Limit Switches, EStop and Spindle

Marsbar wrote: I just tried the circuit but all it does is limit the voltage change to something tiny.
with the existing setup I get a voltage drop from around 9 volts to close to 0.

Diode is reversed.

Swopped the Diode round and got a 0 to 1 volt rise when the switch is activated.
I'm assuming the previous wiring is correct without the resistor & diode as this gives near to 9 volts.

What is the voltage on the other inputs that are not connected to anything?

Simply buy NPN sensors and don't waste your time.

Also I didn't anderstand about

I tried your suggestion with the EStop line of code but then I cannot toggle the GUI power switch rendering everything inactive!

Now your E-stop switch is working fine?

If you always get 10V nevertheless, your variable "value" changes, it seems, that analog output is defective.

Then if you want to controll speed from LCNC, try to use discreate PWM signal to your freaquency drive.
Freaquency drive also could be operated by PWM signal (not analog output)

A resistor of 2.2 to 4.7K should do just fine.

Hi tommylight,

I get 9 volts