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Envelope generator

gridbugs·modular2·envelope-generator/envelope-generator.kicad_pcb

Envelope generator PCB layout, top view — open source board by gridbugs

About the Envelope generator PCB

Envelope generator is an open source PCB design by gridbugs, published on GitHub under the MIT license. It is a 2-layer board measuring 60 × 80.2 mm, with 30 components from 19 distinct parts.

Other key parts include the TL072. By type, the board carries 9 resistors, 6 connectors, 6 diodes, 4 capacitors, 2 switches and 1 IC.

From the project

A modular synthesizer, where modules are designed as close to bare PCBs as is practical/safe. This is the spiritual successor to the briefcase modular synthesizer.

Main components on the Envelope generator

TL072

Envelope generator bill of materials (BOM)

30 components, 19 distinct parts.

QtyPartRefs
1
TL072
U1
2
Power
J1, J2
2
Pot
J3, J4
1
Gate Input
J5
1
Output
J7
1
250K
RV1
1
1M
RV2
1
Gate Button
SW1
1
AR/D Switch
SW2
3
D
D1, D2, D3
2
~
D4, D6
1
LED
D5
1
47nF
C1
1
10uF
C2
2
100nF
C3, C4
4
100K
R1, R3, R4, R5
2
47K
R2, R6
1
5.1K
R7
2
1K
R8, R9

Envelope generator design files

The KiCad project lives in the gridbugs/modular2 repository on GitHub; these links point at the commit this page was built from.

Envelope generator: common questions

How big is the Envelope generator PCB?

The Envelope generator measures 60 × 80.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Envelope generator?

30 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Envelope generator design files?

From the gridbugs/modular2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Envelope generator design in my own project?

Yes, under the terms of its MIT license, which gridbugs chose for the repository.

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