tvdbon Posted May 18, 2005 Report Share Posted May 18, 2005 I've got a Input/Output board that is connected to my pc for a project I'm working on. What I want to do is to connect a LDR (light dependent resistor) to one of the analogue inputs. I'm guessing I can't just connect a ldr and a 12v power supply together and run it to the analogue input on the io board. Any ideas ? The circuit should make use of a 12 volt powersupply. ??? Quote Link to comment Share on other sites More sharing options...
EdwardM Posted May 18, 2005 Report Share Posted May 18, 2005 Hi tvdbonone way is to connect the 12v supply, a resistor and the LDR, and use the voltage developed across the LDR as the analogue input. You should be able to find an datasheet/application note on the web and from that derive the necessary resistor value.Best of LuckEd Quote Link to comment Share on other sites More sharing options...
tvdbon Posted May 18, 2005 Author Report Share Posted May 18, 2005 Can it really be that simple? I'll play around with it and see what I can get. Thanks for the idea. If anybody have any other ideas then please feel free to let me know.Thanks ! Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.