Craft with a NOT gate for Nighttime sensor and Full Chest Detector.

Logic moduleEdit


A redstone pulsar is basically a compact redstone clock.

Right click pulsar to open it's GUI.

  • The delay is how many ticks it will wait until it pulses.
  • The hold time is how long it will pulse for.
  • The total amount of ticks is displayed below.

Just to clarify, a tick is 0.1 seconds.

T, D and RS flip-flop gatesEdit

These three integrated circuits are flip-flops.

T gate divides clock signal by 2, and has two reset inputs on sides. It can be used for counting, slowing down clock signal or other things.

D gate has 3 inputs and one output: RESET, DATA and CLOCK

  • CLOCK - when this turns on, DATA value is put to OUTPUT
  • RESET - sets output to zero and erases the memory
  • DATA - input data

It may look a bit complicated, but you can quickly learn how it works - put 3 levers next to the gate, and a indicator to output, and play with it.

RS is one of the most basic circuits. It has two inputs (green and red), which turn the output on and off. You can use it to control something by two buttons - start and stop. One-shot circuit sends one short pulse once it’s input turns on. It lets you “convert lever into button”.


Since flip flops are triggered by rising edge, you need these NOT gates at output. That’s also why you need the “zero filling”. When Ts are resetted, they turn zero and all outputs (after NOTs) turn to ONE, giving you the highest possible number. If you send one clock pulse to the input (using the repeater here), counter will overflow and turn to zero.

You can also build linear counters and watchdogs with these circuits. They were strongly improved in 2.2.