Difference between revisions of "IR Probe 1.4"

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{{IR Probe Versions}}
{{IR Probe Versions}}


[[File:Ir-probe-front2.jpg|thumb|250px]]
[[Category:Products]]
[[File:Ir-probe-14-1-2.jpg|thumb|250px]]
== Overview ==
== Overview ==
These 3D Printer Z-Probes use modulated infra-red LEDs to accurately detect proximity to the print surface, allowing for automatic bed-levelling while printing.
Compared to mechanical probe solutions - such as a servo and microswitch - these boards have the advantage of requiring no moving components, weighing less, and having a higher degree of repeatability and reliability. Compared to inductive or capacitive probes, these boards are less dependent on the material of the print surface, and will even work on glass. Combined with a high degree of immunity from background IR sources, these boards are ideal for nearly any printer build.
We've designed these boards to couple to a standard 30mm fan - this means they're immediately compatible with all E3D-V6 and Lite6 HotEnds, mounting directly to the fan with no modification or adaptor necessary. Additionally, these boards use a lightweight cable with a compact connector, in order to make wiring as easy as possible.
To mount to a printer without a suitable 30mm fan, all that is required are two screw holes. These should be spaced 24mm apart horizontally, and at a distance of 22mm above the tip of the nozzle. See the attached mechanical drawings for further information.
These probes will trigger at a distance of 3mm from the print surface. Recommended mounting height is that the bottom edge of the PCB be 1-2mm above the tip of the nozzle, and the probe's Z-offset can be tweaked in firmware to achieve the desired bed-levelling results.
== Specifications ==
== Specifications ==
* Dimensions: 30.00x23.75mm
* Weight: 2.5g (excluding cable)
* Trigger distance: 3mm from edge of PCB
* Trigger Repeatability: 0.005mm (5µm) Standard Deviation
* Included Cable Length: 100cm
== Improvements from 1.3 ==
== Improvements from 1.3 ==
=== Compact Form Factor ===
=== Compact Form Factor ===
Line 20: Line 35:
* faster boot time (<1s instead of 6s)
* faster boot time (<1s instead of 6s)


== Backwards Compatibility ==
V1.4 is largely backwards compatible with V1.3. The mechanical mounting holes and dimensions are identical, and all mounting arrangements for V1.3 should work fine with V1.4.
Notably, the provided cable is different, so a re-wire may be necessary to swap to V1.4.
== HotEnd Compatibility ==
== HotEnd Compatibility ==
These are the HotEnds we've tested with or had reports of success with. If you're interested in trying something different, or if you've tried a different HotEnd with our probe, let us know how it went!
These are the HotEnds we've tested with or had reports of success with. If you're interested in trying something different, or if you've tried a different HotEnd with our probe, let us know how it went!
Line 67: Line 86:
|Connector Compatible
|Connector Compatible
|Notes
|Notes
|Wiring Image
|- bgcolor="#f0fff0"
|- bgcolor="#f0fff0"
|RAMPS
|RAMPS
|Yes
|Yes
|Yes
|Yes
|
|Connect to Z-min endstop, leave 4th pin (yellow) disconnected
|[[File:IR-probe-wiring-ramps.jpg|200px]]
|- bgcolor="#f0fff0"
|- bgcolor="#f0fff0"
|RAMBO
|RAMBO
|Yes
|Yes
|Yes
|Yes
|Connect to Z-min endstop, leave 4th pin (yellow) disconnected
|
|
|- bgcolor="#f0fff0"
|- bgcolor="#f0fff0"
Line 81: Line 103:
|Yes
|Yes
|Yes
|Yes
|Connect to Z-min endstop, leave 4th pin (yellow) disconnected
|
|
|-
|style='background: #f0fff0' |Smoothieboard
|style='background: #f0fff0' |Yes
|style='background: #f0fff0' |Yes
|style='background: #f0fff0' |Connect to Z-min endstop, leave 4th pin (yellow) disconnected
|style='background: #f0fff0' |
|-
|-
|style='background: #f0fff0' |Melzi
|style='background: #f0fff0' |Melzi
|style='background: #f0fff0' |Yes
|style='background: #f0fff0' |Yes
|No
|No
|Wires must be cut for screw terminals, and 5V wired to separate pin. Wiring sketch included below
|Wires must be cut for screw terminals, and 5V wired to separate pin.
|[[File:Ir-probe-MelziWiring.jpg|200px]]
|-
|-
|style='background: #f0fff0' |Duet
|style='background: #f0fff0' |Duet
Line 92: Line 122:
|No
|No
|Need to change order of pins in connector to suit, simple to do though
|Need to change order of pins in connector to suit, simple to do though
|-
|
|style='background: #f0fff0' |Smoothieboard
|style='background: #f0fff0' |Yes
|No
|Needs different connector
|-
|-
|style='background: #f0fff0' |Azteeg X5 Mini
|style='background: #f0fff0' |Azteeg X5 Mini
Line 102: Line 128:
|No
|No
|Wires must be cut for screw terminals
|Wires must be cut for screw terminals
|
|-
|-
|style='background: #f0fff0' |MKS Gen / Base Boards
|style='background: #f0fff0' |MKS Gen / Base Boards
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|No
|No
|Some boards need different connector
|Some boards need different connector
|
|-
|style='background: #f0fff0' |Anet A8
|style='background: #f0fff0' |Yes
|No
|Red, black and green wires should be connected to Z-min pins as shown.
|[[File:Ir-probe-wiring-a8.jpg|200px]]
|-
|style='background: #f0fff0' |Geeetech GT2560
|style='background: #f0fff0' |Yes
|No
|Connect green signal pin to Z-MIN pin, red and black to available 5V/GND pins as shown.
|[[File:Ir-probe-gt2560 wiring.jpg|200px]]
|-
|-
|}
|}


== Configuring Marlin ==
== Configuring Firmware ==
The pullup for the Z_MIN endstop needs to be enabled. Uncomment the line:
[[IR Probe Firmware Setup (Marlin 1.1.0+)]]
  #define ENDSTOPPULLUP_ZMIN


The endstop should be set to non-inverting:
[[IR Probe Firmware Setup (Marlin 1.1.0-RC4+)]]
  const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.


Enable auto-bed levelling:
[[IR Probe Firmware Setup (Marlin 1.1.0-RC1+)]]
  #define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
  #define Z_PROBE_REPEATABILITY_TEST  // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.


Recommended bed levelling mode is grid:
[[IR Probe Firmware Setup (Smoothieware)]]
  #define AUTO_BED_LEVELING_GRID


Adjust the coordinates that define the corners of the probed grid:
== Notes ==
  #define LEFT_PROBE_BED_POSITION 50
After receiving power the on-board LED will flash twice, indicating the board is ready for use.
  #define RIGHT_PROBE_BED_POSITION 150
  #define FRONT_PROBE_BED_POSITION 20
  #define BACK_PROBE_BED_POSITION 180


Set the grid size:
== Buy It ==
  #define AUTO_BED_LEVELING_GRID_POINTS 2
[http://aus3d.com.au/ir-z-probe Store Page]


Configure the probe offset from the nozzle:
== Resources ==
  #define X_PROBE_OFFSET_FROM_EXTRUDER 30    // Probe on: -left  +right
<youtube>XIHX7nYsERU</youtube>
  #define Y_PROBE_OFFSET_FROM_EXTRUDER 0    // Probe on: -front +behind
[[File:Ir-probe-14-mounting.PNG|frameless|310px|top|Mounting Drawing]]
  #define Z_PROBE_OFFSET_FROM_EXTRUDER -1.95  // -below (always!)
[[File:ProbeE3Ddrawing.PNG|frameless|310px|top|E3D Mounting / Spacing Drawing]]
[[File:Ir-probe-MelziWiring.jpg|frameless|310px|top|Wiring Melzi]]


Configure homing / probing settings:
=== Links ===
[http://www.thingiverse.com/thing:1732906 STL Placeholder / Model of IR Probe V1.4 (Thingiverse)]


  #define Z_RAISE_BEFORE_HOMING 4      // (in mm) Raise Z before homing (G28) for Probe Clearance.
[http://www.thingiverse.com/thing:1656279 Printable mount  for MaxMicron printers (Thingiverse)]
                                        // Be sure you have this distance over your Z_MAX_POS in case


  #define XY_TRAVEL_SPEED 8000        // X and Y axis travel speed between probes, in mm/min
[http://www.thingiverse.com/thing:1230215 Printable mount  for Geeetech Prusa i3 X (Thingiverse)]


  #define Z_RAISE_BEFORE_PROBING 5  //How much the extruder will be raised before traveling to the first probing point.
[http://www.thingiverse.com/thing:1229765 Printable mount for MK8 Extruder + Hotend combo (Thingiverse)]
  #define Z_RAISE_BETWEEN_PROBINGS 2  //How much the extruder will be raised when traveling from between next probing points
  #define Z_RAISE_AFTER_PROBING 5    //How much the extruder will be raised after the last probing point.


When using a probe instead of an endstop, it's a good idea to enable Z_SAFE_HOMING. This moves the probe to the center of the bed before homing:
[http://www.thingiverse.com/thing:1132649 Printable mount for MK8 Extruder + Hotend combo (Thingiverse)]
  #define Z_SAFE_HOMING  // This feature is meant to avoid Z homing with probe outside the bed area.


By default the point that the probe homes at should be the center of the bed - however some versions of Marlin contain a bug where the probe point is miscalculated. To be safe, you can manually define the probe point:
[http://www.thingiverse.com/thing:1350607 Printable mount for NEMA-17 motors (Thingiverse)]
  #define Z_SAFE_HOMING_X_POINT (100)    // X point for Z homing when homing all axis (G28)
  #define Z_SAFE_HOMING_Y_POINT (100)    // Y point for Z homing when homing all axis (G28)


== Connecting ==
[https://github.com/Aus3D/mark2/blob/master/CAD/PrintedParts/e3d-volcano-adaptor.STL Printable mount for E3D Volcano (GitHub)]
=== RAMPS, RAMBO, RUMBA ===
Each IR Z Probe comes with a cable that will connect directly to the endstop pins on these control boards. No modification should be required. Make sure to align and orient the connector correctly - the red wire should match the '+' indicator on the board.
 
=== Azteeg X5 Mini ===
Screw terminals are used to connect bare wires to the X5 for all endstops. The included cable will need the connector removed / cut off, and each wire stripped back to allow connection.
 
== Notes ==
After receiving power the on-board LED will flash twice, indicating the board is ready for use.
 
== Buy It ==
[http://aus3d.com.au/ir-z-probe Store Page]
 
== Resources ==
<youtube>XIHX7nYsERU</youtube>
[[File:Ir-z-probe-mounting-drawing.PNG|frameless|310px|top|Mounting Drawing]]
[[File:Ir-probe-MelziWiring.jpg|frameless|310px|top|Wiring Melzi]]

Revision as of 12:53, 4 May 2018

IR Probe


Ir-probe-14-1-2.jpg

Overview

These 3D Printer Z-Probes use modulated infra-red LEDs to accurately detect proximity to the print surface, allowing for automatic bed-levelling while printing.

Compared to mechanical probe solutions - such as a servo and microswitch - these boards have the advantage of requiring no moving components, weighing less, and having a higher degree of repeatability and reliability. Compared to inductive or capacitive probes, these boards are less dependent on the material of the print surface, and will even work on glass. Combined with a high degree of immunity from background IR sources, these boards are ideal for nearly any printer build.

We've designed these boards to couple to a standard 30mm fan - this means they're immediately compatible with all E3D-V6 and Lite6 HotEnds, mounting directly to the fan with no modification or adaptor necessary. Additionally, these boards use a lightweight cable with a compact connector, in order to make wiring as easy as possible.

To mount to a printer without a suitable 30mm fan, all that is required are two screw holes. These should be spaced 24mm apart horizontally, and at a distance of 22mm above the tip of the nozzle. See the attached mechanical drawings for further information.

These probes will trigger at a distance of 3mm from the print surface. Recommended mounting height is that the bottom edge of the PCB be 1-2mm above the tip of the nozzle, and the probe's Z-offset can be tweaked in firmware to achieve the desired bed-levelling results.

Specifications

  • Dimensions: 30.00x23.75mm
  • Weight: 2.5g (excluding cable)
  • Trigger distance: 3mm from edge of PCB
  • Trigger Repeatability: 0.005mm (5µm) Standard Deviation
  • Included Cable Length: 100cm

Improvements from 1.3

Compact Form Factor

  • capacitor C1 decreased in height to reduce profile of board, easier to fit probe in tight spaces
  • smaller JST-SH connector used, connector no longer protrudes from body of probe

Selectable Digital or Analog Output

  • separate output pins for both modes
  • mode no longer dependent on automatic detection of control board

Improved Control Board Compatibility

  • strong pull-ups on certain control boards no longer prevent probe from working

General Improvements

  • faster boot time (<1s instead of 6s)

Backwards Compatibility

V1.4 is largely backwards compatible with V1.3. The mechanical mounting holes and dimensions are identical, and all mounting arrangements for V1.3 should work fine with V1.4.

Notably, the provided cable is different, so a re-wire may be necessary to swap to V1.4.

HotEnd Compatibility

These are the HotEnds we've tested with or had reports of success with. If you're interested in trying something different, or if you've tried a different HotEnd with our probe, let us know how it went!

HotEnd Compatible Adaptor Required Notes
E3D-V6 Yes No Mounts to fan duct with existing screws
E3D-Lite6 Yes No Mounts to fan duct with existing screws
E3D Chimera Yes No Mounts to fan duct with existing screws
E3D Cyclops Yes No Mounts to fan duct with existing screws
E3D-V6 or Lite6 with Volcano Yes Yes Printable adaptor available here.
Mark8 Extruder + Hotend Combination Yes Yes Printable adaptor available here.

Electronics Compatibility

These are the boards we have tested the probe with. It is likely the probe is compatible with other boards as well - if you try a different control board and it works, let us know so we can add it to the list.

Motherboard Electronics Compatible Connector Compatible Notes Wiring Image
RAMPS Yes Yes Connect to Z-min endstop, leave 4th pin (yellow) disconnected IR-probe-wiring-ramps.jpg
RAMBO Yes Yes Connect to Z-min endstop, leave 4th pin (yellow) disconnected
RUMBA Yes Yes Connect to Z-min endstop, leave 4th pin (yellow) disconnected
Smoothieboard Yes Yes Connect to Z-min endstop, leave 4th pin (yellow) disconnected
Melzi Yes No Wires must be cut for screw terminals, and 5V wired to separate pin. Ir-probe-MelziWiring.jpg
Duet Yes No Need to change order of pins in connector to suit, simple to do though
Azteeg X5 Mini Yes No Wires must be cut for screw terminals
MKS Gen / Base Boards Yes No Some boards need different connector
Anet A8 Yes No Red, black and green wires should be connected to Z-min pins as shown. Ir-probe-wiring-a8.jpg
Geeetech GT2560 Yes No Connect green signal pin to Z-MIN pin, red and black to available 5V/GND pins as shown. Ir-probe-gt2560 wiring.jpg

Configuring Firmware

IR Probe Firmware Setup (Marlin 1.1.0+)

IR Probe Firmware Setup (Marlin 1.1.0-RC4+)

IR Probe Firmware Setup (Marlin 1.1.0-RC1+)

IR Probe Firmware Setup (Smoothieware)

Notes

After receiving power the on-board LED will flash twice, indicating the board is ready for use.

Buy It

Store Page

Resources

Mounting Drawing E3D Mounting / Spacing Drawing Wiring Melzi

Links

STL Placeholder / Model of IR Probe V1.4 (Thingiverse)

Printable mount for MaxMicron printers (Thingiverse)

Printable mount for Geeetech Prusa i3 X (Thingiverse)

Printable mount for MK8 Extruder + Hotend combo (Thingiverse)

Printable mount for MK8 Extruder + Hotend combo (Thingiverse)

Printable mount for NEMA-17 motors (Thingiverse)

Printable mount for E3D Volcano (GitHub)