LFO modulated simple VCF

this is a rough draft of a circuit i’ve been working on based of the Simple VCF circuit floating out there. a big…

simple LFO circuits…

i was reading over this thread on diystompboxes.com about building an analog LFO circuit for some wild noise idea i’ve got brewing in…

TDA2040 Instrument Amplifier

the need for small and portable amplifiers has arisen mainly by a desire to come up with some sort of all-purpose busking amplifier.…

SCHEMATIC: TL082 9V Active EQ…

an experimental EQ circuit based of the TL082 datasheet. i modified it to use a 9V battery, but could probably still use some…

SPICE: ngSpice plot test…

nothing too special here. i’ve been practicing my SPICE skills and attempting to work with a single-supply active EQ circuit based on the…

Mellotronium revised…

here’s an update on the new additions/approach to the Mellotronium. i’m attempting to redo the SD card routines once i get the functionality…