My Projects

You are here: start » electronic » boards » shield » xc4454

My Projects

User Tools

Site Tools

You are here: start » electronic » boards » shield » xc4454

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
electronic:boards:shield:xc4454 [2026/10/16 07:12] – tonyelectronic:boards:shield:xc4454 [2026/10/16 09:35] (current) – tony
Line 9: Line 9:
 ^Brand|Duinotech| ^Brand|Duinotech|
 ^Clone of|{{https://dfimg.dfrobot.com/enshop/image/data/PDF/Manual/DFR0009_Manual__10_cn.pdf|DFRobot LCD Keypad Shield (2009)}}| ^Clone of|{{https://dfimg.dfrobot.com/enshop/image/data/PDF/Manual/DFR0009_Manual__10_cn.pdf|DFRobot LCD Keypad Shield (2009)}}|
 +^Other designations|DFR0009|
 ^Arduino compatibility|Uno| /* Uno, Uno R3, Mega, Mega2560 etc */ ^Arduino compatibility|Uno| /* Uno, Uno R3, Mega, Mega2560 etc */
 ^Type|LCD with keypad| ^Type|LCD with keypad|
Line 14: Line 15:
 ^Current| | ^Current| |
 ^Software|| ^Software||
 +
 +^Arduino pin usage||
 +^Pin^Shield function^
 +^A0|Buttons|
 +^D4|DB4|
 +^D5|DB5|
 +^D6|DB6|
 +^D7|DB7|
 +^D8|RS|
 +^D9|E|
 +^D10|Backlight|
  
 ===== Overview ===== ===== Overview =====
 {{electronic:boards:shield:xc4454.png?800|Overview}} {{electronic:boards:shield:xc4454.png?800|Overview}}
 ===== Features ===== ===== Features =====
-  *+  * 16 Columns x 2 rows of text display 
 +  * Blue backlight 
 +  * 6 Push button keypad (labelled select, up, down, left, right and reset) 
 +  * Contrast control 
 +  * Display uses standard 4bit LCD library
  
 ===== Design Flaws ===== ===== Design Flaws =====
Line 28: Line 44:
 From the published schematic I can see that the Arduino D10 drives the base of a transitor directly (with no current  limit resistor), this may be the problem he describes. From the published schematic I can see that the Arduino D10 drives the base of a transitor directly (with no current  limit resistor), this may be the problem he describes.
  
-[[https://www.stubmandrel.co.uk/16-electronics/236-dfrobot-lcd-keypad-shield-backlight-fix|Suggested fix and light level control.]] +  * [[https://forum.arduino.cc/t/warning-to-users-of-some-vendors-lcd-keypad-shields/94673/2|Fault description]] 
-https://www.instructables.com/Arduino-LCD-Backlight-Fix/+  * [[https://web.archive.org/web/20121101083518/http://arduino.cc/forum/index.php/topic,96747.0.html|Follow up discussion]] 
 +  * [[https://www.stubmandrel.co.uk/16-electronics/236-dfrobot-lcd-keypad-shield-backlight-fix|Suggested fix using a resistor, and light level control code.]] 
 +  * [[https://www.instructables.com/Arduino-LCD-Backlight-Fix|Suggested fix using a diode.]] 
 \\ \\
 ---- ----
Line 40: Line 59:
  
 ====== References and Additional Resources ====== ====== References and Additional Resources ======
-  * {{https://web.archive.org/web/20110925063452/http://www.dfrobot.com/wiki/index.php?title=Arduino_LCD%26KeyPad_Shield_(SKU:_DFR0009)|RFRobot LCD Keypad Wiki}}+  * {{https://dfimg.dfrobot.com/enshop/image/data/PDF/Manual/DFR0009_Manual__10_cn.pdf|DFRobot LCD Keypad Shield (2009)}} 
 +  * {{https://web.archive.org/web/20110925063452/http://www.dfrobot.com/wiki/index.php?title=Arduino_LCD%26KeyPad_Shield_(SKU:_DFR0009)|DFRobot LCD Keypad Shield Wiki}}
   * {{https://gock.net/blog/2013/arduino-library-for-df-robot-16x2-lcd-keypad-shield|Arduino Library for DF Robot 16×2 LCD Keypad Shield (Andy Gock)}}   * {{https://gock.net/blog/2013/arduino-library-for-df-robot-16x2-lcd-keypad-shield|Arduino Library for DF Robot 16×2 LCD Keypad Shield (Andy Gock)}}
  

Page Tools

electronic/boards/shield/xc4454.1792134768.txt.gz · Last modified: 2026/10/16 07:12 by tony
CC Attribution-Share Alike 4.0 International Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International