Archive for the ‘PIC’ Category

555 Timer Calculator

Monday, June 18th, 2007

There are a lot of these out there but in true DIY spirit I wrote my own. You may need to download the .NET runtime libraries to run it.


Postscript for Encoder Wheels

Thursday, May 17th, 2007

From ranchbots

%! Postscript utility for printing an encoder wheel
/inch {72 mul} def % #points/inch (don't change me)
/size 0.5 inch def % radius of encoder wheel
/segments 16 def % number of segments (black and white)
/angle 360 segments div def
{ /radius exch def
/angle_s exch def
/angle_e exch def
newpath 0 0 moveto
0 0 radius angle_s angle_e arc
} def

1.0 inch 1.0 inch translate
0 1 segments {
360 segments div rotate
angle 0 size wedge
2 mod 0 eq {1} {0} ifelse
setgray fill
} for



Thursday, November 17th, 2005

Wow, these people make nice boards! The boards for my LED Sign project arrived today and I am quite impressed. This is the first time I have used the internet PCB service at though I have used their free CAD software to layout schematics for a couple of years. Their software is easy to use and the boards are very sharp. I’ll get some pictures up soon.

Update: Pictures are on the LED Sign project page