OpenBuilds Documentation

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3.6 Connecting BlackBox 4X to a Door Sensor (Machine Enclosures) (Advanced)

OpenBuilds BlackBox supports the door-ajar detection features available in Grbl. In order to activate this feature, ensure you run the custom compiled version of Grbl that has this feature enabled. It is not available in the default Grbl configuration.

Note: This is an advanced feature, specific to machines with an enclosure, and not required for everyday use.

We provide an easy-to-use way of installing this custom firmware via OpenBuilds CONTROL:

• Download and Install OpenBuilds CONTROL from https://software.openbuilds.com
• Start OpenBuilds CONTROL
• Click Wizards and Tools on the menu at the top of the CONTROL tab
• Use the dropdowns to Select the appropriate configuration, and then click Flash

The Normally Open configuration requires Normally Open switches:

• When the door is closed, the switch should be CLOSED (Makes Connection)
• When the door is open, the switch should be OPEN (No connection)

If this configuration does not suit you, you can invert the logic:

The Normally Closed configuration requires Normally Closed switches:

• When the door is closed, the switch should be OPEN (No connection)
• When the door is open, the switch should be CLOSED (Makes Connection)