got a wee job for someone with touch sensor

[Alasdair Ryan]

i made this today thinking about a crane moc in the future and having a warning sensor if you are lifting to much ,i don't have a touch sensor my self i it would be good i some one could try this for me ,you can put a light brick on the end or a siren what ever you have.

some notes:

the blue brick is were the sensor should go

the yellow liftarm can be moved up or down this will hit the sensor end, this should not touch the sensor when the 1/2 inch bush at end rests on the ground

there should be a little movement so that when thing is lifted it should touch the sensor

the axle should be able to slide freely in the cage

the whoal thing will pivot in to place

heres some pis of mine

[zyrex]

I would love to try, but unfortunately my lego are over one hour away from me :( Hopefully someone else here can help

[Jetro]

What do you propose to hook the sensor up to?

[Silcantar]

I'm not sure this would be useful as a force limiter, but you could use it to automatically shut off a motor when it has reached the limit of travel. There is a way to hook up the wires to a touch sensor and a motor such that they are in series and the touch sensor works as a switch. The sensor would have to be normally pressed for the motor to run, though, so you would have to alter the design somewhat.

[Alasdair Ryan]

I'm not sure this would be useful as a force limiter, but you could use it to automatically shut off a motor when it has reached the limit of travel. There is a way to hook up the wires to a touch sensor and a motor such that they are in series and the touch sensor works as a switch. The sensor would have to be normally pressed for the motor to run, though, so you would have to alter the design somewhat.

do you have any ideas on makeing a load sensor

What do you propose to hook the sensor up to?

siren or light brick

Edited September 12, 2010 by Alasdair Ryan

[Silcantar]

do you have any ideas on makeing a load sensor

You would need to use a rubber band or a spring to provide some resistance. When the load is heavier than the resistance provided by the spring/rubber band, you could make it so that the touch sensor is released.

[Countdown]

That's a nice idea to add a 'two block' sensor. Never thought of adding one on a lego crane. Might have to borrow your idea someday!

I don't have a tough sensor brick, let me look into it and I'll come back.

[Alasdair Ryan]

You would need to use a rubber band or a spring to provide some resistance. When the load is heavier than the resistance provided by the spring/rubber band, you could make it so that the touch sensor is released.

i try ed with bands and i did not achieve much i thought this system wold work but i do not have a touch sensor and thought some of you lot could try it and see if it worked

That's a nice idea to add a 'two block' sensor. Never thought of adding one on a lego crane. Might have to borrow your idea someday!

I don't have a tough sensor brick, let me look into it and I'll come back.

thanks am full of ideas