HardLabs

Low pass filter

gridbugs·modular2·low-pass-filter/low-pass-filter.kicad_pcb

Low pass filter PCB layout, top view — open source board by gridbugs

About the Low pass filter PCB

Low pass filter is an open source PCB design by gridbugs, published on GitHub under the MIT license. It is a 2-layer board measuring 70.2 × 99.5 mm, with 43 components from 21 distinct parts.

Other key parts include the LM13700 and TL074. By type, the board carries 17 resistors, 9 connectors, 8 capacitors, 2 ICs, 2 transistors and 2 diodes.

From the project

- The "Cutoff" potentiometer is reversed.

Main components on the Low pass filter

LM13700TL074

Low pass filter bill of materials (BOM)

43 components, 21 distinct parts.

QtyPartRefs
1
LM13700
U1
1
TL074
U2
2
PNP (e.g. BC558)
Q1, Q2
3
Power
J1, J2, J8
3
Pot
J3, J6, J9
1
CV
J4
1
Output
J5
1
Input
J7
2
100K
RV1, RV2
1
5K
RV3
2
LED
D1, D2
4
100nf
C1, C2, C7, C8
2
1nf
C3, C6
1
470nf
C4
1
4.7nf
C5
7
10k
R1, R2, R6, R7, R8, R10, R12
4
220R
R3, R5, R9, R11
2
1k8
R4, R15
1
4k7
R13
1
470k
R14
Show 1 more
QtyPartRefs
2
100k
R16, R17

Low pass filter design files

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

Low pass filter: common questions

How big is the Low pass filter PCB?

The Low pass filter measures 70.2 × 99.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Low pass filter?

43 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Low pass filter 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 Low pass filter design in my own project?

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

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