Pinball
Williams/Bally WPC
PinWiki: http://pinwiki.com/wiki/index.php?title=Williams_WPC
FlipperWinkel pinball repair: http://techniek.flipperwinkel.nl/wpc/ (fixed version at steffes stuff)
Pinball Rehab: http://pinballrehab.com/
Interesting DMD hacks
https://pinside.com/pinball/forum/topic/de-jurassic-park-with-lcd-dmd-replacement#post-1102230
http://pin2dmd.com/ (http://vpuniverse.com/forums/topic/2219-pin2dmd-color-pindmd-compatible-interface-with-led-rgb-color-dmd/) (https://github.com/lucky01/PIN2DMD)
https://pinside.com/pinball/forum/topic/diy-rgb-led-dmd-4-wpc (https://github.com/hawkulous)
http://adampreble.net/blog/2009/12/arduino-pinball-dmd/ (https://gist.github.com/preble/250458)
http://poormanspinball.blogspot.se/
Interesting Virtual Pinball links
It seems like VPX is currently on top: https://vpinball.com/
It now also supports BAM via Kinect: https://www.youtube.com/watch?v=g-EpTp_3wKo&feature=youtu.be&app=desktop https://www.ravarcade.pl/
And has some legendary tables: https://vpinball.com/bb_project/gilligans-island-3d-vpx-wip/
Pinscape controller: https://os.mbed.com/users/mjr/code/Pinscape_Controller_V2/ or http://mjrnet.org/pinscape/
Pinscape controller build guide: http://mjrnet.org/pinscape/BuildGuideV2/BuildGuide.php?custom=EN.SS.CY.NY.PO.PP.PA.PV.PcY.BY.OY.TvW&expver=R3.201602xx&sid=toc