Myren Eario | Fully automatic flying bedrock breaker (1.9-1.12) @myreneario7216 | Uploaded 5 years ago | Updated 4 hours ago
wd: http://www.mediafire.com/file/qruvsxy1yyj4c7e/fully+auto+bedrock+breaker.rar

Unlike the previous flying bedrock breakers, this one does not delete/drop any pistons, and thus counts as "fully automatic".
The reason this took so long to build is that I for a long time bought into the observer hype. After realizing that observers belong in the ninth circle of hell and not on flying machines, building this somehow became easier. So you can actually build this in 1.9.
The main disadvantage of this particular flying machine is that it only breaks every 4-th bedrock block. If you want to break an entire bedrock line you can use 4 of these contraptions behind each other.

The challenge now is of course to reduce the step size of this machine to 1, and then make it 3-way, so that it can remove the entire y=0 bedrock.
After having done that we can proceed to make it 5-way and finally get quarries that can deal with obsidian.

In 1.13+ it will not be possible to make flying bedrock breakers that don´t break any pistons anymore, because you can´t instantly finish the retraction of a piston anymore without destroying it. So if you want to make a quarry in 1.13 that deals with obsidian you´ll probably have to go back to mobile wither cages, which is even more difficult thant the stuff I´m trying to do here.

Also, cool mann was also working on a flying machine like this in the past. Seeing his attempts was a bit helpful. In any case, if you like flying machines like this you´ll also like cool manns channel. youtube.com/channel/UCfJpBqZiHxPGcLpFpmbGoKg