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Flags-Register

DutchMaker·TTL-computer·Circuits/KiCad/Flags-Register/Flags-Register.kicad_pcb

Flags-Register PCB layout, top view — open source board by DutchMaker
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About the Flags-Register PCB

Flags-Register is an open source PCB design by DutchMaker, published on GitHub. It is a 2-layer board measuring 76.2 × 55.9 mm, with 16 components from 10 distinct parts.

Other key parts include the 74x08, 74x32, 74x04 and 74x74. By type, the board carries 7 ICs, 3 connectors, 3 diodes and 3 resistors.

From the project

Building a computer from scratch using 74xx logic chips

- Add ./Libraries/74xx-Computer-Symbols.lib as global Symbol library to KiCad (Eeschema) - Add ./Libraries as global Footprint library to KiCad (Pcbnew) - PCBs are initially autorouted using ./Libraries/freeRouting.jar and traces are enhanced manually

There are a number of deviations and errors that were found in schematic/PCB designs after PCB production. They are listed here if they were not fixed in the schematic/PCB design files.

Main components on the Flags-Register

74x0874x3274x0474x74

Flags-Register bill of materials (BOM)

16 components, 10 distinct parts.

QtyPartRefs
2
74x08
U1, U2
2
74x32
U3, U4
1
74x04
U5
2
74x74
U6, U7
1
Conn_01x18_Male
J1
2
Conn_01x02_Male
J2, J3
1
Z
D1
1
C
D2
1
CMP
D3
3
470
R1, R2, R3

Flags-Register design files

The KiCad project lives in the DutchMaker/TTL-computer repository on GitHub; these links point at the commit this page was built from.

Flags-Register: common questions

How big is the Flags-Register PCB?

The Flags-Register measures 76.2 × 55.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Flags-Register?

16 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Flags-Register design files?

From the DutchMaker/TTL-computer repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Flags-Register design in my own project?

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

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