Multiplexing Light dependant resistors

Forum 2005-2010 (read only) Hardware Interfacing
1

I'm thing about a little project that will need possibly 12 LDRs (2 per analogue input) and it's been a while since I delved into electronics so I need a refresher!

Would this work?

+5v
^
|

Pull up resistor

|
|
----------------------------[Analogue in
| |
| |

LDR 1 >LDR 2
<= ><=

| |
\ |
|----[Select 1 |
/ |
|
| |----[Select 2
| /
| |
| |
GND GND

Thanks in advance, Easty.

2

That looks like it would work for me. :smiley:

3

Thanks Grumpy_Mike, I should have apologised about the diagram!