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BALD

dennowiggle·Retro-PETER·Hardware/BALD/BALD.kicad_pcb

BALD PCB layout, top view — open source board by dennowiggle
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About the BALD PCB

BALD is an open source PCB design by dennowiggle, published on GitHub under the LGPL-2.1 license. It is a 4-layer board measuring 102.9 × 49.9 mm, with 55 components from 6 distinct parts.

Other key parts include the TLV1117LV33DCYR. By type, the board carries 32 resistors, 16 diodes, 6 capacitors and 1 IC.

It belongs with the retro computing designs in this gallery.

From the project

3.3V Retro computer project => FPGA + RCBUS + CPU boards making a custom system.

1. The 'output' directory contains the BOM, netlist, and PDF schematic.

3. J1 was changed to Adam Tech part number PH2RA-80-UA to reduce insertion force.

BALD, from the project README
From the project README

Main components on the BALD

TLV1117LV33DCYR

BALD bill of materials (BOM)

55 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TLV1117LV33DCYR
Texas Instruments
U4
16
LTST-S270KGKT
LED_LTST-S270KGKT
Lite-On Inc.
D1, D2, D3, D4, D5, D6, D7, D8 +8
2
CL10A475KO8NNNC
4.7uF
Yaego
C1, C9
4
CC0603KRX7R9BB104
100nF
YAGEO
C2, C3, C4, C8
16
RC0603FR-0710KL
10K
Yaego
R1, R2, R3, R4, R5, R6, R7, R8 +8
16
RC0603FR-071KL
1K
Yaego
R9, R10, R11, R12, R13, R14, R15, R16 +8

BALD design files

The KiCad project lives in the dennowiggle/Retro-PETER repository on GitHub; these links point at the commit this page was built from.

BALD: common questions

How big is the BALD PCB?

The BALD measures 102.9 × 49.9 mm, has 4 copper layers and is 1.60484 mm thick.

How many components are on the BALD?

55 components, from 6 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 BALD design files?

From the dennowiggle/Retro-PETER 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 BALD design in my own project?

Yes, under the terms of its LGPL-2.1 license, which dennowiggle chose for the repository.

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