Build One Yourself! Pyr0-Piezo Z-Probe Business Card DIY Module github.com / pyr0ball Business Card Sized Pyr0-Piezo Circuit using TH Components. Pyr0-Piezo Z-Probe Standalone Module github.com / pyr0ball Standalone Pyr0-Piezo Circuit for using external arduino. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)