4th Axis for foam cutter - please, please pretty please :)

[mumin50]

Hi all,

I started to build 4 axis cnc foam hot wire cutter, and got cnc shield v3. Looked good 4 drivers for stepper cheap, but...
I can't get GRBL to work with 4th axis
Help :)

In total i would need
4axis xyza
4stops xyza x- y- z- a-
1 wire enable best on PWM for mosfet
1 imput for temp read, or pot to regulate PWM for wire

Any advise

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edit:
Found this but no idea what to do about limit switch for a-
https://github.com/mlambm/grbl

[X3msnake]

GRBL in the UNO will only supports 3 Axis, no more memory space for any features. You need to look into GrblMega 4 Axis ot TinyG gnea/grbl-Mega#15 gnea/grbl-Mega#21 https://github.com/synthetos/TinyG 2018-01-26 12:07 GMT+00:00 mumin50 <notifications@github.com>:

…

Hi all, I started to build 4 axis cnc foam hot wire cutter, and got cnc shield v3. Looked good 4 drivers for stepper cheap, but... I can't get GRBL to work with 4th axis Help :) In total i would need 4axis xyza 4stops xyxa 1 wire enable best on PWM for mosfet 1 imput for temp read, or pot to regulate PWM for wire Any advise — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#364>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AKke-nDme_8mGjA3nG2jzmVBZMKVeBLvks5tOb_xgaJpZM4RuOCK> .

-- Com os melhores cumprimentos, Vinicius Silva

[mumin50]

ok than i need to take arduino mega and just connect it to cnc shild v3, or get ramps.
Pin-out i will find in cpu_map (info for all that search after me)

One thing strange is that probably all would fit inside UNO if other things would be not there: spindle, etc :) but whatever 5$ will be ok and finding things is more fun.

[X3msnake]

Maybe there is already a uno project for hot wire cutting Good thing about OpenSource is that if you find that there isn't you can always share back a modified version of GRBL Found this btw https://sites.google.com/site/foamcuttercnc/software https://sites.google.com/site/foamcuttercnc/electronics 2018-01-26 15:41 GMT+00:00 mumin50 <notifications@github.com>:

…

ok than i need to take arduino mega and just connect it to cnc shild v3, or get ramps. Pin-out i will find in cpu_map (info for all that search after me) One thing strange is that probably all would fit inside UNO if other things would be not there: spindle, etc :) but whatever 5$ will be ok and finding things is more fun. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#364 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AKke-oLbFFPOxKFBH39v_9jx8ADOI6KTks5tOfI9gaJpZM4RuOCK> .

-- Com os melhores cumprimentos, Vinicius Silva