My simple design is here: http://www.thingiverse.com/thing:2018609 Short summary: A bracket replaces the IR probe circuit board. One additional wire needs to be run in the wiring harness ( for the servo control line ). Firmware changes to support the BLTOUCH are included in Marlin RC7 and RC8 source code ( editing the source file to un-comment the appropriate lines and then recompiling is required). IF you use RC7, there is a bug that requires a work-around (might also be in RC8...). The work-around involves making sure that the bed lowers fast enough, during Auto Bed Leveling, to avoid tripping the fault detection firmware in the BLTOUCH. I can find the thread in the Marlin discussion if someone wants more details.