RepPanel - A DIY alternative to the PanelDue with WiFi support

oliof

I got the recommended panel (ER-TFTM035-6). Wiring is as per README.md,

ESP32 GPIO	TFT Pin	Color
13	27	white
14	24	yellow
15	23	grey
22	30	orange
21	31	brown
4	21	violet
2	25	green
27	29	blue

Some photos at https://photos.app.goo.gl/gmXPoCFF2FA5Ge2M8

NB: I can only get the display working with the precompiled binaries, building from source was quite hairy to set up, and all I get is a white screen. I didn't find documentation about how to configure the screen correctly, so I am fumbling around a bit there.

oliof

@oliof said in RepPanel - A DIY alternative to the PanelDue with WiFi support:

(510) FT6X36: Found touch panel controller
(510) FT6X36: Error reading from device: ERROR
(510) FT6X36: 	Device ID: 0x00
(520) FT6X36: 	Chip ID: 0x00
(520) FT6X36: 	Device mode: 0x00
(530) FT6X36: 	Firmware ID: 0x00
(530) FT6X36: 	Release code: 0x00

It looks like I ordered the screen with the resistive touch panel, so this can't work (FT6x36 is capacitative if I got it right). I will see if I can get my own build up.

seeul8er

@oliof Was about to suggest that. Your touch panel looks a little different than mine. You can check if J8 on the TFT is closed. Closed means resistive touch.

You can configure the build by dunning

idf.py menuconfig

Check the config options.
Set the display controller manually to ILI9488. The resistive touch panel is a XPT2046. Configure that one as well. You can choose the pins now. I recommend to go with the ones from the readme

oliof

The RepPanel Readme or the LVGL Readme?

seeul8er

@oliof The RepPanel Readme. At least what the TFT is concerned. The touch controller should be SPI as far as I rememember. So you will need to hook it up to the VSPI of the ESP32. The default pins of LVGL should work fine I guess. I updated the repo a few days ago so make sure you use the latest lv_conf.h (copy content from lv_conf_back.h). It fixes random UI freezes.

oliof

@seeul8er I checked out master and will try to sort this out over the weekend. Thanks for your help so far!

oliof

Unfortunately the weekend didn't have enough time for me to figure things out. Between menuconfig selections not sticking, PIN definitions that aren't part of any readme, and possibly bad cables I can't say I've had any success moving forward. The most timely solution seems to be to order another screen with 3.3v and capacitative touch and trying again with that ...

littlehobbyshop

I still can't get my SPI touchscreen working. Feeling I'm in over my head. I just don't know how to troubleshoot this stuff.

seeul8er

@oliof @littlehobbyshop I don't think that the 5V version is any problem. It can be tricky to get the config right. I'd go and config all pins manually with menuconfig. Maybe use these pins as a hint for a start. Then you just need to wire it accordingly. If the TFT does not have proper docs ... thats a different story.

According to the git the XPT2046 driver has not been updated since. So By using the recommended/supported commit ID of LVGL for ESP32 you have the up to date driver

pandaym

@littlehobbyshop said in RepPanel - A DIY alternative to the PanelDue with WiFi support:

I still can't get my SPI touchscreen working. Feeling I'm in over my head. I just don't know how to troubleshoot this stuff.

Sorry man, I completely forgot to answer you. Where are you with this now? I absolutely do not know what I am doing with stuff like this, so I just lucked out getting it working. I can try and figure out some details if you still need it?

oliof

@seeul8er thanks for the encouraging words ... I tried those pins as well. The 5V isn't a problem as I can feed it from the 5V pin and it lights up with your firmware (just without any touch support, of course) -- I just decided to stick with 3.3V on the re-order to avoid any surprises.

I will need to go back and try to get this going, but I can't even replicate your build by following the instructions. So I must be doing something wrong.

oliof

Sorry, I am too dense. The pin numbers in the lvgl readme -- are those the one on the TFT, or the one on the ESP32? I constantly seem to take one list for the other and have so far not been able to tell them apart reliably enough to avoid cabling errors it seems.

seeul8er

@oliof The LVGL docs only specify ESP32 pins. You need to find their counterpart on your TFT

oliof

I found the counter parts in the official buydisplay documentation. I know they're right for the TFT part because that lights up with your precompiled binary. Can you maybe share your sdkconfig from the RepPanel_ESP32 directory that you used when building the current latest binary?

seeul8er

@oliof https://pastebin.ubuntu.com/p/MWBQH2tVSR/

seeul8er

Release v1.1.0 is out now!
Thanks to contributions from Github user vden some new features are added and old bugs were fixed:

Change console image button
Added power button
Added extruder fan control
Added light switch (compile-time selection) - default not enabled
Fix for freezes when using supported hardware (ILI9488)

pd

@seeul8er I finally had another go with this and have made some progress. I bought a new capacitive screen from buydisplay. Unfortunately I didn't realise it wasn't 3.3v version to start with but it was easy enough to short the JP bridge. I finally managed to get the reppanel to light up. The touch screen seems to work and I managed to find my router. However the one issue I have left is that I am unable to bring up the keyboard from the top right hand corner to change the password. Do you have any idea why this might happen. All the other Icons seem to open OK.

@PCR Any news on the PCB front ?

PCR

Still waiting for a display ;(

PCR

Orderd again. PCB will follow!

I_Jedi

@PCR When the PCB is done... sign me up for one! I love the idea of the RepPanel, but have limited skills and time to implement... so the more plug and play the better