Re: URGENT: NQC problem

It sounds as if your problem is being caused by the motor being 'back driven' when switched off. Possible solutions:-

1) Don't turn the motor power completely off - reduce the power level to the point where everything stays put.

2) Implement a lock or latch that engages to hold position

3) Use gears with higher friction to drive things up and down - for instance, worm gears do not usually suffer from being back driven

Have fun ! Dave

I have a problem with mindstorm motor, I create a tower who go up and > down and now, I must that the tower (when I want) stay up because > since today when I shutdown the motor (OUT_A) the tower didn't stay up > but fall down! Can I use some function? like Float? I didn't find > anything in Internet¨! > Thankyou! > Wizche

Posted Via Nuthinbutnews.Com Premium Usenet Newsgroup Services

---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **

----------------------------------------------------------

formatting link

Reply to
Dave Garnett
Loading thread data ...

Hi Dave, thanks for the answer, the problem is that the minimal power (1) is too much, the rotor must not turn but only stay in position, or extremely, to turn but with the minimal strong! Do you know the solution in NQC? I didn't know so good the NQC, maybe I didn't see a function that can help.

Wizche

Reply to
Wizche

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.