- Ox CNC 750 x 1000 kit from Ooznest - http://ooznest.co.uk/3D-Printer-CNC-Kits-Bundles/OX-CNC-Machine
- 400W Brushless Spindle Motor ER11 & Mach3 PWM speed controller + PSU - http://www.ebay.co.uk/itm/141684438281
- GRBL compatible Arduino shield v3.00 - http://blog.protoneer.co.nz/arduino-cnc-shield/
- 2 x 1M Plastic Open Type Towline Cable Carrier Drag Chain 15mm x 20mm - http://www.amazon.co.uk/gp/product/B00AUB2584
- M5 drop in t-nuts for misc bolting of stuff on - http://ooznest.co.uk/Drop-In-Tee-Nuts
- M5 t nuts for misc stuffs - http://www.amazon.co.uk/gp/product/B00WW50JAM
- NEMA23 stepper backs - https://www.thingiverse.com/thing:1002246
- Cable Chain - X Axis - Bottom Bracket - http://a360.co/1P55SAS
- Cable Chain - X Axis - Top Bracket - http://a360.co/224AYQb
The Ox CNC kit includes OpenBuilds NEMA23 stepper motors - http://openbuildspartstore.com/nema-23-stepper-motor/
Parts:
- Sockets - Circular Connector, Plug, 4, Pin, Solder, Panel Mount - http://cpc.farnell.com/pro-signal/psg01593/plug-multipole-panel-4p/dp/AV15051
- Plugs - Circular Connector, Receptacle, 4, Socket, Solder, Cable Mount - http://cpc.farnell.com/pro-signal/psg01590/socket-multipole-4p/dp/AV15048
- Cable - Multicore Unscreened Cable, 4 Core, 0.5 mm², 16 x 0.2mm, 82.021 ft, 25 m - http://uk.farnell.com/pro-power/pp000336/multicore-4-cond-0-5mm2-25m-440v/dp/2440120
Don't buy these:
Cable - Green Multicore Screened Cable, 4, 22 AWG, 0.33 mm², 328 ft, 100 m - http://cpc.farnell.com/concordia-technologies/6011238/external-individually-screened/dp/CB18752Cable - PRO POWER 7-2-4A Multicore Unscreened Cable, 4 Core, 0.22 mm², 7 x 0.2mm, 328 ft, 100 m - http://cpc.farnell.com/pro-power/7-2-4a/cable-7-0-20mm-4c-unscreened-100m/dp/CB15174?ost=cb15174
Wiring:
| Pin | Colour | Coil |
|---|---|---|
| 1 | Green | Coil 1 |
| 2 | Red | Coil 1 |
| 3 | Yellow | Coil 2 |
| 4 | Blue | Coil 2 |
The ebay purchased spindle is mentioned at the top of the build docs.
- Spindle labelled as "HXKJ DMW57314 DC48v 400w 12000RPM"
- Controller - BLDC Motor Driver "HX-WS400"
- Power supply - "JC-500-48" 48v 10A PSU
Wiring:
| Pin | Colour |
|---|---|
| Hall- | Black (small) |
| HC | White (small) |
| HB | Green (small) |
| HA | Blue (small) |
| Hall+ | Red (small) |
| Motor W | Black (large) |
| Motor V | White (large) |
| Motor U | Red (large) |
Connecting the GRBL controller to the speed controller:
What colours did I use?!
- Proximity switches - http://www.dx.com/p/lj12a3-4-z-bx-inductive-proximity-switch-black-silver-dc-6-36v-100cm-cable-228309#.V4ySRR9vEeM
- 4 channel 24v relay board - http://www.ebay.co.uk/itm/24V-4-Channel-Relay-Module-With-OPTO-Isolated-High-and-Low-Level-Trigger-/301460254292?
Changes to the GRBL config.h:
- Comment out HOMING_INIT_LOCK which prevents homing
- Change SPINDLE_MAX_RPM to 12000
- Change SPINDLE_MIN_RPM to 6000
// #define MINIMUM_SPINDLE_PWM 5 // Default disabled. Uncomment to enable. Integer (0-255)
Spindle testing using G codes:
So:
- M03 - Spindle on (clockwise)
- M04 - Spindle on (anti-clockwise)
- M05 - Spindle off
- S1000 - Speed 1000
Bed area limits:
x = 561 y = 740 z = 60