About

LCD_Config is a hardware and software solution to programm the Multi Wii Copters on flying field, also it contains the possibility to log data while flying.

Features

works for Multi Wii Software 1.5 (stable) and 1.6 beta
Communicates to the MultiWii software over serial line like the GUI
Same parameters changeable as in the GUI
Output of values for sticks, gyro, acc, and ESCs (excluding graphical views)
Logging onto SD card

Prerequisites

an Arduino board Arduino Boards
Arduino 022 (for SD Card support)
a LC Display, either using parallel 4 Wires or ShiftReq control (based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs.)
Some keys, some cable
latest Arduino Sketch for LCD_Config

Download

V1.5: http://www.rc-heli-fan.org/download/file.php?id=92207

Version History

V0.8 to V1.4 see forum

V1.5

check trailing 'A' char in serial communication to detect frame errors,
KEY_LEFT cancels reading when no serial connection is present (important to reset wrong settings!)
optimization of format routines (merged two routines, invalid values are displayed as ###)
bugfix in logging (logMode=-1 was stored in flash, so logging was permanently disabled)

Hardware

LCD Keypad Shield

This is the original LCD used with the LCD_Config app:

Schematics: http://www.nuelectronics.com/estore/index.php?main_page=project_lcd

4bit parallel Display and voltage divider keys

Hardware Keys

If you like to use normal hardware keys on digital ports use this schematic to connect them:

http://arduino.cc/en/Tutorial/DigitalReadSerial

Then remove the comment signs // in front of line:

#define HWKEYS

Define the ports to use here:

// Input pins of the hardbuttons: (used when HWKEYS is defined)
#define HW_RIGHT    10
#define HW_UP        9
#define HW_DOWN     11
#define HW_LEFT      8
#define HW_SELECT    6

It is possible to controll everything with out the Select key, so you don't need this key.

Shift Register LCD

Using 3 wires interface for the display:

http://www.arduino.cc/playground/Code/LCD3wires

Adjust the ports used here:

  ShiftRegLCD lcd(3, 2, 4, 2);        // (Datapin, Clockpin, Enablepin or TWO_WIRE [, Lines [, Font]]])

SD card connections

pin 13   SCK   SPI clock   
pin 12   MISO   SPI master in, slave out
pin 11   MOSI   SPI master out, slave in
pin 10   SS   SPI slave select

LED for status

Red: Error, app halted Yellow: blinking means I/O, permanent means waiting for user input Green: logging

LEDs are connected through 150Ohm resitors.

Ports defined here:

// include routines to show the state of the application with three leds 
// (red: error, yellow: busy/waiting for input, green: logging)
#define STATUS_LEDS

#define RED_LED      A1
#define YELLOW_LED   A3
#define GREEN_LED    A5