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notes to self

a document of a plodding mind

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Author: abram

Posted on 2014-05-262026-03-16
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diy arduino dev board

simple dev board made from some cheap 400 contact breadboards on a piece of acrylic.

Posted on 2014-05-232026-03-16
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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 thanks to the original author for that.Continue readingLFO modulated simple VCF

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Dissolved penny

abram Posted on 2014-05-202014-05-23

this penny has almost completely dissolved in a three month period in a solution of vinegar and salt. last time I opened the jar, it had pressurized most likely dueContinue readingDissolved penny

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keeping the internet neutral…

abram Posted on 2014-05-14

Help stop the FCC from allowing telecom giants to divide up the internet.

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new binary album out on already dead

abram Posted on 2014-04-30

anticipation of something else by The Binary Marketing Show Featuring ye olde Mellotronium and a bunch of other stuff.

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Running Up That Hill: Kate Bush Covers for Reproductive Rights

abram Posted on 2014-02-15

Running Up That Hill: Kate Bush Covers for Reproductive Rights by Various Artists

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DOD FX69B Grunge insanity mod…

abram Posted on 2013-09-082014-03-19

this “insanity” mod makes this pedal sound much more insane that the original version. i dropped in a couple of germanium clipping diodes between gain stages for a warmer, beefierContinue readingDOD FX69B Grunge insanity mod…

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mellotronium 2.0: rebuild

abram Posted on 2013-08-12

after our move to Oregon two months ago, i’m finally getting back to a spot where i can do more building and experimentation. that being said, my arduino-based sampler/synth isContinue readingmellotronium 2.0: rebuild

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inside an EL84…

abram Posted on 2013-05-26

a close-up picture of the guts of a JJ EL84 with all it’s grids exposed. such a seemingly odd and fascinating device.

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about

Abram Morphew is an electrical engineer, bedroom musician, composer, naturalist, and amateur scientist. I play music in the the binary marketing show. This blog is a catalog of stuff that I make or bits of information that I think could prove useful later on when memory fails me.

 

I currently hold an Extra Class Amateur Radio Operator license and transmit on the air as K2NXF.

Tags

40m amp amplifier Arduino atmega328 atmel audio bash bjt breadboard circuit code cw delay digital effect effects electrical electronics homebrew lfo linux LM386 mellotronium music no. 5 opamp oscillator pcb pedal photos php pt2399 pwm radio rf schematic stereo stompbox synth tape TDA2040 tl072 TL082 tube

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