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HI all, just started few new wiki topics, as told in the title. http://wiki.midibox.org/doku.php?id=electronics_basics (translation from some of my blog articles and some addings, corrected by Sauraen & Latigid) http://wiki.midibox.org/doku.php?id=kicad_an_open_source_alternative_to_eagle_for_pcb_design http://wiki.midibox.org/doku.php?id=freecad_an_open_source_software_for_technical_drawing Last Second edit : Updated link Another new topic in wiki : http://wiki.midibox.org/doku.php?id=digital_electronics Feel free to have a look and give feedback! If you can also add coherent content, if you can/want, would be great.

About the piezo it also depends on the mechanical setup . Some good pictures about how it's handled in "real" drum triggering ; http://edrums.info/acoustic_1-2/ I don't know about your noise issue , but i adviced by the past a model with Feedback loop : http://www.mouser.fr/ProductDetail/CUI-Inc/CEB-20FD64/ Maybe the feedback loop may provide some help ? What about amplifying the piezo out ? http://wiki.midibox.org/doku.php?id=electronics_basics#b-non_inverted_amplifier regards, Jerome

By the way , after exploring the wiki a bit more, it's kind of really the mess and it hurts my eyes. Much informations is there but no one should get into because of readability problems : There are many large blocks of text and too few pics in many section , Is it possible that I redo some layout in several section? I mean without deleting any content , just making it more organized & cool to the eyes? (that's a thing i do well )