Rob
That first link is the same unit I am butchering, with Arduino PID temperature control and motor speed control. New gears and end plates under construction.
Malcolm
I don't suffer from insanity I enjoy it!
Mene, mene, tekel, upharsin
The writing is on the wall.
Ha-ktovet al ha-kir
--------------------------------------------
On Sat, 12/31/16, Rob roomberg@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
Subject: [Homebrew_PCBs] Temp upgrades of lam's Harbor Freight hack
To: Homebrew_PCBs@yahoogroups.com
Date: Saturday, December 31, 2016, 8:31 PM
thanks
I had not seen that dimmer hack yet.
Those pictures show the guts of the laminator.
Looks a lot like my APACHE AL9
http://www.learnmorsecode.com/laminator/al9.html
http://www.learnmorsecode.com/laminator/gbc/index.html
On 12/31/2016 02:38 PM,
Harvey
Altstadter hrconsult@...
[Homebrew_PCBs] wrote:
Rob,
The Harbor Freight unit is
"concentric" in the sense that
the heat is provide from all around the roller
assembly.
It is not concentric with either roller. There
are two
heaters mounted on opposite sides of the
rollers, and an
aluminum structure that is manufactured to fit
around the
rollers. The aluminum structure is actually
two pieces
that are separated to form the slots for the
paper path.
The BOM for this unit is mostly irrelevant.
By the time
the mod is done, not much of the original
circuitry or
wiring remains. The temperature control
thermoswitch is
removed,and replaced by the temperature
controller I
referenced yesterday, the thermal switch that
controls the
ready light is removed because it operates at
a
temperature that is irrelevant. What remains
is the small
circuit board that holds the ready LED and the
power
indicator LED, and the ON/OFF switch. This
board has two
rectifiers, two resistors and two LEDs. The
motor remains,
the heaters remain and the thermal fuse
remains.
There are some photos of the interior of the
laminator
here: https://www.flickr.com/photos/15304611@N03/sets/72157635447779272/%c2%a0
This mod is one that adds a dimmer in series
with the
motor, so most of the pics have to do with
modifying and
mounting the dimmer, but there a few that show
the motor,
the heater and the circuit board. The heater
control
thermoswitch is on the underside of the heater
assembly,
and not in view in these pics.
Harvey
On
12/31/2016 11:10 AM, Rob roomberg@...
[Homebrew_PCBs] wrote:
Really? This grabs my
attention.
What make and model?
Can you take a picture and share?
Is there an online parts list we can
eyeball that
shows how concentric heaters are
mounted?
On
12/31/2016 11:53 AM,
'David C. Partridge' david.partridge@...
[Homebrew_PCBs] wrote:
But,
but the heaters are concentric
with the
rollers (or at least they are in
my laminator)
so
stopped/forward/reverse
should make no
difference.
Dave
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