friends , i want to build a crane -------more like a tower which are used on dockyards for loading and unloading the containers from the ship and placing them on the ground.
for this purpose i need to build an intelligent crane that is capable of lifting the object/release the object , decide the position of the object, where it need to be placed .
i will attach this assembly to the microcontroller so that lifting/unloading,deciding the position will be done by the controller,now the main thing is to construct this crane.
see, as i wish to the lift the object i need to first drop down the cable which'll lift the object so a motor to drop down the cable i.e DOWN MOTION is required,
then i need something that will "hold" the container firmly to the cable, i think electromagnet will be the best for this,so i need to wire this electro-magnet to the microcontroller to magnetise/demagnetise it, is this possible ?............................Q.1
ok.if it's possible and once it holds the container firmly,now i need to lift this container and for this purpose i should pull-up the cable so that container is indirectly lifted i.e UP MOTION is required the same motor used for DOWN MOTION can be used for this motion also, is this possible ? ..................Q.2
IF YES THIS IS THE FIRST MOTOR I"LL REQUIRE FOR UP/DOWN MOTION ,isnt'it?..........................................................Q.3
now i need to decide the position of the container where it is to be placed .
for this ,i think the best would be FORWARD/REVERSE MOTION of the trolley on the crane with the help of which i can move the container "back" and "forth" .i.e to decide the position either the container will be unloaded from the extreme outer end of the crane or from the extreme inner end .
NOW THIS IS THE SECOND MOTOR I'LL REQUIRE ,isnt it ?......................Q.4
BUT NOW THE ASSEMBLY ON WHICH I 'M USING THIS "up/down" and "forward/reverse" motion is static then the containers would be placed only in a particular space so now i need a 360 degree rotataion of the crane so that the container can be lifted/unloaded, placed ANYWHERE within the reach of the crane .....................understood .
FOR THIS A THIRD MOTOR IS REQUIRED ?.......................Q.5
Q.6 now my question is, can the wiring of electromagnet, for "holding "the container at the time of pulling the container upwards and then "releasing" the container from the electromagnet at the time when the container reaches down be POSSIBLE ?
Q.7 and can these three motors be connected to the microcontroller ( can this be possible that the 360 degree rotation be controlled by the USER and only the microcontroller controls "up/down' & "forward/reverse" motion so as to reduce the complexity )..........pls reply