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2 layers85 × 85 mmDisplay board, the printed circuit board in 3D

I'm currently testing the first set of PCBs. There will be updates as I find issues!

Size
85 × 85 mm
Copper layers
2
Thickness
1.6 mm
Parts
23
Nets
36
Pads
144
Tracks, vias
463, 89
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
13 Aug 2025
Updated
13 Aug 2025

Overview

Display board is an open-source printed circuit board by atomic14, from the atomic14/cube-display repository on GitHub. It is a 2-layer board of 85 × 85 mm with 23 parts on 36 nets, routed with 463 tracks and 89 vias.

It is built around the BM04B-SRSS-TB(LF)(SN). Its parts include 5 ICs, 5 diodes, 3 resistors and 2 capacitors. It belongs with the lEDs and displays boards of this library.

Main components

1

README

README.md

Cube Display

This is a work in progress project.

I'm currently testing the first set of PCBs. There will be updates as I find issues!

You can see some of the testing so far on my YouTube channel: atomic14.

Here's the gyro and accelerometer working

The demo above is using the code from here.

Files

  • display-board: 14 segment display board
  • main-board: main board for the display-board
  • main-board-tft: WIP - not complete.

Parts

23
QtyValueFootprintReferences
4KingBright_PSA08-11Display_Other:DIP-18_600_ELLU1, U2, U3, U4
4LED_RCGBDisplay_Other:KAA-3528RGBS-11D1, D2, D3, D4
4MountingHoleMountingHole:MountingHole_2.2mm_M2H1, H2, H3, H4
322kResistor_SMD:R_0603_1608MetricR1, R2, R3
3SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mmJP1, JP2, JP3
1100nFCapacitor_SMD:C_0603_1608MetricC1
147uFCapacitor_SMD:C_0603_1608MetricC2
1BM04B-SRSS-TB(LF)(SN)easyeda2kicad:CONN-SMD_BM04B-SRSS-TBQWIIC1
1DDiode_SMD:D_SOD-323D5
1HT16K33-28pinPackage_SO:SOIC-28W_7.5x18.7mm_P1.27mmU5

Questions

How big is the Display board PCB?

It measures 85 × 85 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Display board use?

23 parts, built around the BM04B-SRSS-TB(LF)(SN). The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Display board KiCad files?

From the atomic14/cube-display repository on GitHub, at the commit this page was made from: the board is display-board/display-board.kicad_pcb and its schematic display-board/display-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Display board design in my own project?

Its repository states no licence, so its author keeps all rights: ask atomic14 before reusing the design.

More from atomic14/cube-display

2
  • 2 layers85 × 85 mmCube display, the printed circuit board in 3D

    Cube display

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    I'm currently testing the first set of PCBs. There will be updates as I find issues!

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  • 2 layers34 × 34 mmMain board tft, the printed circuit board in 3D

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    atomic14/cube-display

    I'm currently testing the first set of PCBs. There will be updates as I find issues!

    48 parts2

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