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2 layers90.7 × 127 mmWio gopher, the printed circuit board in 3D

Wio Terminal の背面 40pin ヘッダに挿す、Gopherくんデザインの基板です。 Gopher の目に WS2812B (フルカラー LED) を 2 個載せていて、TinyGo で光らせます。

Size
90.7 × 127 mm
Copper layers
2
Thickness
1.6 mm
Parts
6
Nets
35
Pads
50
Tracks, vias
55, 7
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
11 Oct 2026
Updated
11 Oct 2026

Overview

Wio gopher is an open-source printed circuit board by sat0ken, from the sat0ken/wio-gopher repository on GitHub, published under the MIT licence. It is a 2-layer board of 90.7 × 127 mm with 6 parts on 35 nets, routed with 55 tracks and 7 vias.

It is built around the WS2812B. Its parts include 2 diodes and 1 connector.

Main components

1

README

README.md

wio-gopher

Wio Terminal の背面 40pin ヘッダに挿す、Gopherくんデザインの基板です。 Gopher の目に WS2812B (フルカラー LED) を 2 個載せていて、TinyGo で光らせます。

wio-gopher

ファイル構成

パス内容
wio-gopher.kicad_pro / .kicad_sch / .kicad_pcbKiCad プロジェクト
lib/, lib.pretty/Wio Terminal 40pin ヘッダのシンボル / フットプリント
wio-gopher/, wio-gopher.zipガーバー・ドリルデータ
firmware/TinyGo のファームウェア

回路

Wio Terminal 40pin接続先
1 (3V3)D1, D2 VDD
7 (PB14 / BCM4)D1 DIN
GNDD1, D2 VSS

D1 の DOUT は D2 の DIN につながっています。

ファームウェア

パチンコ台風に、次の流れで光ります。

通常 (虹色) → リーチ (赤青の交互点滅が加速) → 抽選 → 大当たり (ストロボ連発) / ハズレ (赤がフェードアウト)

必要なもの

書き込み

Wio Terminal を USB で PC につないで、次を実行します。

bash
cd firmware
tinygo flash -target=wioterminal .

注意

  • 40pin ヘッダの 3V3 は、OUTPUT_CTR_3V3 (PC15) を Low にしないと出力されません。TinyGo は起動時にこれを設定しないので、ファームウェアの中で有効にしています。
  • WS2812B の電源電圧の仕様は 3.5V 以上なので、3.3V での給電は仕様外です。表示が乱れる場合は firmware/main.go の brightness を下げてください。

ライセンス

MIT

Parts

6
QtyValueFootprintReferences
2WS2812BLED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD1, D2
1LOGOgopher:gopher2G***
1WioTerminal_GPIO_2x20lib:WioTerminal_Carrier_PinHeader_2x20J1

The 4 most common of 6 parts.

Questions

How big is the Wio gopher PCB?

It measures 90.7 × 127 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Wio gopher use?

6 parts, built around the WS2812B. 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 Wio gopher KiCad files?

From the sat0ken/wio-gopher repository on GitHub, at the commit this page was made from: the board is wio-gopher.kicad_pcb and its schematic wio-gopher.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Wio gopher design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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