christian l. / Mbed 2 deprecated lightdetector

Light detector with simple LDR and LCD display,there exist no calibration

Dependencies:   TextLCD mbed

Files at this revision

API Documentation at this revision

Revision 0:f1db4613080a, committed 2011-02-15

Comitter:
christian
Date:
Tue Feb 15 21:24:10 2011 +0000
Commit message:

Changed in this revision

TextLCD.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
diff -r 000000000000 -r f1db4613080a TextLCD.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.lib	Tue Feb 15 21:24:10 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37

diff -r 000000000000 -r f1db4613080a main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 15 21:24:10 2011 +0000
@@ -0,0 +1,23 @@
+#include "mbed.h"
+#include "TextLCD.h"
+
+TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d0-d3
+
+AnalogIn Vin(p20); // 3.3V Vout - 4K7 resistor - pin20 - LDR -100 ohm resistor - GND
+
+ main()
+ {  
+    while(1)  {
+    int x = 0;
+    
+     for (int i=0;i<=100;i++){
+     x = x + 1000*(1-Vin.read()); //build average from 100 values
+     wait (0.01);
+     }
+    x=x/100;
+      lcd.cls();
+      lcd.printf("light intensity\n");
+      lcd.printf("%d\n",x);     //value x is only relative,maybe anybody could calibrate it ? 
+     
+   }
+}

diff -r 000000000000 -r f1db4613080a mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Feb 15 21:24:10 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912