I want to have six pins 2 rows 3 columns and I want to control every pin alone how can I get it? 
Please feel free to provide details.
If I need to control six mini rods to move up and down what should I use. I mean imagine you have a plate 2X1 cm how can I put 6 mini rods on it and control the movement of them up and down.
What is a "mini rod"?
I mean like a pin; small piece of metal.
Try to imagine that we haven't a clue about what it is you want to do or on what scale (except it must fit into 1x2cm) or at what speed/resolution.
Now, describe your problem.
Ok, I will try to explain more detail.
imagine you have in front of you a plate of 1X2 cm, the plate has 6 holes, I want to have one small pin in each hole, for each pin i want to be able to control the moving of the pin up and down using small motor or something like that, for example if we labeled the pins from 1 to 6 I want to be able to move the pin number 1 up and all other pins to go down in through the holes in the plate.
I hope it is clear now.
What's the spacing? Can you arrange 6 small solenoids in a 2x3 grid to move the pins up & down?
You'll need a transistor to buffer the current needed to drive the solenoid, a power supply capable of supplying the current needed for 1 to 6 pins, and a diode across each solenoid to keep from damaging it's drive transistor.,
Thank you all for your replies, the solenoids is the Idea that I seek, however, I need something smaller if exist. and if you can tell me if there is any specific library in arduino programming that I should use to activate the solenoids, and if there is any other hardware part I should use.
can I use UNO board?
Thank you.
How small?
How much throw is needed?
How much force per rod?
Edit
6 tiny servos connected to stainless steel push wires which are held in place by bushings.
eg.
digitalWrite() will do what you want.
But each solenoid requires a driver circuit, the standard relay drive circuit is probably fine.
But you need to provide much more detail...
How big are the pins ("small" isn't a measurement, "5mm" is a measurement).
How heavy?
Can they be made from a magnetic metal?
How far to they need to move?
How fast do they need to move?
What force do they need to resist when proud of the surface?
What is the spacing between pins?
What are you actually trying to do?
mhmibaisi:
If I need to control six mini rods to move up and down what should I use. I mean imagine you have a plate 2X1 cm how can I put 6 mini rods on it and control the movement of them up and down.
If you have access to a good machine shop you can make this. If not you are dreaming.
Such a device was used in the very first dot matrix printers. A set of 9 solenoids were mounted behind a plate with 9 pins like you describe, but the 9 were all in a vertical line. The solenoids took up way too much room to attach directly to the plate, so they were each attached to a sheathed cable and the sheath was fastened to the solenoid mounting plate. One end of the internal cable was attached to the solenoid armature and the other end to the pin in the plate.
When one or more of the solenoids was active, the pin was pressed out of the plate. Solenoid off, the pin retracted.
Look for solenoids with a threaded end so they can all be mounted together on a metal plate. I don't know where you will find the cable. You may need to learn to silver braze to make the connections.
Paul
Seems OP is talking about a braille cell.
Leo..
mhmibaisi:
I hope it is clear now.
No.
Make a simple drawing to illustrate the machine and post a photo of the drawing. See this Simple Image Guide
An essential part that you have not mentioned at all is the space available for the actuating mechanism. Make sure to include that in the drawing.
And tell us what this mechanism is intended to do.
...R
Just because the pins need a particular spacing doesn't mean the actuators need to share the same pitch.
Bowden cables, perhaps?
AWOL:
Just because the pins need a particular spacing doesn't mean the actuators need to share the same pitch.
Bowden cables, perhaps?
Ah ha! That was what I was trying to describe. I never knew they had a name, but everything has a name, I guess.
Thanks, Paul