LOLIN D32 - Trouble uploading skethc via arduino

tracing
Posts: 1
Joined: Wed Jul 11, 2018 3:43 am

LOLIN D32 - Trouble uploading skethc via arduino

Postby tracing » Wed Jul 11, 2018 3:50 am

after code compiles and CONNECTING is displayed I have to press the D32's reset button once a second in a crapshoot to get it to connect or else I get "A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header"

This process will make development a huge headache, what am I missing ?

Mike Teachman
Posts: 1
Joined: Fri Aug 03, 2018 2:32 pm

Re: LOLIN D32 - Trouble uploading skethc via arduino

Postby Mike Teachman » Fri Aug 03, 2018 2:51 pm

I have similar connection problems. I use the ESPTOOL with Lolin D32 boards to install the MicroPython firmware binary.

Here is how I fixed the connection problem:

I added an external 1 uF capacitor between the RESET and GND pins. This change is discussed on the MicroPython forum:
https://forum.micropython.org/viewtopic.php?f=18&t=4887&start=20
Look for the posts that contain images of oscilloscope captures.

Maybe this will work for you?

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