Here are the v2.1 files for the drawbot Ive been working on. (The files are below) Special thanks to Laen from http://dorkbotpdx.org/wiki/pcb_order for the help learning to export gerbers and check them with GerbV.
This was inspired by trying to help a friend with some hardware issues with the Makeitlast contest #3. It just turned into a project after all the work that went into it 
Image from documentation soon to be posted
“Released under the Creative Commons Attribution-ShareAlike License (3.0)”
http://creativecommons.org/licenses/by-sa/3.0/us/
Thanks to Adafruit for getting me threw the legal jargon for the stuff above.
confirmed working. THE POWER SUPPLY IS TIP POSITIVE ! there is no reverse current protection.
Hardware source
Schematic I should mention just use 1uf ceramic caps I think I messed up their values in the schematic.
Gerbers to order pcbs (about 45$ for 3 boards)
Parts list with digikey P/N where available
Board readme This document pertains to an upcoming release of a new firmware and the DBC app. Key mappings are not the same as the firmware below. 10/14/11
quick assembly tips:
- Don’t forget to connect the grounds above the LDO (seen in picture above)
- Put sockets on the PIC, eprom , not the hbridges.
- The led, the flat side is the bottom , if the pcb silk screen is right side up. It is marked with a line.
- PIC pin one faces up . eeprom pin one faces down.
- Solder the ICSP right angle header from the bottom so the pin one indicator is visible as seen above .
- The led will NOT light when power is applied to the (UN-programmed) board , it is not a power indicator but rather a debug led connected to an io pin , controlled by firmware.
Applications to use the drawbot
Picture Decoder by Colin Faulkingham (MIT license see source code)
Drawbot control app v1 by Jayson Tautic for v1.0 precompiled hex below
FIRMWARE DOWNLOADS
Current version 1.0 precompiled hex
The files below are an upgrade to the version 1.0
They do not work properly with Drawbot control at this time.
PIC Firmware first version 1.x
Pre-Compiled hex file (1.x )
pixels used below
Pixels used for Tautic logo below.
It is interesting to me, no one commented on the Right side , how the first line ends , it goes up (and over an extra pixel width each time) .
Second attempt at a circle.
First drawing. 24x18
Testing the EPROM
Quick pic of the logic comming out of the EPROM , reading page zero which is in its blank state (all 255)
And a quick readback after writing 1 to the first page.
Quick screen shot of v2.1 using my Logic Only showing one stepper output...
Here is a short demo of the v2 greenwire board half mounted and working. It has since been mounted to the wall with the motors 6 feet across
Fast Tube by Casper
August 12th, 2011 at 1:25 am
Q:
Did i break comments last time the spammers came.