The concept of an 'auto leveler' makes great sense, and I decided to give it a try.
EDIT - see current posting
- EMC on Linux (the version numbers escape me).
- CadSoft Eagle 6.3.0 on Windows 7
- Testing the PCB-GCODE with the auto leveller pcbgcode_tags_2.0-alpha1-r68.zip from the PCB GCODE forum on Yahoo
- CNC machine is homebuilt based on the BuildYourOwnCNC machine
- I have created my own 'anti backlash' nuts that allow me to place SMD devices with 50mil lead pitch
That's about as fine as this old man can solder, so it's good enough for now.
Day one, wastedAfter two half-days of getting frustrated, I turned to the forum, Art was very prompt to respond. I needed to move the autoleveller code outside of C:\Program Files(X86). I moved them to my D:\ drive and progress was made.
Lesson 1: Install the AutoLeveller files NOT in the Program Files directory. (for Windows 7 at least)
Setting the initial entries into all the PCB-GCODE-SETUP fields was helped by Dan, MoDFI on the Forums. This is a good starting place
Download the new math.h if you are using Eagle 6. Replace the old one by renaming it 'math_old.h' - don't delete anything!
How the autoleveller worksMoved to my web page: Autoleveler
Milling the boardIt took me a couple of attempts to figure out the flow.
- Align the board and do the top etch
- Drill the bottom two mounting holes (0.125"). These are used when
the board is flipped to align for back milling
- mill bottom traces
- mill outline of board
- drill holes
Also, drill the two alignment holes after probing/milling - the probing/leveling process stops if you happen to probe within one of the mounting holes.
The boardI designed a board (CADsoft Eagle) modeled loosely after the "Arduino" concept - a small, basic CPU "motherboard" into which 'shields' could be plugged. I am currently playing with the Microchip PIC processor family, so I made a modified PICduino setup. The motherboard gives me a +5 and optional +3.3V supplies, connection for the ICSP (In Circuit Serial Programmer) a PIC 16F777 44 pin, TQFP package, optional crystal and a power indicator. There is a LOT of space left over for whatever I can think of for Rev 01. Traces are typically 0.016" unless there is a powerful reason to go smaller (not on this board).
|Top (Click for larger image)|
|Bottom (Click for lager image)|
|CPU detail (Click for larger image)|
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