Basic Motor control
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Posts: 46,084
Hello,
I have a very basic question. I am looking to run a Radio Shack 12V
DC motor from my stamp. I only need it to actually have 3-5V
supplied to it. Can I wire the motor directly to the Stamp I/O pin
without a problem? I just need the motor to turn continuously for a
long period of time while the Stamp does other activities. I am
looking for the simplest (and cheapest) method possible, but I don't
want to risk damaging my stamp. Any suggestions would be
appreciated.
P.S. - What is the simplest method if I want to supply 3 volts to the
motor instead. I am not looking to dynamically change the voltage
supplied to the motor. After I determine the correct voltage (trial
and error), it does not need to change.
I have the Basic Stamp IISX. THANK YOU!
I have a very basic question. I am looking to run a Radio Shack 12V
DC motor from my stamp. I only need it to actually have 3-5V
supplied to it. Can I wire the motor directly to the Stamp I/O pin
without a problem? I just need the motor to turn continuously for a
long period of time while the Stamp does other activities. I am
looking for the simplest (and cheapest) method possible, but I don't
want to risk damaging my stamp. Any suggestions would be
appreciated.
P.S. - What is the simplest method if I want to supply 3 volts to the
motor instead. I am not looking to dynamically change the voltage
supplied to the motor. After I determine the correct voltage (trial
and error), it does not need to change.
I have the Basic Stamp IISX. THANK YOU!
Comments
>DC motor from my stamp. I only need it to actually have 3-5V
>supplied to it. Can I wire the motor directly to the Stamp I/O pin
>without a problem?
No. You will need a transistor or a relay to drive it as the Stamp
cannot supply the required motor current. To reduce the motor
voltage, you can increase the size of the base resistor of the transistor
so that it doesn't turn on quite so hard. Also, be sure to use a snubber
diode across the motor. There are many references to motor control
methods out there - check the Parallax website for links or manuals
with details.
Carl
more than an LED, you need a relay or transistor to control the device.
Original Message
> I have a very basic question. I am looking to run a Radio Shack 12V
> DC motor from my stamp. I only need it to actually have 3-5V
> supplied to it. Can I wire the motor directly to the Stamp I/O pin
> without a problem? I just need the motor to turn continuously for a
> long period of time while the Stamp does other activities. I am
> looking for the simplest (and cheapest) method possible, but I don't
> want to risk damaging my stamp. Any suggestions would be
> appreciated.