Before
About the Before PCB
Before is an open source PCB design by otitbridge, published on GitHub under the Custom license license. It is a 4-layer board measuring 100 × 100 mm, with 40 components from 11 distinct parts.
By type, the board carries 33 resistors, 3 connectors, 2 jumpers and 2 capacitors.
From the project
Experimental GBA cartridge dumper hardware for WeAct ESP32S3-A N16R2. KiCad design; hardware validation and firmware implementation in progress.
状態：4層配線・AD6短縮・シルク最終整理・最終DRCまで完了。WeAct版ガーバー・ドリル・CPL出力と照合まで完了。JLCPCBへ5枚発注済み（2026-09-28）。実機未検証。
正本ブランチは main（WeAct版）。識別子 WEACTESP32S3AN16R2GBAV120260928。WeAct本体の部品取り外し・パターンカットなし。N16R8やESP32S3-Bには適用しない。
- 最終シルク確認PNG / 出力前レビュー - 回路図SVG / PNG / KiCad回路図 - 配線概要PNG / GND面 / 配線記録 / 配線長比較 - 配線前配置図PNG / SVG / PCB - 全体BOM / 調達表 / PCBA BOM - ピンマップ / ファームウェア定義 - 設計仕様 / 移行レビュー - ソケット・機械条件 / 配置条件 / 製造ルール - 未完了事項 / 立上げ手順
Before bill of materials (BOM)
40 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | FH2.54-40U1GF8.5-0.5 WEACT_LEFT Ronmee Industrial Corporation | PinSocket_1x22_P2.54mm_D1.02mm | J1 |
| 1 | FH2.54-40U1GF8.5-0.5 WEACT_RIGHT Ronmee Industrial Corporation | PinSocket_1x22_P2.54mm_D1.02mm | J2 |
| 1 | N/A - manufacturer part number not identified GBA_32_LOGICAL_PINS Not specified by user | GameBoy_Cartridge_AGB_1x32_P1.50mm_Socket_Horizontal | J3 |
| 1 | PH-1X2SG WR ENABLE / DEFAULT OPEN Chang Enn | PinHeader_1x02_P2.54mm_D1.02mm | JP1 |
| 1 | PH-1X2SG POWER LINK / DEFAULT CLOSED Chang Enn | PinHeader_1x02_P2.54mm_D1.02mm | JP2 |
| 1 | CC0805KRX7R9BB104 100nF YAGEO | C_0805_2012Metric | C1 |
| 1 | CL21A106KAYNNNE 10uF Samsung Electro-Mechanics | C_0805_2012Metric | C2 |
| 24 | 0805W8F3300T5E 330 UNI-ROYAL | R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8 +16 |
| 4 | 0805W8F1000T5E 100 UNI-ROYAL | R_0805_2012Metric | R25, R26, R27, R28 |
| 4 | 0805W8F1002T5E 10k UNI-ROYAL | R_0805_2012Metric | R29, R30, R31, R32 |
| 1 | 0805W8F1002T5E 10k / PHI pulldown UNI-ROYAL | R_0805_2012Metric | R33 |
Before design files
The KiCad project lives in the otitbridge/gba-dumper-esp32-s3 repository on GitHub; these links point at the commit this page was built from.
Before: common questions
How big is the Before PCB?
The Before measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Before?
40 components, from 11 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 Before design files?
From the otitbridge/gba-dumper-esp32-s3 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Before design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
