Difference between revisions of "Mini VFD"
(Created page with "A small Vacuum Flourescent Display I recovered from the skip at work. It is housed in a project box with a mains transformer - it use to have a mystery 9-pin serial port input b...") |
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It is housed in a project box with a mains transformer - it use to have a mystery 9-pin serial port input but it wouldn't work until we worked out that it was expecting a 5V TTL serial signal. | It is housed in a project box with a mains transformer - it use to have a mystery 9-pin serial port input but it wouldn't work until we worked out that it was expecting a 5V TTL serial signal. | ||
− | + | The Futaba Corp M202SD08G module is a 20 character x 2 line, 5x8 dot matrix display. | |
− | + | It has a European font with characters in the range from 0x20 (space) through the ASCII range and up to 0xFF with a bunch of Greek and Cyrillic characters. | |
− | ** http://docs-europe.origin.electrocomponents.com/webdocs/0d12/0900766b80d12d9a.pdf | + | * http://www.futaba.com/products/displays/app_notes/index.asp |
+ | * http://www.futaba.com/products/display_modules/module_products/character/index.asp | ||
+ | * http://docs-europe.origin.electrocomponents.com/webdocs/0d12/0900766b80d12d9a.pdf | ||
I've put a Xino into the box and I'm working on something amusing for it to do in the hackspace. | I've put a Xino into the box and I'm working on something amusing for it to do in the hackspace. | ||
+ | |||
+ | The module has a single 20 pin connector (2x10 0.1" pins) of which we only need connection for +5V, GND, serial data in and a busy line out. The module asserts the busy line when it is working but it is enough to just make short delays in your code! | ||
+ | |||
+ | I have a simple Arduino sketch that just shows each character. It uses NewSoftSerial on pins 2 and 3 as well as regular serial on pins 0 and 1 (on old Arduino0022) just for testing to see if NewSoftSerial is any good. | ||
+ | |||
+ | <div style ="height:200px;overflow-x:hidden;overflow-y:auto;border: 4px solid green;"> | ||
+ | <syntaxhighlight lang="cpp" line="GESHI_FANCY_LINE_NUMBERS"> | ||
+ | #include <NewSoftSerial.h> | ||
+ | #include <icrmacros.h> | ||
+ | |||
+ | NewSoftSerial mySerial(2, 3); | ||
+ | void setup() | ||
+ | { | ||
+ | Serial.begin(9600); | ||
+ | mySerial.begin(9600); | ||
+ | } | ||
+ | |||
+ | int b = 0x20; | ||
+ | |||
+ | void loop() | ||
+ | { | ||
+ | Serial.print(b, BYTE); | ||
+ | mySerial.print(b, BYTE); | ||
+ | delay(100); | ||
+ | b++; | ||
+ | if(b == 0xff){ | ||
+ | b = 0x20; // the first char in the VFD table | ||
+ | delay(1000); | ||
+ | } | ||
+ | |||
+ | } | ||
+ | |||
+ | </syntaxhighlight> | ||
+ | </div> |
Revision as of 22:00, 26 April 2012
A small Vacuum Flourescent Display I recovered from the skip at work.
It is housed in a project box with a mains transformer - it use to have a mystery 9-pin serial port input but it wouldn't work until we worked out that it was expecting a 5V TTL serial signal.
The Futaba Corp M202SD08G module is a 20 character x 2 line, 5x8 dot matrix display. It has a European font with characters in the range from 0x20 (space) through the ASCII range and up to 0xFF with a bunch of Greek and Cyrillic characters.
- http://www.futaba.com/products/displays/app_notes/index.asp
- http://www.futaba.com/products/display_modules/module_products/character/index.asp
- http://docs-europe.origin.electrocomponents.com/webdocs/0d12/0900766b80d12d9a.pdf
I've put a Xino into the box and I'm working on something amusing for it to do in the hackspace.
The module has a single 20 pin connector (2x10 0.1" pins) of which we only need connection for +5V, GND, serial data in and a busy line out. The module asserts the busy line when it is working but it is enough to just make short delays in your code!
I have a simple Arduino sketch that just shows each character. It uses NewSoftSerial on pins 2 and 3 as well as regular serial on pins 0 and 1 (on old Arduino0022) just for testing to see if NewSoftSerial is any good.