hi, i was wondering if i could have a motor turn on for a set time when there is a current and then stop i.e if i connect a battery to it, it spins for say 5 seconds and then stops even though the battery is still connected
Thanks,
Mike
Is it a DC motor? What is powering the motor when the battery is not connected? Why do you want to do this? What is the battery voltage? What is the rated voltage of the motor?
that was just an example, it is a 10v dc supply from usb and the motor is aprox 6-9v and i want to do this so that the keyboard drawer opens when computer it turned on, it is quite small (only just fits a standard keyboard on)
oh yes.....
i have an old psu from a dell computer that i was going to use for multiple projects but i dont know what pins to connect the switch to and we no longer have the pc
i have a few wall plugs with various voltage/current but how would i get it to switch on when the computer is switched on?
wont the 555 astable circuit just turn it on then off then on then off..... untill the power is off?
that would be interesting, turn on the pc and watch the keyboard tray go in and out :lol:
wont the 555 astable circuit just turn it on then off then on then off..... untill the power is off?
that would be interesting, turn on the pc and watch the keyboard tray go in and out :lol:
ok thanks
thats what i was talking about when i said the molex connectors (got a bit mixed up with the voltages from the usb and cd connectors :roll: )