Hi!

I want to active or desactivate a relay when i'm reading a variable resistance. When i read 50 ohm, i need to active a relay. When i read 160 ohm i need to activate another relay.

I tried iwth a picaxe chip with readadc10. But i think it's a too low value...

Any idea?

Thank you
david

 

Are you trying to measure these resistances while they are still in the circuit or are they uninstalled in a board?

hgmjr

 

What is the total resistance of your variable resistor?

 

Are you trying to measure these resistances while they are still in the circuit or are they uninstalled in a board?

hgmjr

The resistance is changed with hardware switch (like a button). I can take two wires at the end and read it with my ohmmeter.

 

What is the total resistance of your variable resistor?

minimum is 24 OHMS
maximum is 170 OHMS