Homebrew PCBs

Sorry for typo.
 "As you'll see original image is perfect" should be "As you'll see original image is not perfect."
Cheers 
Volkan

v_sahin <v_sahin@...> wrote:                             Hi All,
 I spent couple of months(~4 months) to design my own flat bed inkjet
 printer and finally I could get some printouts. It is based on Epson
 inkjet head and X-axis mechanics. I designed required drive
 electronics, head drive signals, servo control, frame buffer and micro
 controller to communicate and manage the circuit. On PC side I
 developed RIP (raster Image Processor) that is used to convert bmp
 image to the printers frame buffer format and interface program to
 control the printer. In this design all time critical jobs are done by
 fpga. Microcontroller supports minimum basic commands such as x/y
 positioning, servo control, frame buffer download, piezo drive
 waveform download and activate inkjet firing, it is also responsible
 to do USB interface. The remaining control is done by the control
 program running on PC side.  
 I did only a few experiments and saw that 4/4 (trace width / space) is
 possible to do if I can do uniform etching ( under etching is also an
 issue).
 I'll try to upload printed image and original bmp image used during
 printing. As you'll see original image is perfect. Later I'll do some
 performance tests and try to post the results. This  printer can do
 720x720 dpi and images that I'll upload are printed at that resolution. 
 Uploaded images will be under 
 http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/Epson_inkjet_Volkan/
 
 Note: I don't know whether the details of the design is an off topic
 or not for this group. I need feedback from Steve.
 
 Cheers,
 Volkan
 
 
     
                                       

       
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