Arduino Nano on Queenbee, cannot control VFD even with PWM to voltage board - Motors, Mechanics, Power and CNC - Arduino Forum
GRBL Error Codes - 3DTek CNC
alarm 1 state · Issue #295 · gnea/grbl · GitHub
ALARM:1Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended - GRBL - LightBurn Software Forum