PhilippeTeuwen: Reverted edits by JasonAnderson (talk) to last revision by PhilippeTeuwen

2016-03-02T15:01:59Z

Reverted edits by JasonAnderson (talk) to last revision by PhilippeTeuwen

Can't load revision 10010

at 12:51, 2 March 2016

2016-03-02T12:51:17Z

minor updates

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PhilippeTeuwen: Reverted edits by Etegohy (Talk) to last revision by PhilippeTeuwen

2010-11-24T20:38:47Z

Reverted edits by Etegohy (Talk) to last revision by PhilippeTeuwen

Can't load revision 6905

at 08:23, 24 November 2010

2010-11-24T08:23:04Z

Can't load revision 6758

PhilippeTeuwen: Created page with 'Back to Arduino page. LiquidCrystal is great to control a LCD but it doesn't cover this little extension allowing to control a vacuum-fluorescent display (VFD) by software. …'

2009-10-19T20:03:15Z

Created page with 'Back to Arduino page. LiquidCrystal is great to control a LCD but it doesn't cover this little extension allowing to control a vacuum-fluorescent display (VFD) by software. …'

New page

Back to [[Arduino]] page.

LiquidCrystal is great to control a LCD but it doesn't cover this little extension allowing to control a vacuum-fluorescent display (VFD) by software.
<br>Here is how to do:
<br>It is using the library
* http://www.arduino.cc/en/Tutorial/LiquidCrystal
You can download the code [{{#file: testVFD.pde}} as testVFD.pde]
<source lang=c>
/*
LiquidCrystal Library - demo
Extension to control brightness of a Samsung 16T202DA1J VFD
*/

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// Adds definitions for VFD:
#define VFD_25pc 0x03
#define VFD_50pc 0x02
#define VFD_75pc 0x01
#define VFD_100pc 0x00
void vfd_brightness(int brightness) {
// unfortunately lcd._displayfunction is private so we've to redefine it
int _displayfunction = LCD_4BITMODE | LCD_2LINE | LCD_5x8DOTS;
lcd.command(LCD_FUNCTIONSET | _displayfunction | brightness);
}

void setup() {
// set up the LCD's number of rows and columns:
lcd.begin(2, 16);
lcd.print("hello, world!");
}

void loop() {
vfd_brightness(VFD_100pc);
delay(200);
vfd_brightness(VFD_75pc);
delay(200);
vfd_brightness(VFD_50pc);
delay(200);
vfd_brightness(VFD_25pc);
delay(200);
vfd_brightness(VFD_50pc);
delay(200);
vfd_brightness(VFD_75pc);
delay(200);
}
</source>

Arduino VFD brightness - Revision history

PhilippeTeuwen: Reverted edits by JasonAnderson (talk) to last revision by PhilippeTeuwen

at 12:51, 2 March 2016

PhilippeTeuwen: Reverted edits by Etegohy (Talk) to last revision by PhilippeTeuwen

at 08:23, 24 November 2010

PhilippeTeuwen: Created page with 'Back to Arduino page. LiquidCrystal is great to control a LCD but it doesn't cover this little extension allowing to control a vacuum-fluorescent display (VFD) by software. …'