Glider stopper

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Glider stopper
x = 67, y = 57, rule = B3/S23 bo$2bo$3o13$65bo$64bo$64b3o12$51bo$51bobo$39b2o10b2o$39b2o8$39b2o$38bo 2bo$39b2o$46b2o$46b2o$63b2o$28b2o33bo$27bobo31bobo$27bo33b2o$26b2o4$ 37b2o$36bobo$36bo$35b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 12 X 12 Y 15 GPS 30 LOOP 384 PAUSE 2 WIDTH 480 HEIGHT 480 THUMBSIZE 2 ]]
Pattern type Conduit
Conduit type Stable
Input glider
Output beehive
Number of cells 35
Bounding box 39×26
Discovered by Paul Callahan
Year of discovery 1996

A glider stopper is a Spartan logic circuit discovered by Paul Callahan in 1996. It allows a glider signal to pass through the circuit, leaving behind a beehive that can cleanly absorb a single glider from a perpendicular glider stream. Two optional glider outputs are also shown. The circuit can't be re-used until the beehive "bit" is cleared by the passage of at least one perpendicular input. The mechanism is related to the original Herschel receiver: replacing the east eater 1 with a pair of blocks produces an R-pentomino that is compatible with a following RF28B or RF48H converter.

A similar mechanism discovered more recently is shown in the beehive stopper article.

External links