HardLabs

Mother ring

sastles-com·FPC-isolation-sphere·kiban/mother-ring/mother-ring.kicad_pcb

Mother ring PCB layout, top view — open source ESP32 board by sastles-com

About the Mother ring PCB

Mother ring is an open source ESP32 PCB design by sastles-com, published on GitHub. It is a 2-layer board measuring 88 × 88 mm, with 24 components from 17 distinct parts.

Its main chip is the ESP32-01, from the ESP32 family. By type, the board carries 15 connectors, 5 resistors, 3 capacitors and 1 inductor.

It belongs with the displays & leds designs in this gallery.

From the project

直径 100 mm の球体 LED ディスプレイ。約 800 個の WS2812-2020 を ゴールドバーグ多面体 T=81 の球面に配置した "デジタル地球儀" 風ピクセルディスプレイ。

直径 100 mm の球体 LED ディスプレイ。約 800 個の WS2812-2020 を ゴールドバーグ多面体 T=81 の球面に配置した "デジタル地球儀" 風ピクセルディスプレイ。

A 100 mm spherical LED display with ~800 WS2812-2020 pixels arranged on a Goldberg polyhedron (T=81) shell.

前作はスパイラル配線＋接着剤固定で LED 1 個の故障が全損につながる設計だった。 V2 では カセット交換式・接着剤ゼロ に全面刷新する。

- [x] Goldberg T=81 メッシュ生成（goldberg.py） - [x] カセット分割・可視化（Blender Python） - [x] ヘキサゴン錐 + 円柱アパーチャの Boolean 生成（aperturebooleandemo.py） - [ ] カセット外殻 STL 完成 - [ ] FPC（骨組み基板）KiCad 設計 - [ ] 極専用 Rigid PCB × 2 - [ ] 赤道マザーリング基板 - [ ] ファームウェア（ESP32）

Mother ring bill of materials (BOM)

24 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LED01
J1
1
LED02
J2
1
LED03
J3
1
LED04
J4
1
LED05
J5
1
POWER-01
J6
1
POWER-02
J7
2
ESP32-01
J8, J9
1
CHARGE
J10
2
POWER
J11, J15
1
5V
J12
1
3V3
J13
1
BATTERY
J14
1
FerriteBead
FB1
1
10UF
10uF
C10
2
0.1UF
0.1uF
C11, C12
5
33Ω
R1, R2, R3, R4, R5

Mother ring design files

The KiCad project lives in the sastles-com/FPC-isolation-sphere repository on GitHub; these links point at the commit this page was built from.

Mother ring: common questions

What microcontroller does the Mother ring use?

The Mother ring is built around the ESP32-01, from the ESP32 family.

How big is the Mother ring PCB?

The Mother ring measures 88 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mother ring?

24 components, from 17 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 Mother ring design files?

From the sastles-com/FPC-isolation-sphere 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 Mother ring design in my own project?

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

Can I test firmware for the Mother ring without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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