This code selects between the routines for the GLCD or the char.
display.

A new variable was introduced to allow fan animation on the GLCD.
Add additional float to string conversion routine without sign
character. This is used for the coordinates visualisation on the GLCD.

This contains the menues, status screen etc...

1. Marlin welcome screen
2. Status screen symbols 3 Extruders, heated bed, animated fan logo 1
3. Status screen symbols 3 Extruders, heated bed, animated fan logo 2

Makes the lib compatible with most LCDs

Font size 6x10 with feedrate symbol & Font size 6x9.

https://code.google.com/p/u8glib/
Universal Graphics Library for 8 Bit Embedded Systems

Adding Maker's Tool Works heated bed thermistor

Sorry for that. This does not lead to compile errors. I removed the
unwanted code to make it clean.

Fix step rate bug (especially for retraction)

These definition contain also the definition for the graphics LCD.

Definition for the graphic LCD are already in it, they will not harm the
configuration as they are only defined constants

Add STB board support to Marlin (next step towards graphic LCD implementation)

Fix step rate bug (especially for retraction)

Generated with createTemperatureLookup.py. The old table crapped out at
270C, which was a problem for polycarbonate.

The motherboard 35 is a config without bed with this pins setting :
D8 Extruder
D9 Fan
D10 Controller Fan

Disable the high current output and wait a little before to turn off,
because the interrupting capacity of the PSU is unknown.
Could be a function if needed by other.

From the prepare menu, accessible when is not printing, you have the
possibility to turn off the PSU when is on et vice versa.
From the host, you can turn off or turn on the PSU then the menu is
updated accordingly.
From the LCD message, the printer status is reported ready or off
respectively when the PSU is on or off.

This change also handles the case where the pause/stop/restart button on
the VIKI is not used. Make LCD I2C buzz sound the same as the normal
buzz (300ms is too long for quick feedback).

These definition contain also the definition for the graphics LCD.

Definition for the graphic LCD are already in it, they will not harm the
configuration as they are only defined constants

Marlin with ATmega1284p sanguino support under Arduino 023

This change allows fan outputs to automatically turn on/off when the
associated nozzle temperature of an extruder is above/below a threshold
temperature.
Multiple extruders can be assigned to the same pin in which case the fan
will turn on when any selected extruder is above the threshold.
It also makes the M42 command compatible with the M106/M107 command.
The majority of the logic in this change will be evaluated by the
compiler at build time (i.e, low code space requirements).

Refactor configuration to try to make items clearer (what defines a
panel vs what is user changeable).

Added the optiboot bootloader, uses only 512kB of FLASH
Includes .hex file is for 20MHz µC Clock and serial speed of 57k6

This is the actual Sanguino release for Arduino 023.
It has full ATmega1284p support.

Reference:
https://code.google.com/p/sanguino/downloads/detail?name=Sanguino-0023r4.zip&can=2&q=

ATmega644P 16MHz, ATmega1284p 8, 16, 20MHz

Also fix compile time check in Marlin.pde

This includes refactoring the buttons code to remove a large amount of
non-pin dependent duplication from pins.h.

Hotend offset handling for multi-extruder machines

Removed incorrect LiquidCrystal_I2C Library