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Project 9 – Analog Sensor: Light detection using LDR
- by tonynwk88
- August 10, 2011
- LDR, Light Sensor, PIC, SK40C, Tutorial
A photoresistor or light dependent resistor (LDR) is a resistance decreases with increasing incident light intensity. It can also be referred to as a photoconductor. In here, we going to do a simple connection of LDR and display the ADC and Voltage value on LCD.
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5 thoughts on “Project 9 – Analog Sensor: Light detection using LDR”
hello
the code has been compiled successfully , but the voltage is not changing . its fixed .
hari25,
Try use GO_DONE instead of GODONE.
The causes is from different version of Hi Tech C Compiler.
If you still experience the same problem pls discuss in our technical forum.
for me it showing this error when i tried compiling. plz advice me
Build C:\Users\HK\Desktop\Project_9\Project_9 for device 16F887
Using driver C:\Program Files\HI-TECH Software\PICC\9.83\bin\picc.exe
Make: The target “C:\Users\HK\Desktop\Project_9\adc.p1” is out of date.
Executing: “C:\Program Files\HI-TECH Software\PICC\9.83\bin\picc.exe” –pass1 C:\Users\HK\Desktop\Project_9\adc.c -q –chip=16F887 -P –runtime=default –opt=default -D__DEBUG=1 -g –asmlist “–errformat=Error [%n] %f; %l.%c %s” “–msgformat=Advisory[%n] %s” “–warnformat=Warning [%n] %f; %l.%c %s”
Error [192] C:\Users\HK\Desktop\Project_9\adc.c; 117.1 undefined identifier “GODONE”
Make: The target “C:\Users\HK\Desktop\Project_9\lcd.p1” is up to date.
Make: The target “C:\Users\HK\Desktop\Project_9\Project_9.p1” is up to date.
********** Build failed! **********
Hi, this project is based on SK40C PIC Start-Up Kit. You can get the product at http://www.cytron.com.my
The other components are available in Cytron’s online store too =)
Hi, tonynwk88
Would you mind to share more details of this LDR project with me? Is there a ‘project kit’ available for sale?