Re: Inconsistent scaling with Samsung ML-2165
2012-06-28 by godzilera
It s not a question of just adjusting the scaling; the problem is that it s inconsistent. Sometimes it would come out too small, sometimes it would come out
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Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-28 by jeremy youngs
i chimed in on this once before and it seems to me the obvious is go buy some pipe, some mdf and a stepper kit from ebay and build a router, yuo will be amazed
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-28 by Harvey White
... Then do an interrupt based system, and check for flags from interrupting conditions. The tactical difficulty in a delay loop is that if the external (and
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
There are GCode interpreters for AVR, PIC and ARM devices already. Just Google them. But most commercial packages use the PC software to convert Gcode to step
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
If you re using a PC I tend to prefer one of the LINUX RTOS flavors. Even Ubuntu has an RTOS kernel. The ENC2 folks use it for their distro. If your using an
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by David Mitchell
This was one of my original ideas, perhaps to port GRBL (which runs on a very similar AVR chip) to the Cricut s hardware.
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by James
... I rather like the idea of using Gcode since it s so ubiquitous in the world of CNC. Seems like some of the modern microcontrollers ought to have more than
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by DENNIS SHELGREN
I ve always been interested in RTOS s, mostly because I m used to programming before the whole multitasking thing anyway. Did you have one in mind for a usb
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
No, what I am describing is sending the step data not the GCode which has to be interpreted and compiled into step commands. It can be done using a RTOS but
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Tony Smith
... used ... Just as can ... steppers the ... be ... PC ... be ... transfer ... Under ... in ... provide ... But on ... to the ... That s the grumble people
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
USB can be used in an interrupt driven system. For example a timer can be used to to generate a periodic interrupt to trigger the usb data to be sent. Just as
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Tony Smith
... directly ... use ... of ... parallele port is ... speed. That s what I said, you need extra (and smart) hardware to use USB. There is no OS that can
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
The typical approach for using a paralleled port is to write to the port directly without buffering. Most implementations of stepper controllers using USB use
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Tony Smith
... So speed ... real-time ... such ... Well, yes & no. When people say USB is the problem they are comparing running a mill using the parallel port, and then
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Randall Morgan
USB 2.0 is used on a lot of direct stepping desktop and bench top mills. So speed of the USB interface isn t an issue. What is an issue is the need for true
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by Harvey White
... USB doesn t work well for stepper control. It s not routed through the appropriate layers in the operating system to give you a real time way of
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-27 by James
... I bet it is. The widely available FTDI USB to serial chips will do 250kbps, just how fast does it need to be? That said, I m not sure why you d want to do
Re: [Homebrew_PCBs] Inconsistent scaling with Samsung ML-2165
2012-06-26 by DJ Delorie
When I did TT, my process was to print a calibration board and go through all the steps until just before etching, and measure the pcb itself to find out
Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by tda7000
Interesting idea... For convenience, I load all my good paper from the front feeder in my printer, which as I think about it, has a very straight path all the
Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by Jim
Hi Pete, Inconsistencies of scale have been a problem with every printer I ve ever used. I don t make a lot of pcbs, let alone double sided, but the problem
Re: [Homebrew_PCBs] Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by KeepIt SimpleStupid
Somewhere, I read that one of the things that a thicker paper setting does on an HP printer is to slow down the paper feed to primarily prevent jamming.
Re: [Homebrew_PCBs] Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by Donald H Locker
Note to self - no Samsung ML-2165 printer. Donald. -- *Plain Text* email -- it s an accessibility issue () no proprietary attachments; no html mail / ascii
Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by godzilera
Hello everyone, thanks for the responses. I forgot to mention that I was only getting scaling problems in the Y direction. Speed of the paper through the
Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by Dennis
I use multiple printers and suddenly all of them seemed to develop a similar problem to yours at the same time. Turned out it was my son s A/C cycling and
Re: [Homebrew_PCBs] Inconsistent scaling with Samsung ML-2165
2012-06-25 by kabowers@NorthState.net
... recently decided to try making a double sided board with SMD (.5mm TQFP) parts. So, I went out and bought a new inexpensive Samsung ML-2165 printer. The
Re: Inconsistent scaling with Samsung ML-2165
2012-06-25 by tda7000
Scaling seems to be a problem with many (or all) laser printers. But I have not had too much of an issue with it with my old Lexmark T522. For toner-transfer,
Inconsistent scaling with Samsung ML-2165
2012-06-24 by godzilera
Although I have been making successful single-sided PCBs for a while now, I just recently decided to try making a double sided board with SMD (.5mm TQFP)
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-24 by Mike
Yes, most of these hobby CNC cutters use a solenoid (electromagnet) for the Z-axis.....which is all that s realy needed. All you d need is to mount the spindle
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-24 by Mike
Yes, most of these hobby CNC cutters use a solenoid (electromagnet) for the Z-axis.....which is all that s realy needed. All you d need is to mount the spindle
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-23 by jeremy youngs
... now ... system check out instructables homemade cnc from printer. I aggree not all will communicate but those without coded processors will [Non-text
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-23 by Tony Smith
*scratches head* Yes, LinuxCNC & pals output step & dir via the parallel port, but the printer/plotter/router doesn t understand it. You need to bypass some or
RE: [Homebrew_PCBs] (unknown)
2012-06-23 by Ronald Cody
You can use CamBam it will read Gerber and output G-code. It s $150 so not too bad. Ron Cody KF7MKY You learn from your mistakes...Today I hope not to learn
Re: EPSON Artisan, which Model #'s ?
2012-06-22 by Richard
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Raymundo Vega
It should work fine if you set the serial port driver in your computer to use software flow control (XON/XOFF) and in Cricut program the receiving function
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Mike
Lots of good suggestions in these posts - thanks. First, I ve called my project CirCut (~circuit) as opposed to Cricut (one of many CNC paper cutters available
(no subject)
2012-06-22 by hossein
i have a cnc but i dont know how to use it for pcb isolation
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by hossein
... hi dont you use spindel motor? it seems you use magnet for z axis
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Mike
Right now, about 12-15 mils. Hopefully better when I figure out where the cutter departs from the commanded vectors. Cheers, Mike
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by David Mitchell
Getting the Cricut machine to talk HPGL is a project I was working on for several months last year. I based my work on an extension of the Freecut firmware
Re: EPSON Artisan, which Model #'s ?
2012-06-22 by AlienRelics
Start here: http://tech.groups.yahoo.com/group/Inkjet_PCB_Construction/ And here: http://techref.massmind.org/techref/pcb/etch/directinkjetresist.htm Traffic
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Mark Lerman
Mike, How wide is the blade you are using? I ve used cnc to make pcbs, but it isn t as easy as it might seem: Noise, dust, frequent tool changes, uneven
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by jeremy youngs
linuxcnc outputs step/dir directly and is configurable and needs no signal conditioning before a l293/97 etc. conditioning or coding is only necessary for
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Tony Smith
... you d have ... use some ... it ... directly ... you ... , or bus ... as per the ... has to lose ... Well, what I meant was there will be some electronics
Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Mike
More on this subject. New Cut n Drill experiment video here http://www.youtube.com/watch?v=L14yUxxipfU&feature=player_embedded Next time I ll use a smaller
EPSON Artisan, which Model #'s ?
2012-06-22 by Richard
howdy folks! In reading the Epson-modification pages at massmind et al, I see mention of an Artisan model being an excellent choice...but when I hit
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by jeremy youngs
yes here!!!!!! and they are talking to it that means linuxcnc will control it !!!! ... -- jeremy youngs [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Eldon Brown
Has anyone reverse engineered the CirCut? Or, is there a known problem in doing it? I think the Bus Pirate
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by jeremy youngs
LinuxCNC (or anything else for that matter) won t talk to the CriCut, you d have to add your drivers and bypass all the electronics. Most of these things use
RE: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by Tony Smith
... do this. ... ascii? ... probotix has ... ubuntu software ... alongside ... stepper ... this ... steps ... still ... you ... LinuxCNC (or anything else for
Re: [Homebrew_PCBs] Re: Produce Quick & Cheap PCBs with a CNC paper cutter
2012-06-22 by jeremy youngs
if you can get the pin out from your printer I am certain linux cnc will do this. however I donot know what code the cricut uses if its just gcode or eia or