Dwell after M3

Takes a few seconds for my quill to spin up after M3/M4.   

Could probably monkey with the VFD and make it better, but it generally seems to me I should be able to specify some delay after commanding a speed change to the spindle.

Tried to add a G4 through CamBam, but couldn't get that to work right.

Then I thought, generally, machine specific delays shouldn't be specified from the CAM program.   This delay should really be part of the machine controller.

I looked a bit and couldn't find anything in LinuxCNC.   My guess its there and I missed it.   Anybody have some clues for me??

Thanks.

G4 P5 gives a 5sec delay, and works for me.

I could easily do that if I were editing the G code by hand.

I desire to take the output of CamBam and use it without editing.

In CamBam, is if I go into the machine postprocessor and add G4 P5 to the G3 definition, CamBam produces something like
G3
G4 P5
S1000

Which I don't think will do what I desire. Tried this several different ways and couldn't get the S1000 before the G4 P5. But maybe it will? I haven't tried it on the machine.

If you send your postprocessor i can take a look. Second option, setup spindle ramp in hal. But edit the PP should be easier.

I'm using the nominal LinuxCNC.cbpp.   It's not very big and I'll just append the text to the end of this.

In this LinuxCNC.cbpp, there is no definition for G3.   I guess CamBam picks it up from some default.

<?xml version="1.0" encoding="utf-8"?>
<PostProcessor xmlns:xsi="www.w3.org/2001/XMLSchema-instance" xmlns:xsd="www.w3.org/2001/XMLSchema" Version="0.9.8.0">
  <PostFile>{$comment} Made using CamBam - www.cambam.co.uk {$endcomment}
{$header}
{$mops}
{$footer}
</PostFile>
  <Header>{$comment} {$cbfile.name} {$date} {$endcomment}
{$comment} Post processor: LinuxCNC {$endcomment}
{$tooltable}
{$cbfile.header}
{$units} {$distancemode} {$velocitymode} {$cuttercomp(off)}
{$arccentermode} 
{$toolchange(first)}
{$clearance}</Header>
  <Footer>{$clearance}
{$spindle(off)}
{$cbfile.footer}
{$endrewind}
</Footer>
  <MOP>{$comment} {$mop.name} {$endcomment}
{$toolchange}
{$velocitymode} {$workplane}
{$mop.header}
{$spindle} {$s}
{$blocks}
{$mop.footer}
</MOP>
  <Drill>{$g81} {$_x} {$_y} {$_z} {$r} {$_f}</Drill>
  <DrillDwell>{$g82} {$_x} {$_y} {$_z} {$p} {$r} {$_f}</DrillDwell>
  <DrillPeck>{$g83} {$_x} {$_y} {$_z} {$q} {$r} {$_f}</DrillPeck>
  <NumberFormat>0.0####</NumberFormat>
  <MinimumArcLength>0.0001</MinimumArcLength>
  <ArcCenterIncremental>G91.1</ArcCenterIncremental>
  <ArcCenterAbsolute>G90.1</ArcCenterAbsolute>
</PostProcessor>

I found something here 
cambamcnc.com/forum/index.php?PHPSESSID=...18q6s31&topic=9266.0
There should some menu to enter G4 P5 and in PP line "{$spindle} {$s}" delete "{$s}" 
But this kind of PP i see first time.

for Andy's suggestion, here are some examples.
linuxcnc.org/docs/html/examples/spindle.html