can linux cnc can cut a thread using only breakout board without using mesa card

I am new to linux cnc.
i am using cheap 5$ cnc breakout board and Tb6600 stepper drivers.
can i cut with threads with using only quadrature encoder without using expensive mesa cards.

YES
you can connect a simple Induktiv Switch or a low cost encoder 100ppr to the China BOB
with a 100ppr you will be able to perform realy good treading on a lathe
getting only one signal per rotation is working also you need to drive in and out longer saying 5 turns in 2 turns out
while 100ppr is near zero

200k is the limit of the inputs at this board
the 100ppr will be times by 4 as the edge trigger so you get 400signals per rotation

there are also 25ppr out but the 100ppr is the most used and cheepest

Homemade ones also work

Hi,
Thank you for reply.
i am using this bob and going to use this encoder 2000ppr.
can i use 2000ppr encoder for this

no a 2000ppr is way to mutch for this board
it is a 200k bord max so only 100rpm may be working but i guss it can only take 50rpm on a 2000ppr
while on a 100ppr it takes about 1000rpm

you can only use pin10 as the encoder as it is the fastest parport input

how to connect and there are coding for that?
pwm settings in stepconfig how to fill it?

pwm

you can use the phaseA
it is only needed
in
linuxcnc.org/docs/html/man/man9/encoder.9.html

if you like to get indexing for real RPM it is also to be connected here

here is a example
loadrt encoder
addf encoder encoder.capture-position servo-thread
addf encoder.update-counters base-thread

net rawquada parport.0.pin-10-in encoder.0.phase-A
net rawquadb parport.0.pin-11-in encoder.0.phase-B



YOU may see some jitter if so use Debouce
loadrt encoder
loadrt debounce cfg=2

addf debounce.0 base-thread
addf encoder encoder.capture-position servo-thread
addf encoder.update-counters base-thread

net rawquada parport.0.pin-10-in debounce.0.0.in
net rawquadb parport.0.pin-11-in debounce.0.1.in

net cleanquada debounce.0.0.out encoder.0.phase-A
net cleanquadb debounce.0.1.out encoder.0.phase-B

I think you need Index and A to do threading. For ridged tapping you need index +A + B

I'm just new to linux cnc.
I want to know how to add this code to my settings.