Multi Wii Copter LCD Config

About

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

Features

• works for Multi Wii Software 1.5 (stable) and 1.6pre
• serial communication with the MultiWii software
• same parameters changeable as in the GUI
• presents sensor data (gyro, nunchuk, acc, barometer), receiver input channels, abd output channels (ESCs and servos)
• simple graphic output for servo channels and inclination angles
• logging to SD cards
• profile management to test different settings

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

(Note: the version of the LCD_Config does not correspond to the version of the MultiWiiCopter software. All listed versions of the LCD_Config work with both MWC v1.5 and v1.6pre.)

V1.50: http://www.rc-heli-fan.org/download/file.php?id=92207

V1.60: http://www.rc-heli-fan.org/download/file.php?id=92263

V2.0 beta: http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=315#p1186998

V2.0: http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=375#p1190414

Version History

V0.8 to V1.4 see [1]

V1.50

• 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)

V1.60

• Min/max values show up again (optional)
• Fixed some issues on compiling with different options

V2.0 beta

• Adaptation to MWC version 1.preter6 (new config "Flying Wing", new data format)
• Changed arrangement of parameters in state "0 - Config"
• Bug 'logMode=-1' finally solved

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

Status LEDs

Primary goal of this option is to give some visual feedback on the internal state when no LCD is connected. Three LEDs are supported, named RED, YELLOW and GREEN (like a traffic light).

The red LED signals errors (slow flashing, e.g., when the application is halted), or recoverable exceptional states (fast flashing, e.g., the app is waiting for input from the serial connection).

Yellow LED: blinking means I/O, it is permanently on when the app is waiting for user input

The green LED signals logging.

LEDs are connected through 220-500 Ohm resistors to some of the unused ports (default: A1 - Red, A3 - Yellow, A5 - Green).

Port settings are 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

State chart

Simplified state chart of the LCD Config app, part 1

Simplified state chart of the LCD Config app, part 2

Gallery

Schematics as PDF,.PLT, Image

http://www.rc-heli-fan.org/viewtopic.php?p=1185353#p1185353

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=105#p1178184

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=120#p1180305

Here some links to already build and working boxes

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336#p1166512

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=60#p1171774

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=60#p1171802

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=105#p1180155

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=120#p1180731

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=135#p1180893

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=135#p1181027

http://www.rc-heli-fan.org/viewtopic.php?f=255&t=80336&start=135#p1181131