I feel a litle cheated here. I built a Marlin version based on their latest firmware. Changed it to 310 degr for E0 uploaded it and it gave ok on the upload.
But still I can only go to 260 dgr and it seems to me that the darn screen has software that prevents higher value. What kind of garbage is that.
How can one get around this?
Yes, I know that. That’s why I’m using full metal heatbreak in it… The fact that they are selling that heatbreak but still not be able to go higher than 260 is not logical. There is no need what so ever for it as it is now.
I have tried to change the fw but it is the screen that block a higher value. That source code is not available so no go there. That is why it sucks. A printer 2022 should not be blocked like that since a lot of material need a higher temperature. If I had known it, I would never have bought it. But it is what it is and I will change the motherboard and display.
you already found the maximum temperature limit 260°C setting in the Configuration.h file in line 563ff: #define HEATER_0_MAXTEMP 275 #define HEATER_1_MAXTEMP 275 #define HEATER_2_MAXTEMP 275 #define HEATER_3_MAXTEMP 275 #define HEATER_4_MAXTEMP 275 #define HEATER_5_MAXTEMP 275 #define HEATER_6_MAXTEMP 275 #define HEATER_7_MAXTEMP 275
[…] #define HOTEND_OVERSHOOT 15 // (°C) Forbid temperatures over MAXTEMP - OVERSHOOT
The settings in Marlin is no problem. I was stuck with the darn screen. I don’t know what to make undone to match the original so I guess that using that tool to get read the fw that is there is the way to go here.
I didn’t know that was possible.
I do have an Octopus main board and a new screen ordered to do it myself so if it goes south I do have the same rout I intended to take as an option.
Thanks for this info, it will be fun… Or not…
it is not difficult to undo - all removed files are available in the commit for download here:
Meanwhile I installed & tested Brandon Phillips’ SV04 firmware V1.1.B3.3 & the matching touchscreen firmware V2.0.B3 Release V2.0.B3 · bphillips09/SV04-Touchscreen · GitHub on my SV04:
It works fine & I like the new features (SD-card subdirectories + auto-tramming + finer hotend offsets). Maybe you want to restart your modification from that point. You need to install that DGUS tool from DWIN. On my linux desktop the temperature control screen (16) looks like this:
I did this several times but I only get checjsum 0 on every line. It shouldn’t be that I suppose. The only thing I changed in Screen was maxtemp on extr 1 and 2 then in order you wrote. Save-export-copy folder dwin to card and start.
In the marlin file I changed maxtemp on extr 1 and 2 to the same value. That one worked fine to flash.
It’s the screen that is the problem here.