search

IRNAS / ToslinkCNC

CNC machine control modules with Toslink optical cables
Other
25 stars 11 forks source link

Axis other than xyz? #5

Open Jmjcoke opened 8 years ago

Jmjcoke commented 8 years ago

Can I route x,y,z thru toslink and then route an extruder axis directly to the stepper drive or will there be axis synchronization problems?

SloMusti commented 8 years ago

You can route the extruder independently of toslink, there will be a slight 5us delay, but that generally should have no effect on the machine operation at a hobby scale.

Jmjcoke commented 8 years ago

Hobby scale? I am building a printer with a 1500mm Y axis, 800mm dual X carriage, 900mm Z axis. I am going to wait until the firmware for a stacked tx card is done. I think I can get the second X axis to run thru the second card if the timing between the cards is synced.

On Tue, May 24, 2016 at 6:00 AM SloMusti notifications@github.com wrote:

You can route the extruder independently of toslink, there will be a slight 5us delay, but that generally should have no effect on the machine operation at a hobby scale.

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/IRNAS/ToslinkCNC/issues/5#issuecomment-221279379

SloMusti commented 8 years ago

For a 3D printer, the possible synchronization error between motors and extruder can be neglected, because you have more variance in the plastic extrusion so a few us delay can not be noticed.

Lets assume Hobby scale as machines which move with speeds less then 10m/s and have precision less then 1um or similar, this is very vague, but applies to most machines at reasonable cost.

Timing between the cars is synced, so you can use it as it is already.

Jmjcoke commented 8 years ago

Ok, 1um is small. I am good with 100-150 microns if I am lucky. I will let you know. I have access to a API XD6 at work, I know it is overkill but it will be fun to see how close it is.

On Tue, May 24, 2016 at 6:11 AM, SloMusti notifications@github.com wrote:

For a 3D printer, the possible synchronization error between motors and extruder can be neglected, because you have more variance in the plastic extrusion so a few us delay can not be noticed.

Lets assume Hobby scale as machines which move with speeds less then 10m/s and have precision less then 1um or similar, this is very vague, but applies to most machines at reasonable cost.

Timing between the cars is synced, so you can use it as it is already.

— You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub https://github.com/IRNAS/ToslinkCNC/issues/5#issuecomment-221283415

Joshua Coke

815-708-1281