Simplest double piston extender I made ever, requires: 3x Sticky pistons, 3x any block 1x observer and 1x button (any), and the build is shown above : r/redstone
Fenno on X: "Smallest 1-wide vertical double piston extender. https://t.co/TT6TpVlseP" / X
Horizontal Double Piston Extender (1-Wide) 1.12 - Screenshots - Show Your Creation - Minecraft Forum - Minecraft Forum
minecraft java edition minecraft redstone - Double stack of sticky piston, top wont pull? - Arqade