Originally shared by Anthony Bolgar I ordered one of these:

Lasers
,
1

Originally shared by Anthony Bolgar

I ordered one of these: https://www.banggood.com/3_5-Inch-Nextion-Enhanced-HMI-Intelligent-Smart-USART-UART-Serial-Touch-TFT-LCD-Module-Display-Panel-p-1188732.html?rmmds=search&cur_warehouse=CN

It can connect via serial RX/TX . There is a GUI editor available for free to design screens and program functions, it can control 8 GPIO pins as well as having the serial interface. I am going to make an open source version of the MKS TFT screens that is going to be focused on laser installations. Will be able to control exhaust fans, cooling pumps etc. via the GPIO’s and relays, as well as sending move and homing cycles, alignment test firing and other functions using Gcodes sent over serial.

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Found it cheaper here
https://www.robotshop.com/en/nextion-enhanced-32-hmi-touch-display.html?gclid=CjwKCAiAy4bTBRAvEiwAFtatHL-az8r1755nrX8qLd9e9hsiNKTlGE6vlUDdXx0Jw9DB2F3qnyvU7RoCnoIQAvD_BwE

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Darn you! I just bought one from the link above. Shipping is not included but it does come from the US and should be here in a few days. DARN YOU! :wink:

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Would you like to collaborate on this project? I could use the help:)

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Sounds like fun! Keep in touch.

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Is that any different from this one for $24.80 with free shipping?

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Looks like the same model number.

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Have any of you tried programming this yet? This would be cool for a stand alone laser operations monitor. Its in my “save for later” as I have way to many projects waiting. Will be happy to collaborate …

I assume this is the same one:

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@donkjr ​ wrong model. Should be NX4832K035

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I pulled the trigger on the enhanced 7" display from banggood, it was 10 dollars cheaper than the 5" (I know, no rhyme or reason to pricing sometimes)

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@donkjr I bought the display for just what ou mentioned, a stand alone operations display for the laser. I am also hoping to build the laser safety system into the display as well.

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@HalfNormal thanks for that catch. I ordered directly from Nextion. They have these all the way up to 7" displays.

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I just received my display today. It’s going to be a bit before I have a chance to play with it though.

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…takes forever to get them here :(.

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I need to quit hanging out with you guys. Now I have another project that is more interesting than the many I haven’t already finished…

Documentation is sketchy…

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Wow! That was the shortest forever! :wink:

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OMG I ordered the wrong one and @HalfNormal warned me! There is a subtle difference in the part # I did not notice:
NX4832K035 vs
NX4832T035
Notice the K and T. The T does not have GPIO… UGGHHHGGHG!

Looks like you also need and expansion board to get the local GPIO?

https://www.itead.cc/display/nextion/nextion-expansion-board.html

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Thanks! Just ordered one.

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Pretty limited documentation. No startup docs.
Look up Nextion on Youtube its helpful.

Download editor: https://nextion.itead.cc/resources/download/

Power:
Plug the red 5v wire to on micro usb daughter card
Plug the black gnd to the - on the micro SD card
The yellow and blue are serial cables not needed unless you are communicating with another controller.

Programming:
The display program that you create with the display editor is uploaded and then you copy it to SD card and subsequently load it into the display.
You load it into the display be removing and replacing power.

Talking to the display
You can listen to and write to the display using serial and the Nextion library (not tried it).

Support resources
The support forum is rudimentary and somewhat rude.

GPIO
No hints yet as to how you use the GPIO that is if I had the right card :(.

Feel free to correct my errors. So far not sure that an Ada-fruit arduino derivative with a display and library isn’t simpler.

I will create a HMI program and then decide if I go by the GPIO version.

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Just received my 7" enhanced (the one that uses GPIO). Editor is a little clunky, but not too hard to figure out.