GRBL32 homing fail soft reset

Hi everyone, I'm new to the forum and I'm having issues homing my machine.

I use a grbl32 board from Makerfr with oepnbuilds control (great piece of software by the way!).

I installed my limit switches last week and was able to home the machine. Yesterday I tried again and received ALARM 6 and ALARM 3 messages when trying to home. That's supposed to be a soft reset but I haven't touched anything...

In the troubleshoot section of the controler I see that the reset button is always on but I don't have any buttons installed. When I measure the voltage on the reset pins of the board I get 0v (as opposed to 3.3v on the probe/hold/start pins).

Could it be an interference problem that's holding the reset pins low?
I test the homing with the VFD off.

The normally-closed limit switches work individually and when I enable the hard limits they do their job but homing doesn't work because of (I believe ) the reset issue.

This is what I get when I connect after power up:

[09:44:49] [ 3D Viewer ] WebGL Support found! success: this application will work optimally on this device!

[09:44:49] [ websocket ] Bidirectional Websocket Interface Started Succesfully

[09:44:57] [ connect ] PORT INFO: Port is now open: /dev/tty.SLAB_USBtoUART - Attempting to detect Firmware

[09:44:57] [ connect ] Checking for firmware on /dev/tty.SLAB_USBtoUART

[09:44:57] [ connect ] Detecting Firmware: Method 1 (Autoreset)

[09:44:57] [ ] ok

[09:44:57] [ connect ] Detecting Firmware: Method 2 (Ctrl+X)

[09:44:57] [ ] Grbl 1.3a ['$' for help]

[09:44:58] [ [external from hardware] ] OpenBuilds CONTROL received a RESET/ABORT notification from Grbl: This could be due to someone pressing the RESET/ABORT button (if connected)

[09:44:59] [ ] Grbl 1.3a ['$' for help]

[09:44:59] [ $$ ] $0=5 ;Step pulse time, microseconds

[09:44:59] [ $$ ] $1=255 ;Step idle delay, milliseconds

[09:44:59] [ $$ ] $2=0 ;Step pulse invert, mask

[09:44:59] [ $$ ] $3=2 ;Step direction invert, mask

[09:44:59] [ $$ ] $4=0 ;Invert step enable pin, boolean

[09:44:59] [ $$ ] $5=1 ;Invert limit pins, boolean/mask

[09:44:59] [ $$ ] $6=1 ;Invert probe pin, boolean

[09:44:59] [ $$ ] $10=1 ;Status report options, mask

[09:44:59] [ $$ ] $11=0.010 ;Junction deviation, millimeters

[09:44:59] [ $$ ] $12=0.002 ;Arc tolerance, millimeters

[09:44:59] [ $$ ] $13=0 ;Report in inches, boolean

[09:44:59] [ $$ ] $20=0 ;Soft limits enable, boolean

[09:44:59] [ $$ ] $21=0 ;Hard limits enable, boolean

[09:44:59] [ $$ ] $22=1 ;Homing cycle enable, boolean

[09:44:59] [ $$ ] $23=3 ;Homing direction invert, mask

[09:44:59] [ $$ ] $24=200.000 ;Homing locate feed rate, mm/min

[09:44:59] [ $$ ] $25=400.000 ;Homing search seek rate, mm/min

[09:44:59] [ $$ ] $26=250.000 ;Homing switch debounce delay, milliseconds

[09:44:59] [ $$ ] $27=15.000 ;Homing switch pull-off distance, millimeters

[09:44:59] [ $$ ] $30=24000.000 ;Maximum spindle speed, RPM

[09:44:59] [ $$ ] $31=1.000 ;Minimum spindle speed, RPM

[09:44:59] [ $$ ] $32=0 ;Laser-mode enable, boolean

[09:44:59] [ $$ ] $100=160.000 ;X-axis steps per millimeter

[09:44:59] [ $$ ] $101=160.000 ;Y-axis steps per millimeter

[09:44:59] [ $$ ] $102=400.000 ;Z-axis steps per millimeter

[09:44:59] [ $$ ] $103=100.000 ;unknown

[09:44:59] [ $$ ] $104=100.000 ;unknown

[09:44:59] [ $$ ] $105=100.000 ;unknown

[09:44:59] [ $$ ] $110=2500.000 ;X-axis maximum rate, mm/min

[09:44:59] [ $$ ] $111=2500.000 ;Y-axis maximum rate, mm/min

[09:44:59] [ $$ ] $112=1000.000 ;Z-axis maximum rate, mm/min

[09:44:59] [ $$ ] $113=1000.000 ;unknown

[09:44:59] [ $$ ] $114=1000.000 ;unknown

[09:44:59] [ $$ ] $115=1000.000 ;unknown

[09:44:59] [ $$ ] $120=80.000 ;X-axis acceleration, mm/sec^2

[09:44:59] [ $$ ] $121=80.000 ;Y-axis acceleration, mm/sec^2

[09:44:59] [ $$ ] $122=50.000 ;Z-axis acceleration, mm/sec^2

[09:44:59] [ $$ ] $123=200.000 ;unknown

[09:44:59] [ $$ ] $124=200.000 ;unknown

[09:44:59] [ $$ ] $125=200.000 ;unknown

[09:44:59] [ $$ ] $130=700.000 ;X-axis maximum travel, millimeters

[09:44:59] [ $$ ] $131=700.000 ;Y-axis maximum travel, millimeters

[09:44:59] [ $$ ] $132=180.000 ;Z-axis maximum travel, millimeters

[09:44:59] [ $$ ] $133=300.000 ;unknown

[09:44:59] [ $$ ] $134=300.000 ;unknown

[09:44:59] [ $$ ] $135=300.000 ;unknown

[09:44:59] [ $$ ] ok

[09:45:00] [ $I ] [VER:1.3a.20210311:]

[09:45:00] [ $I ] [OPT:MPHLBSW]

[09:45:00] [ $I ] [MSG:Using machine:MakerFr GRBL 32 bits Board V2 XYYZ]

[09:45:00] [ $I ] [MSG:Mode=AP:SSDI=GRBL_ESP:IP=192.168.0.1:MAC=C8-F0-9E-9E-2F-75]

[09:45:00] [ $I ] [MSG:No BT]

[09:45:00] [ $I ] ok

[09:45:00] [ $G ] [GC:G0 G54 G17 G21 G90 G94 M5 M9 T0 F0 S0]

[09:45:00] [ $G ] ok

[09:45:01] [ connect ] Firmware Detected: grbl version 1.3a on /dev/tty.SLAB_USBtoUART


Once again there's a reset happening for some reason. Any thoughts?

Thanks.