HardLabs

Eurorack-3310-ADSR

DIYSynthMNL·Eurorack-3310-ADSR·kicad/Eurorack-3310-ADSR.kicad_sch

Eurorack-3310-ADSR
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About the Eurorack-3310-ADSR PCB

Eurorack-3310-ADSR is an open source PCB design by DIYSynthMNL, published on GitHub. It is a board, with 69 components from 30 distinct parts.

Other key parts include the TL074 and KA78M05_TO252. By type, the board carries 30 resistors, 14 capacitors, 8 connectors, 4 ICs and 4 diodes.

It belongs with the audio designs in this gallery.

From the project

This is an ADSR based on the AS3310 chip

A Eurorack ADSR envelope generator built around the AS3310 chip from Electric Druid — a precision voltage-controllable ADSR with a 100,000:1 time range, isolated control inputs, and a true exponential RC envelope shape. Each of Attack, Decay, Sustain, and Release has both a front-panel knob and a CV input with attenuator.

- Full voltage-controlled ADSR — A, D, S, R each have a panel pot and a CV input with attenuator - 100,000:1 time range (2 ms to 20 s per datasheet) via the AS3310's exponential time control - Independent gate and trigger — internal differentiator generates a trigger pulse…

Main components on the Eurorack-3310-ADSR

TL074KA78M05_TO252

Eurorack-3310-ADSR bill of materials (BOM)

69 components, 30 distinct parts.

QtyPartRefs
1
~
U1
2
TL074
U2, U3
1
KA78M05_TO252
U4
1
Attack CV In
J1
1
Decay CV In
J2
1
Sustain CV In
J3
1
Release CV In
J4
1
Gate In
J5
1
Env Out
J6
1
EuroPower_JST_3P
J7
1
EURO_PWR_16P
J8
1
20K
RV1
4
100K
RV2, RV4, RV6, RV8
4
10K
RV3, RV5, RV7, RV9
1
BAT42
D1
1
LED
D2
2
~
D3, D4
1
47nF
C1
1
10nF
C2
5
100pF
C3, C4, C5, C6, C7
Show 10 more
QtyPartRefs
1
2.7nF
C8
2
22uF
C9, C14
2
2.2uF
C10, C11
2
100nF
C12, C13
4
470R
R1, R6, R11, R22
1
16K
R2
15
100K
R3, R4, R7, R8, R9, R12, R13, R14 +7
5
10K
R5, R10, R21, R25, R30
3
1K
R17, R26, R27
2
1M
R28, R29

Eurorack-3310-ADSR design files

The KiCad project lives in the DIYSynthMNL/Eurorack-3310-ADSR repository on GitHub; these links point at the commit this page was built from.

Eurorack-3310-ADSR: common questions

How many components are on the Eurorack-3310-ADSR?

69 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Eurorack-3310-ADSR design files?

From the DIYSynthMNL/Eurorack-3310-ADSR repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Eurorack-3310-ADSR design in my own project?

The repository has no license, so all rights stay with DIYSynthMNL. Use it as a reference, and ask the author before reusing the design.

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