches. Well, since I couldn't find a solid answer anywhere I decided to disconnect all of the peripherals hooked to my board (except for powers and grounds) and Wah Laa!!! The sketch uploaded like it was supposed to. So, I believe if you just unhook all of the sending and receiving pins from all of your peripherals during upload, the sketch should upload just fine. I hope this helps you.

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