@Alan... pin "float" means that at any given time the signal pin on a port can be high or low... It floats so to speak back and forth.... You could use a pull-up resistor to keep the pin high or a pull-down resistor to keep the pin low... Both would stop the pin from "floating"... The analog port basically just measures resistance (or a voltage level between 0V - 5V)... So if you were to say touch one finger to the analog signal pin and then with another finger touch the ground on the same port you should see the value change in the analog control window... Actually haven't tried it, but that's what I am assuming will happen, anyway...

EDIT Just tried it and it does drop the analog value.... interestingly enough, but not surprising the harder you squeeze the two wires between your fingers the lower the analog value goes...

So you could use this as a crude method to determine if your claw is crabbing something conductive like a cat or a human hand or even something way more conductive like metal....

@Richard R I have used copper tape as a flex sensor it works pretty well...just need to apply the values and script it. A lot of trial and error. Now that the topic is up why only 8 adc ports? Since I barely use servos at all it would be nice to have more analogs for all kinds of sensors...I actually use all of them....

Thanks @Richard R and @Doombot. I will play with this.

Alan