HardLabs

QMix

WardBenjamin·QMix

QMix PCB layout, top view — open source board by WardBenjamin

About the QMix PCB

QMix is an open source PCB design by WardBenjamin, published on GitHub. It is a 2-layer board measuring 66 × 39.1 mm, with 67 components from 18 distinct parts.

Other key parts include the TL072, LD1117S50TR_SOT223, LD1117S25TR_SOT223, MCP4451-104 and TL074. By type, the board carries 24 test points, 18 resistors, 9 connectors, 8 capacitors, 7 ICs and 1 diode.

It belongs with the audio designs in this gallery.

From the project

Audio mixer hardware design built in KiCad 5

Main components on the QMix

TL072LD1117S50TR_SOT223LD1117S25TR_SOT223MCP4451-104TL074

QMix bill of materials (BOM)

67 components, 18 distinct parts.

QtyPartRefs
1
TL072
U1
1
LD1117S50TR_SOT223
U2
1
LD1117S25TR_SOT223
U3
2
MCP4451-104
U4, U5
2
TL074
U6, U7
1
Power Input
J1
1
Stereo Input 1
J2
1
Stereo Input 2
J3
1
Stereo Input 3
J4
1
Stereo Input 4
J5
2
Conn_01x05
J6, J9
1
Headphones Output
J7
1
Speaker Output
J8
24
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +16
1
D_TVS
D1
8
1uF
C1, C2, C3, C4, C5, C6, C7, C8
10
10k
R1, R2, R7, R8, R9, R10, R15, R16 +2
8
10M
R3, R4, R5, R6, R11, R12, R13, R14

QMix design files

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

QMix: common questions

How big is the QMix PCB?

The QMix measures 66 × 39.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the QMix?

67 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the QMix design files?

From the WardBenjamin/QMix repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the QMix design in my own project?

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

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