There are already products out there that will do that. How many things do
you want to control, and how much are you thinking about spending? Would
card or electronic key access work?
The other issue, which was mentioned before, is turning on the power to the
tool remotely. *IF* you control the power through the stamp, you also need
some sort of power switch on the tool that cannot be left on. ie Bubba flips
the power switch, nothing happens, he leaves the switch on, goes off to log
in, when he logs in power is restored and the tool starts running with no
one around.
Original Message
> OK, so rereading you original post (remember that?), here's an idea:
>
> take the power switch to the motor, and rewire it so it's a low-power
> switch that toggles between ground and 5 volts. this will be read by
> the basic stamp.
>
> the basic stamp will drive a relay which will control the motor.
>
> to use the machine initially, the operator logs in or whatever. the
> basic stamp records what's needed. the operator then goes to work, and
> the basic stamp sits and monitors the input switch. if it's flipped on,
> the basic stamp flips the relay which turns on the motor. if it's
> flipped off, the basic stamp flips the relay which turns off the motor.
>
> if the user logs out, the basic stamp (and consequently the motor)
> doesn't do anything until someone logs in again.
>
> if the switch is turned off for ten consecutive minutes, the user is
> logged out automatically.
>
> if the operator tries to use it, the basic stamp will give some sort of
> indication that he/she has been logged out, and will have to log in.
> the user will then have to log in, and either turn the switch on, or
> cycle it from on to off to on in order to get the motor on.
>
> does this sound like something that would work?
Comments
you want to control, and how much are you thinking about spending? Would
card or electronic key access work?
The other issue, which was mentioned before, is turning on the power to the
tool remotely. *IF* you control the power through the stamp, you also need
some sort of power switch on the tool that cannot be left on. ie Bubba flips
the power switch, nothing happens, he leaves the switch on, goes off to log
in, when he logs in power is restored and the tool starts running with no
one around.
Original Message
> OK, so rereading you original post (remember that?), here's an idea:
>
> take the power switch to the motor, and rewire it so it's a low-power
> switch that toggles between ground and 5 volts. this will be read by
> the basic stamp.
>
> the basic stamp will drive a relay which will control the motor.
>
> to use the machine initially, the operator logs in or whatever. the
> basic stamp records what's needed. the operator then goes to work, and
> the basic stamp sits and monitors the input switch. if it's flipped on,
> the basic stamp flips the relay which turns on the motor. if it's
> flipped off, the basic stamp flips the relay which turns off the motor.
>
> if the user logs out, the basic stamp (and consequently the motor)
> doesn't do anything until someone logs in again.
>
> if the switch is turned off for ten consecutive minutes, the user is
> logged out automatically.
>
> if the operator tries to use it, the basic stamp will give some sort of
> indication that he/she has been logged out, and will have to log in.
> the user will then have to log in, and either turn the switch on, or
> cycle it from on to off to on in order to get the motor on.
>
> does this sound like something that would work?