Probe led indicator without hacking the firmware?

[LarryM]

Well, there’s good news and bad news.

The good news is that you can get the A5 status with the appropriate settings for $10 (status report mask) and the ? (current status command).

The bad news is that it requires version 1.0c of grbl which is not released, but can be used at your own risk.

See this thread:

Changes to the status report for Grbl version 1.0c

Updates to grbl have changed status reporting in version 1.0c (used in the X-controller I believe). These changes affect the output from the “?” status command to grbl. Information here is based on version 1.0c (edge fork). The status report mask (grbl parameter $10) has two new control bits to select display of the probe pin and control pins’ status. The bit assignments are as follows: 7 - Not used at this time 6 - display control pin status 5 - display probe pin status 4 - display homin…