Mindboards

All of you thanks for your reply

just one last question is there a way to make the NXT brick produce a vibrating alert by using the motor or anything else ??

You could add one of these to the motor port through a resistor or voltage regulator. Don't know if the sensor ports could supply enough amperage to run one.

http://cgi.ebay.co.uk/Pager-and-Cell-Ph ... 41580e14d2

I'd use something more like this one. It is enclosed, so you don't have to worry about the mechanics of it as much. It is rated 75ma, so if you didn't use much of the sensor supply for other stuff, you could use it on a sensor port. To control it though, you would need a transistor to handle the power (use pin 5 to control the base, so you would turn in on and off like the light of the light sensor).

h-g-t and mattallen37 thanks for your help
but the thing is that i'm majored in software so i really have no knowledge in the hardware stuff.
Is it possible to connect this motor to the NXT? can you please tell exactly how to do it. i'm connecting 2 touch sensors and 1 ultrasonic sensor, so i'm not sure if the NXT can supply that much power?!

Sorry for annoying you with this much questions, and thanks again for your help..

Is there a reason not to simply use one of the lego motors, with an off centre rotor mounted on it? after all we are not exactly talking about a mass produced item here...

The NXT motors are MUCH larger more expensive and need a higher voltage. Imagine one inside your mobile phone.

gloomyandy wrote:Is there a reason not to simply use one of the lego motors, with an off centre rotor mounted on it? after all we are not exactly talking about a mass produced item here...

as h-t-g said the lego motor is much larger. BUT i'm really considering using lego motor because today i've tied one of the normal motor and i didn't figure out how to connect it. Also i tied the lego interactive servo motor, i rotate the motor forward and reverse to get the suitable vibration(but it didn't work as i wanted it:( ).so here is my questions:
- i have read some where over the internet that i can remove a part of the interactive servo motor to make it smaller and keep the part that produces the vibration.is this really possible?
- is there other lego motor that produces vibration other than the interactive motor?

*Sorry if my questions seems naive ,it is my first time working with the NXT.
THANKS..

I know the NXT motors are much larger, use more power etc. But then so is the NXT brick. This is just a prototype, so why worry about the size of the motors or anything else. If you ever really turn this into a real product then it is the time to worry about such things. At this stage it is all about testing the concept and finding out how well things work. You know that you can get smaller vibrating motors, so why worry about it...

Andy