REDSTONEPEDIA › Circuits › Timers and pulse multipliers

Timers and pulse multipliers

Timers and pulse tools: a 5-second light from one button press, however long the button is held (one-shot timer); a light that stays on 10 seconds after you step off a pressure plate (stay-on timer); a door that ignores accidental taps (hold-to-activate); a dispenser that fires exactly 3 times per press (burst); a clock slowed down (clock divider).

Filter them in the index

The pictures show each design with its inputs and a lamp on its output; the block counts leave those out.

Several pulses per press (burst)

Turns one press into an exact number of pulses.

2 pulses per pressPulses per press
2 to 64 pulses per press · 7 to 25 blocks
pictured, 2 pulses: 6 ticks (0.3 s) apart · starts after 12 ticks (0.6 s) · fits in 5×2×1
6 versions1 block wide

Slows a clock down (clock divider)

The output goes on and off once for every few input pulses, even from a fast clock.

slows by 3Clock slower
every 3rd to 7th pulse · 18 to 32 blocks
pictured, every 3rd: fits in 2×6×5
3 versions

One-shot timer (monostable)

Gives one output pulse of a set length for each press, however short the press. All are 6 versions.

on for 32 ticks (1.6 s)One-shot timer
on for 12 to 116 ticks (0.6 s to 5.8 s) · restarts on every press · 21 to 36 blocks
pictured, 32 ticks (1.6 s): starts after 4 ticks (0.2 s) · fits in 6×4×3
on for 34 ticks (1.7 s)One-shot timer
on for 14 to 118 ticks (0.7 s to 5.9 s) · ignores presses while on · 25 to 44 blocks
pictured, 34 ticks (1.7 s): starts after 12 ticks (0.6 s) · ready again after 40 ticks (2 s) · fits in 3×2×8

Stay-on timer (off-delay)

Keeps the output on for a set time after the input turns off.

stays on 990 ticks (49.5 s) afterStay-on timer
stays on 4 to 990 ticks (0.2 s to 49.5 s) after · 8 to 28 blocks
pictured, 990 ticks (49.5 s), needs a long input: needs an input of at least 1,280 ticks (1 min 4 s) · made of comparator, hopper, redstone torch · fits in 2×3×2
9 versions

Hold-to-activate: ignores short presses (on-delay)

Turns the output on only once the input has been on for a set time, so shorter presses are ignored.

must be held 8 ticks (0.4 s)Hold-to-activate
must be held 8 to 12 ticks (0.4 s to 0.6 s) · 9 blocks
pictured, 8 ticks (0.4 s): its output is 6 ticks (0.3 s) shorter than the input · fits in 3×2×3
3 versions

Rapid fire while on (gated clock)

Pulses the output at a set beat for as long as the input is on.

a pulse every 4 ticks (0.2 s)Rapid fire while on
a pulse every 4 to 20 ticks (0.2 s to 1 s) · 3 to 12 blocks
pictured, 4 ticks (0.2 s): 2 ticks (0.1 s) pulses · first after 2 ticks (0.1 s) · made of observer, sticky piston · fits in 2×1×3
5 versionslies flat (1 block high)

A card that comes in several sizes lists every size, with the best design of each, on its page.