LCD JLX12864 flashing

[olympionex]

I am not sure what is going on exactly but I think I fixed it:

https://github.com/pypilot/pypilot/commi...37b3dbc104

I just received my pypilot hat and and this problem. I was able to fix it by updating the relevant cpp file and rebuilding from the command shell on the pi itself. I'm not sure if this is the canonical way to do it, but it worked fine to simply chmod +x the pypilot.build file in ~/pypilot and run it. It then updated the .tcz file and appeared to launch fine with a working lcd on reboot.

[kagouraki]

I had the same problem with the jlx display bought on ebay some years ago. The problem was the ugfx driver. I changed some hex commands that i copied from the supplied example of the seller and it worked after that.
If i been awnest, i dont see a reason to go with the nokia or jlx displays. They need to be hard wired to the raspberry pi and its a wiring mess with all the button and lcd cables and you cant have wires more than two meter long. The best solution is to buy one of these(https://www.ebay.com/itm/374343283666?mk...media=COPY) and eliminate all the problems of the wired one.
My expierence is documented in this thread
https://forum.openmarine.net/showthread....=Kagouraki

[Max1947]

I had the same problem with the jlx display bought on ebay some years ago. The problem was the ugfx driver. I changed some hex commands that i copied from the supplied example of the seller and it worked after that.
If i been awnest, i dont see a reason to go with the nokia or jlx displays. They need to be hard wired to the raspberry pi and its a wiring mess with all the button and lcd cables and you cant have wires more than two meter long. The best solution is to buy one of these(https://www.ebay.com/itm/374343283666?mk...media=COPY) and eliminate all the problems of the wired one.
My expierence is documented in this thread
https://forum.openmarine.net/showthread....=Kagouraki

Hi @kagouraki, 
I am also blocked with the wiring of the buttons and LCD. 
Is yours always valid?
Not being a technician at all can you make a summary of things to do? 
Sean's Firware you used was model for the buttons' thanks in advance and good wind, always!

[kagouraki]

The steps are:
1)Buy the board i mention
2)upload the bin file Sean posted in the thread i mention in the last page
3)with the esp connected to the pc navigate to the hat directory and run 'make upload'. This will copy the necessary files to the esp.
4) look in the config_esp32.py file how to wire the buttons or change to your requirements and the upload again if changed

Everything is ready.

I havent real time tested this but works flawlesly in the bench

[Max1947]

[quote pid="25256" dateline="1678876742"]
kagourakiThe steps are:
1)Buy the board i mention
2)upload the bin file Sean posted in the thread i mention in the last page
3)with the esp connected to the pc navigate to the hat directory and run 'make upload'. This will copy the necessary files to the esp.
4) look in the config_esp32.py file how to wire the buttons or change to your requirements and the upload again if changed

Everything is ready.

I havent real time tested this but works flawlesly in the bench
[/quote]
OK, tks.  This is right?


https://it.banggood.com/LILYGO-T-PicoC3-...8879634939

[grzechu81]

my driver may be different because you can plug and unplug the display at any time and it still works,  so it resets all the registers every frame, but  this may cause a refresh somehow.

Hi Sean,
I have the same jlx blinking problem.
Can I find somewhere compiled tinypilot package which includes your fix ? Or I need to build whole from scratch ?
If option numbr 2: How should I proceed in order to have your fix included ?

[oldjohn]

My  nokia5110 display needed replacing. After 2 defective screens I finally got one to work, although it sometimes flashes.  I need to build a new reliable unit but have read the reports of problems with the jlx 12864. What is the current advice regarding displays?

[seandepagnier]

the software fixed the jlx12864 flashing

[oldjohn]

the software fixed the jlx12864 flashing

Thanks, I will use that.
I have this display;  https://www.ebay.co.uk/itm/354758692385
The pin marking are different.   Is this the correct display?

[seandepagnier]

yes it appears to be the same one