Setting up teensy 4.1 for first time run using bCNC

[krupis]

Hello. I have purchased development board and teensy 4.1 I would like to know how to get it running for a simple test.

I have flashed the device with the simple 3axis compat hex file.

Is it possible to connect teensy 4.1 microcontroller to the PC and run the bCNC software to change some configurations? After I try to make a connection, I get an alarm state as been discussed multiple times already, and it does not allow me to call $HELP in terminal - it does not return anything. How to overcome this issue?

Do I must connect teensy to development board and short all button inputs to prevent the alarm from happening? Is there anything else I need to do?

For my application, I only use HALT, STOP and Cycle Start buttons. The other 2 ( Probe and Door) are not used. Since they are NC, do I must short them together to prevent them from causing fake alarms? Thanks in advance hoping to hear back soon.

[phil-barrett]

OK. Check out the First Run Grbl Settings in the wiki.

You can temporarily short Halt to ground. Then go in and change Grbl Setting ($14) to invert EStop. You might need to use MDI to do a soft reset ($X).

I recommend you move to a more recent build. The ethernet builds will work ok without ethernet and are more current. The Grbl Setting interface will change to a much more human usable form, worth it for that alone.

bCNC and grblHAL work fine together but make sure you have a recent one as older versions had issues. If you are running it on Linux (or RaspPi OS) make sure you have the correct tty selected (it's a common mistake).