Geeetech A20M 3D printer Marlin-bugfix-2.1.x firmware with ZsYong 2 in 1 Hotend

Features:

ATMEGA2560 Boards: Baud 250000 Drivers: X,Y,Z,E2: TMC2208_Standalone E0,E1: LV8729

x_bed_size 235

Pid Autotune Menu with Manual Editing (Hotend and bed) Accel/feedrate/junction deviation tuning S curve acceleration Custom preheat profiles (adjustable in config) Nozzle parking Improved LCD knob responsiveness New buzzer frequency (2028hz) Mutable buzzer LCD Bed Leveling Menu 5x5 Manual Mesh Bed Warping Compensation Comprehensive tramming menu New progress bar logic Babystepping menu Power loss resume (finer resume) Filament runout detection Custom SD abort and finish codes Auto report SD status Linear Advance (Enabled but set to 0 for those who don't use it) Arc Weld support Quick homing Advanced print pausing improved filament change BL Touch ABL specifics: Z homing uses probe only Faster and accurate probing pattern (5x5 still) High Speed Mode M48 repeatability test Billinear Mesh w/grid extrapolation and 3x subdivision Safe Homing w/broken endstop detection Assisted Tramming Babystepping combined with probe offset

Dual Z driver - E2 Z stepper align