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Multiple LDR's not working


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#1 Clusta

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Posted 20 March 2012 - 10:16 AM

Hi,

When I hook up 1 LDR sensor it works fine and the readings I get are OK. When I add another 1 or 2 LDR's then their values are random but the first one continues to work.

Can someone point me in the right direction?

The LDR's I'm using are: http://www.maplin.co...-35963?doy=17m7

I've tried various resistor values too.

I'm using firmware version: 4.1.0.6

many thanks

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#2 GlenS

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Posted 20 March 2012 - 12:40 PM

Clusta, Quick look at the breadboard - if its anything like mine, there is no V+ connection through to the right-hand pair of LDR devices. I'm basing that on the break in the red and blue lines imprinted on the breadboard, on mine that signals a break in the copper rail underneath. Is this your issue? Glen

#3 Clusta

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Posted 20 March 2012 - 01:20 PM

DOH! Cheers Glen. Thats exactly what it was.




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