If you want to support the site, consider clicking on the following affiliate link. https://amzn.to/4hvIK0L It helps even if you don't purchase the item. This is a redo of a video I did back in 2019. It has many views, but I was never really happy with it. I probably will want to redo this video in time, but here it is. This video shows how to send data between the Nextion and the Arduino without the nextion.h library. I have some timestamps below
Start with the Nextion basic configuration
5:42 Nextion to Arduino
12:20 Arduino basic configuration
17:17 Arduino to Nextion
20:04 NExtion back to Arduino
23:50 Add a Physical button to Arduino and send the command to Nextion
25:20 Float value
28:31 Short recap
30:08 Nextion Debug
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