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can not load the sketch for the WirelessDisplay

using the official Installation guide i can not upload the sketch to the b board.

i get the following error :Arduino: 1.8.7 (Mac OS X), Board: "WeMos D1 R1, 80 MHz, Flash, 4M (3M SPIFFS), v2 Lower Memory, Disabled, None, All Flash Contents, 230400"


Build options changed, rebuilding all

Sketch uses 313508 bytes (30%) of program storage space. Maximum is 1044464 bytes.

Global variables use 31888 bytes (38%) of dynamic memory, leaving 50032 bytes for local variables. Maximum is 81920 bytes.

warning: espcomm_sync failed

error: espcomm_open failed

error: espcomm_open failed


This report would have more information with

"Show verbose output during compilation"

option enabled in File -> Preferences.

thank you for your help


Please make sure you have selected the right port.  To find out , follow step 2.2 in here

If the port is right and problem persist, try lowering the speed a bit as mentioned in the document.

Hope this helps.


It works. Thank you!


I had a older Serial driver in my MacBook Pro machine. i updated it and now it works fine