There is an incorrect command being sent to the Nextion in the Arduino Weather example. The error in sendToLCD() incorrectly refers to object field "pic" but the Nextion weather.hmi file uses "picc".
Hi, this weather tutorial is written by the old version V0.21, and the "Crop" component attribute is "pic".But now the new version has changed the "pic" into "picc". We have updated the code download link in blog.
Thanks for your post.