• Panels.

    Pierre-Loup M.8 hours ago 0 comments

    All panels of the synth are made out of acrylic sheet. I believe other materials would be nicer, but it happens I use 4, 6mm cast acrylic, and 2mm extruded acrylic sheets for work, thus having plenty at hand.
    And as I'm lucky enough to also have a laser cutter, it became an obvious choice to use acrylic, that I can both cut and engrave in one go.

    The front panel, despite its simple appearance, took time to design. It had to be decided all the function wanted, were to place them, take attention to the room around switches and potentiometers (for moving them AND regarding their own size).
    Then space them evenly, and check... to move them once again, because something was missing... A game of try and error. :)
    I also used a scrap piece of acrylic to place buttons on it to have a real idea of how it would be, and check distances.

    There is some dust here...

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  • Starting to build a synth !

    Pierre-Loup M.a day ago 1 comment

    The most obvious part for a synth with a keyboard is... a keyboard. Or a keybed, since it's the name the key assembly is called (thank to Tim Trzepacz for mentioning it on his inspiring NanoEgg project ! Funny how having the right word can save so much time when looking for something around Internet !).

    The one that was used comes from an electric all-pastic organ made by Bontempi somewhere around the mid 80's. I found it at a secondhand market, not working, for almost nothing.

    The construction is quite basic, with a plastic rack with mounting holes underneath (one less thing to think about !) each key being mounted on a pole and held by a circular spring. This rack has brackets holding a pcb the size of he keybed, on which were something looking like a resistor array. I wondered for a time if i was going to try and understand how it worked, but eventually just kept the PCB to route my own wiring.

    Each key has a smooth spring attached on it, which is soldered to the pcb. These springs come to touch a metal rod when the key is pressed. (note : the keybed was one third grey with these C-shape contacts, and two thirds white with a unique rod going all the length. The synth uses the white keys with the rod.)

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  • First record !

    Pierre-Loup M.03/23/2020 at 02:15 0 comments

    First project using Teensymoog !

    Everything made with the synth, except the drums.

    popcorn on soundcloud