3040 Cnc Usb Setup -

on a stable, level workbench capable of supporting its weight. Verify that all primary frame screws are tightened.

| Problem | Likely Fix | |---------|-------------| | USB not recognized | Reinstall CH340 driver, try different cable | | Jittery motion | Lower kernel speed (Mach3) or increase step pulse width | | Spindle not starting | Check relay wiring, enable "Spindle Enable" pin in config | | Limit switches trigger randomly | Add 10µF capacitor across switch inputs + enable debounce in software | 3040 cnc usb setup

Jog the machine 100mm in X. Measure with calipers. If it moves 98mm, increase $100 proportionally: 1600 * (100/98) = 1632 . on a stable, level workbench capable of supporting