IR Probe 1.4

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IR Probe


Ir-probe-front2.jpg

Overview

Specifications

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)

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
RAMPS Yes Yes
RAMBO Yes Yes
RUMBA Yes Yes
Melzi Yes No Wires must be cut for screw terminals, and 5V wired to separate pin. Wiring sketch included below
Duet Yes No Need to change order of pins in connector to suit, simple to do though
Smoothieboard Yes No Needs different connector
Azteeg X5 Mini Yes No Wires must be cut for screw terminals
MKS Gen / Base Boards Yes No Some boards need different connector

Configuring Marlin

The pullup for the Z_MIN endstop needs to be enabled. Uncomment the line:

 #define ENDSTOPPULLUP_ZMIN

The endstop should be set to non-inverting:

 const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.

Enable auto-bed levelling:

 #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:

 #define AUTO_BED_LEVELING_GRID

Adjust the coordinates that define the corners of the probed grid:

 #define LEFT_PROBE_BED_POSITION 50
 #define RIGHT_PROBE_BED_POSITION 150
 #define FRONT_PROBE_BED_POSITION 20
 #define BACK_PROBE_BED_POSITION 180

Set the grid size:

 #define AUTO_BED_LEVELING_GRID_POINTS 2

Configure the probe offset from the nozzle:

 #define X_PROBE_OFFSET_FROM_EXTRUDER 30     // Probe on: -left  +right
 #define Y_PROBE_OFFSET_FROM_EXTRUDER 0     // Probe on: -front +behind
 #define Z_PROBE_OFFSET_FROM_EXTRUDER -1.95  // -below (always!)

Configure homing / probing settings:

 #define Z_RAISE_BEFORE_HOMING 4       // (in mm) Raise Z before homing (G28) for Probe Clearance.
                                       // 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
 #define Z_RAISE_BEFORE_PROBING 5   //How much the extruder will be raised before traveling to the first probing point.
 #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:

 #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:

 #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

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

Store Page

Resources

Mounting Drawing Wiring Melzi