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Memory Circuits

T FLIP-FLOP (TOGGLE)

Toggles its output state with each input pulse. Press once = ON, press again = OFF. Converts any momentary pulse (button) into a toggle switch behavior.

When to Use

Button-operated piston doors, toggle lights, any mechanism that needs on/off switching from a single button.

Materials

  • ▸1 Dropper
  • ▸1 Hopper
  • ▸1 Redstone Comparator
  • ▸1 Redstone Dust
  • ▸1 Item (any)

How to Build

  1. 1Place a dropper facing up.
  2. 2Place a hopper on top of the dropper, pointing down into it.
  3. 3Put one item in the dropper.
  4. 4Run a redstone comparator out of the dropper to read its contents.
  5. 5Power the dropper with your toggle input (button).
  6. 6Each pulse moves the item: dropper → hopper → dropper, toggling the comparator output.

Variants

  • ▸Dropper-hopper T flip-flop (compact, 1-wide tileable)
  • ▸Piston T flip-flop (piston pushes block between two positions)
  • ▸Dual-edge T flip-flop (toggles on both press and release)
  • ▸JK flip-flop (generalized version with separate J and K inputs)
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