Did read everything but can't figure it out.
I connected a 2.4 Nextion to a Arduino Pro Micro, yellow on TX0 and blue on RX1.
Power and ground are connected separately with a USB connection.
I am trying to upload out of the Nextion Editor (because I can’t find the Nextion Uploader) but keep getting the error: “Connection failed, Forced interrupt”
I am sure I am using the correct COM-port
What am I doing wrong?
p.s. also tried it with a Arduino Nano, same result.
There may be some Nextion 'pros' around here, sometimes, but otherwise, you'll need to provide a link to Nextion info so we can figure out wth yellow and blue are, for a start. Without justification, I smell the possibility you are connecting RS232 level signals directly to the micro/nano, which is a surefire problem. You might also not be connecting grounds.
A schematic would be in order, to allay these concerns.
Here is the scheme. It's pretty simple, I can't figure out whats wrong.
(the right square is the Nextion)
Schematic looks good, so over to the Nextion crowd. What does uploading from the Nextion Editor mean in this context? Can you upload code to an Arduino from the Nextion Editor?
I'm not familiar with the Nextion displays. Are you following a guide for the programming? The guides that I looked at use a SD card to copy the interface from the PC to the display itself.
One point is that TX/RX on a Pro Micro do not have any relation with the USB of the Pro Micro. So to talk to the display you will need to use Serial1.
That's exactly where I think it is going wrong. Can you? Because that's what I have tried.
I have no idea.
Arduino Nano , Micro have UART voltage level 5V,
Nextion UART is 3V3 .
I know, for power I am using the connector delivered with the Nextion. The question is: Can I upload from Nextion Editor to a Arduino
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