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"garden" analog prototyping board (version 0)

i have been studied exotic computational mediums since college, and one paradigm that mixes very naturally with my interest in synthesizers is analog computing.

many early analog computers utilized an interface essentially identical to modular synthesizers. the principle of analog computing is in fact not limited to electronics; in 1949 Bill Philips developed a water-based computer to simulate an economy. however, the fundamental principles are the same -- water is often used as an analogy to explain the behavior of electrical circuits.

i was greatly inspired by anabrid's the analog thing. i appreciate that they have released their schematics into the public domain, which has made a great reference for my own circuit design and chip choice. the board features 6 3.5mm TS mono audio jacks to serve as analog I/O and to provide power (±9V recommended) to the ICs on board. the ICs are:

TL084: quad op-amp (datasheet)
TLV2462: dual op-amp (datasheet)
CD4093B: schmitt trigger nand gate (datasheet)
AD633: analog multiplier (datasheet)

the board has a selection of different resistor and capacitor values. the selection is a combination of my guessing and what i had available. i provided multiples of commonly used resistor/capacitor denominations for designs that may require multiple of a specific value. you may notic that the arrangement of capacitors is quite frenetic, this is the order in which they came in my box collection. the arrangement starts with μ, the largest unit (E-6), followed by p, the smallest unit (E-12) and then n which is in between the two (E-9). 0.1μF is equivalent to 100nF. the board also features 2 1N4001 diodes, 4 10kΩ potentiometers, a momentary button, and 2 LEDs.

i created a reference table mostly for myself of the pinouts of the ICs and the resistor/capacitor values.

out 1	TL084CN	out 4	1Ω	0.1µF
in- 1		in- 4	1Ω	0.1µF
in+ 1		in+ 4	3.9Ω	0.15µF
vcc+		vcc-	8.2Ω	0.22µF
in+ 2		in+ 3	10Ω	0.33µF
in- 2		in- 3	10Ω	0.47µF
out 2		out 3	39Ω	0.68µF
			82Ω	1µF
out 1	TLV2462	vcc+	100Ω	1µF
in- 1		out 2	100Ω	2.2µF
in+ 1		in- 2	390Ω	4.7µF
gnd/vcc-		in+ 2	820Ω	10µF
			1kΩ	10µF
a 1	CD4093B	vcc+	1kΩ
b 1		b 4	1.5kΩ	10pF
out 1		a 4	3.9kΩ	10pF
out 2		out 4	5.6kΩ	47pF
a 2		out 3	8.2kΩ	68pF
b 2		b 3	10kΩ	100pF
gnd		a 3	10kΩ	100pF
			10kΩ	200pF
x-	AD633	vcc+	10kΩ	1nF
x+		out	15kΩ	1nF
y-		sum	39kΩ
y+		vcc-	56kΩ	4.7nF
			82kΩ	10nF
			100kΩ	10nF
			100kΩ
			100kΩ	10nF
			390kΩ	10nF
			820kΩ	47nF
+	1N4001	-	1MΩ	100nF
+	1N4001	-	1MΩ	100nF

choosing to connect each terminal of the components to rows of (typically 3) pins provides space for the heads of the wires to be plugged in.