This schematic uses block observers. Observe blocks are present in Minecraft only since version 1.11. This schematic will not work on Minecraft 1.10.
No idea for the pocket version. But it's probably the same problem.
Full Automatic Wheat Farm #4 : Earthquake on March 27th, 2018 10:57 AM EST
The operation of the upper double piston depends on the geographical orientation of this door. I corrected this flaw in the new version: http://www.minecraft-schematics.com/schematic/9321/
But I leave this schematic as a model of double piston with observer.
Door 4x5 v1.2 on May 19th, 2017 08:47 PM EST