Newbie, working on a 2 axes lathe, w/threading, Cannot get $I to show lathe or sync.

[Chris-DeH]

Good afternoon folks.
Old guy here trying to re-control a lathe that had MACH 3 on it. I have heard so much good about grblHal and thought I would give it a go. I am stuck pretty bad getting the software configured. Here is a bit more detail.

I'm building a custom lathe on a Pico 2 W (RP2350) using a local build of grblHAL. I’ve successfully mapped my pins in my_machine.h, but my $I report remains empty (no LATHE or SYNC), and G33 returns error:20. I've tried forcing LATHE_MODE and SPINDLE_SYNC_ENABLE in config.h and via CMake flags, but the core seems to ignore them. Has anyone successfully enabled Lathe/Sync on the RP2350 platform recently?

[terjeio]

Did you see this in config.h? Anyway, it is easier to just set $32=2 for lathe mode.
Spindle sync remains disabled until configured, have you done that?

[Chris-DeH]

Having failed numerous times, I will give that a go. That doesn't sound too difficult, even for an old guy. Once I have a modified version of the MAP file edited, how do I get it to the place where the web builder can use it?

[terjeio]

Once I have a modified version of the MAP file edited, how do I get it to the place where the web builder can use it?

It is not possible for end users to modify the Web Builders board maps short of creating a PR and have that accepted.
From your initial comment I assumed you compiled locally, but since obviously not I have just modified the board map and uploaded it to the Web Builder. This was possible since it was a backwards compatible change.

[Chris-DeH]

WOW! THANK YOU VERY MUCH!!!!
Actually I was compiling locally, but believed I kept doing something wrong because nothing seemed to work. That is why I switched back to hoping I could use the web builder. I will give the new uf2 a try within the next couple days and you know how it goes. THANKS AGAIN, VERY MUCH APPRECIATED.

[Chris-DeH]

Hello terjeio,
Okay, I built a new uf2 just now,
RP2040 (Pi Pico & Pi PICOW)
Generic
Adjusted settings as follows, selecting these
Virtual Uart
Lathe UVW mode
Spindle sync
Log for tuning

Generated the UF2
copied it in a PICO W

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I tried #32=2
Got error 59

Sent command $$
there is no setting available for 32?

$$
$0=5.0
$1=25
$2=0
$3=0
$4=7
$5=0
$6=0
$9=1
$10=511
$11=0.010
$12=0.002
$13=0
$14=0
$15=0
$16=0
$17=0
$18=0
$19=0
$20=0
$21=0
$22=0
$23=0
$24=25.0
$25=500.0
$26=250
$27=1.000
$28=0.100
$29=0.0
$30=1000.000
$31=0.000
$33=5000.0
$34=0.0
$35=0.0
$36=100.0
$37=0
$38=0
$39=1
$40=0
$41=0
$42=2
$43=1
$44=4
$45=3

I believe I have done everything correctly on my end. Any ideas?
Chris

[terjeio]

LATHE_UVW_OPTION enables lathe mode by default and it cannot be changed so $32 is disabled