I'd like to make a piston go up and down just once (then I'll make this thing repeat forever), how do I do that? How do I give the piston the order to go down after it went up in a single tick?
Minecraft – How to make a piston go up and then down
minecraft-java-editionminecraft-redstone
Related Solutions
If you're willing to put the button on the bottom block, this isn't too hard. Try something like this:
Here's another shot from the top:
And here's one from the back:
When either the button is pressed or someone stands on the pressure plate, the door will open.
If you want the button to be at eye level, you can make a minor modification, as suggested in the comments:
This will allow you to move the button up one block, at the cost of two repeaters. Keep in mind that this will add a (very) small delay to the circuit, but considering it's a button, this might even be an advantage.
One easy(ish) solution is to use a sand door. You can make them as wide as you would like, and about 3 high.
Here's one design that should work with the XBOX edition:
If you want to do some searching, what you want is a tileable triple piston extender for Minecraft 1.0.1. Or, if you only need it to be 2 high, then you only need a double piston extender, which is quite an easy design.
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Best Answer
You want to use a monostable circuit. This turns any input pulse into a pulse with an exact length (in ticks). Hook this up to your clock and you can pulse the piston on for 1, 2, or however many ticks you want.
By tweaking your clock speed and monostable circuit you can get very precise piston pulses, e.g. 1 tick on, 5 ticks off; 3 ticks on, 7 ticks off etc.
sethbling, noted redstone genius, gives a very good guide to monstable circuits, as well as other redstone components in this video: