Originally shared by Walter K (opaque)
What is the reason for the jagged cutting lines. Too much teeth (GT2 pulley with 30 tooth) or belt tension or microsteps (Nema17 with 1/16) or PWM Hz?
How fast are you trying to cut at?
@Alex_Krause 5mm/sec
What are the best settings in grbl 1.1e / cpu_map.h for a laserdriver with this specifications:
Model: SHS-2500
Current (mA): 2500
Supply Voltage (VDC): 3~24
Modulation (kHz Analog / kHz TTL): 500 / 250
Modulation Voltage (VDC): 0~5
Rise-Fall-Time (μs): 1.4
Noise (mV): 1.6
cpu_map.h:
// Prescaled, 8-bit Fast PWM mode.
#define SPINDLE_TCCRA_INIT_MASK ((1<<WGM20) | (1<<WGM21)) // Configures fast PWM mode.
// #define SPINDLE_TCCRB_INIT_MASK (1<<CS20) // Disable prescaler → 62.5kHz
// #define SPINDLE_TCCRB_INIT_MASK (1<<CS21) // 1/8 prescaler → 7.8kHz (Used in v0.9)
// #define SPINDLE_TCCRB_INIT_MASK ((1<<CS21) | (1<<CS20)) // 1/32 prescaler → 1.96kHz
#define SPINDLE_TCCRB_INIT_MASK (1<<CS22) // 1/64 prescaler → 0.98kHz (J-tech laser)
