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We have built a number of large rapid pulsers for Floor D of Fosco's server's community wiki.

D, obviously, is for disco.

Disco seen from the deejay's point of view, with two jukeboxes. I just wish there were more than two records.

The soft lightning is done by a number of extended rapid pulsers. Basically, I took the basic structure of a rapid pulser and extended it sideways with further torches and powder. It works.

Close up of the underlying structure.

The nice thing about this is that it can run indefinitely without any external input (originally, we were fiddling with carts). The bad thing about this is that it does even when unneeded, which causes light updates to lag elsewhere.

A solution would be to put a sensor at the deejay's spot. When the deejay (or an heavy object) is in place, it's disco time. Otherwise, the pulsers should stop.

(A nicer solution could be had if jukeboxes emitted power while they played songs. Alas...)

How can we stop the pulsers?

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  • 1
    Those images are dark, I can't see much
    – tzenes
    Nov 30, 2010 at 16:02
  • @tzenes Unfortunately, that's a limit of redstone torches.
    – badp
    Nov 30, 2010 at 16:14
  • 5
    is disco a needed tag?
    – Ronan
    Nov 30, 2010 at 17:26
  • but photoshop doesn't have that limitation :) I can brighten up the images for you if you want.
    – Oak
    Nov 30, 2010 at 17:41
  • @Oak feel free :)
    – badp
    Nov 30, 2010 at 17:45

2 Answers 2

Reset to default
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Just connect a switch to one of the wires. This will cause the wire to function as an OR gate, so the clock (or "pulser", as you call it) will only oscillate when the switch is off.

[Edit] By request, here are some example pictures:

4-Clock with switch 5-Clock with switch

However, the switch placement is irrelevant: you could place the switch literally anywhere in the circuit.

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  • Could you make a diagram of this?
    – Resorath
    Nov 30, 2010 at 18:24
  • That definitely works. I think if you have just a clock and connect the output to an AND gate it works with less resources (one input being the lever and the other the pulsar) however it causes more lag.
    – APCoding
    Jul 21, 2015 at 22:37
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You can use this, I have tested it.

Switch-activated pulser

grey dot = switch

red dot = torch

yellow square = block

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  • Nope :) The rapid pulser is pictured here.
    – badp
    Nov 30, 2010 at 17:45
  • @badp updated answer
    – Ronan
    Nov 30, 2010 at 18:32
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    That picture is for the 5-gate clock/pulser, not the rapid (4-gate) clock/pulser. The idea for both is the same, however: you are adding an AND gate somewhere on the circuit so it does not oscillate when the switch is off. As I mentioned in my answer, it is even easier to add an OR gate - just add a single switch to anywhere in the circuit. The circuit will then only function when the switch is off.
    – BlueRaja - Danny Pflughoeft
    Nov 30, 2010 at 20:36

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