HardLabs

ALU

QuinnFreedman·modular·modules/Logic/PCBs/logic_pcb/logic_pcb.kicad_pcb

ALU PCB layout, top view — open source board by QuinnFreedman

About the ALU PCB

ALU is an open source PCB design by QuinnFreedman, published on GitHub. It is a 2-layer board measuring 19 × 100 mm, with 58 components from 14 distinct parts.

Other key parts include the CD74HCT132E, LM324, TL072 and LM4040C50FTA. By type, the board carries 32 resistors, 15 capacitors, 6 ICs and 3 diodes.

It belongs with the audio designs in this gallery.

From the project

A collection of free & open source DIY synthesizer module designs for Eurorack

ALU, from the project README
From the project README

Main components on the ALU

CD74HCT132ELM324TL072LM4040C50FTA

ALU bill of materials (BOM)

58 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
CD74HCT132E
U1, U2
2
LM324
U3, U4
1
TL072
U5
1
LM4040C50FTA
U6
2
Board
B1, B2
3
1N4148
D1, D2, D3
4
330pF
C1, C2, C3, C4
2
10uF
C5, C6
9
100nF
C8, C9, C10, C11, C12, C13, C14, C15 +1
18
10kΩ
R1, R2, R6, R7, R9, R10, R11, R12 +10
4
5.1kΩ
R3, R4, R5, R8
6
1kΩ
R14, R17, R18, R27, R28, R29
3
100kΩ
R16, R31, R32
1
3.3kΩ
R30

ALU design files

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

ALU: common questions

How big is the ALU PCB?

The ALU measures 19 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ALU?

58 components, from 14 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the ALU design files?

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

Can I use the ALU design in my own project?

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

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