This is my GBC circuit, features a lift system, reservoir ball and wheel.
It’s a simple GBC based on 2 M motor to drive the modules. The circuit is quite reliable and can support a debit of 1ball/s or 30balls/30s (bulk).
Brickshelf gallery : http://www.brickshelf.com/cgi-bin/gallery.cgi?f=331827
Designed in 2008