Homebrew PCBs

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

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On Sat, 12/31/16, Rob roomberg@ptd.net [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/ 
               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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