ESP8266 Community Forum

- Mon Mar 27, 2017 3:55 pm #64308 I am trying to diagnose if my ESP8266 is defective or user error.

Purchased a Feather Huzzah from adafruit about a week ago, was able to upload to it without issues. Noticed it hung after a few seconds with the basic blink test. I made a simple script to connect to my WiFi and log data to some feeds. (Noticed occasional hangs after 10 mins, several hours, after a day, etc.)

The board worked for a week and quit on me. Getting the following error now when trying to upload from Arduino ID.

warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

Looking for info on how to diagnose further. While I'm new to the 8266 chip, I am no stranger to these types of projects.

Thanks,
Greg

- Tue Mar 28, 2017 10:05 am #64339 That sounds like the 3.3V supply flaking out. The 8266 IC draws some fairly nasty current spikes and I see those messages when the supply flakes out.

Daniel
Get your ESP32 at EzSBC.com

- Tue Mar 28, 2017 7:14 pm #64349 3.3V pin looks good (see attachment)

That sounds like the 3.3V supply flaking out. The 8266 IC draws some fairly nasty current spikes and I see those messages when the supply flakes out.

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- Wed Mar 29, 2017 2:25 pm #64379 Here is my sketch if it helps as well.

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