And if so, are they only for the v2.1 or will this still be viable for older i3 versions?
how do we know if the board has a bootloader already?
so we can avoid flashing one.
i got the 2017 V3.5 melzi hybrid board..
Any ideas? :)
Does this this marlin fw work, if we don't have any autolevelling probe sensors installed?
since you said you added mesh levelling.
If we upgrade to mks gen 1.4/gen L, can we install this firmware, or do we need to create a new marlin fw for that board?
There is some setting we need to define the
resistor as 4.7k etc to get accurate thermistor reading
for printers that uses that 4.7k resistor.
The default was set at 10k ohm.
The .hex, I think you can't edit the configuration.h
#define ST7920_DELAY_1 DELAY_0_NOP
#define ST7920_DELAY_2 DELAY_5_NOP
#define ST7920_DELAY_3 DELAY_0_NOP
Hope this helps anyone else with this what appears to be rare issue
It works(but requires a reset after eaxh print). So far I prefer repetier. When 1.1.9 is finally released i might give it a go as they seem to be doing some fundemental mods to the acceleration profiles and timing jitter.
Add 2 nop lines in ultralcd_st7920_u8glib_rrd.h at line 86:
#define ST7920_SND_BIT \
WRITE(ST7920_CLK_PIN, LOW); ST7920_DELAY_1; \
WRITE(ST7920_DAT_PIN, val & 0x80); ST7920_DELAY_2; \
WRITE(ST7920_CLK_PIN, HIGH); ST7920_DELAY_3; \
val <<= 1; \
Fixed my issue and works great now.
I'm having the same issue with Marlin 1.1.9. and incorrect ambient temperature no matter which thermistor I select with TEMP_SENSOR. I even got an upgraded thermistor from Gulf Coast Robotics which specifically says to use TEMP_SENSOR 11, but I still get incorrect ambient temperatures that are high by about 17 degrees Celsius.
Anyone have suggestions? I know there is a place in the configuration that I can set a temperature offset, but that doesn't seem right.
I'd honestly get a fresh copy of marlin 1.1.9. Start making the changes you need in a stock rip of it.
But, I actually switched over to Klipper on my melzi, (MP Maker Select v2, bowden, and e3dv6). It is so much nicer.
Do you have a Configuration.h file for the Maker Select V2 for Klipper, or can you let me know what tweaks are needed?
I have an all metal hotend, MOSFET mod, and I bought a BLtouch that I haven't installed yet.
Thanks for the quick reply.
It pushes an 8bit controller almost up to 32bit speeds. Try printing a circle at .24 layer height, 60+mm/s. The stock controller will stutter, pause and blob like crazy. Klipper has no problem with it.
Watch some youtube videos on klipper, and also they have a premade config file for it.