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inputs

Floating ADC inputs

 

Just been reading about floating analog inputs. I understand it a lot more than I did, thanks to you guys on here, but I'm still not 100% on the subject.

What I really need to know, is...

Do all the ADC inputs on my Picaxe 28X1 project board need jumpers on them? Even though I'm not using any analog inputs.

Thanks Lads,

The Bromz.

Dont keep your inputs floating!!!

I keep hearing and reading about the importance of making sure all the unused inputs are pulled low with a resistor. No reason is given other than "don't keep them floating because you'll get unpredictable results!"

If you take a look at the picaxe 28X board, you see that all the digital inputs are pulled low with a 10K resistor. I understand that this makes it easier to just connect a switch to the pins on the board without having to add an external resistor. The analog inputs are left floating, almost as if by design.