HardLabs

CHILD MAIN

AquaBeacon·hardware·pcb/CHILD_MAIN/CHILD_MAIN.kicad_pcb

CHILD MAIN PCB layout, top view — open source RP2040/RP2350 board by AquaBeacon

About the CHILD MAIN PCB

CHILD MAIN is an open source RP2040/RP2350 PCB design by AquaBeacon, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 104 × 88 mm, with 22 components from 15 distinct parts.

Its main chip is the Pico 2 W, from the RP2040/RP2350 family.

From the project

回路図・PCB・製造ツール

LTspiceで検証済みの4回路(LTspice/ sim/notes.md 参照)をKiCadの回路図+PCBに実装したもの。 すべて ERC合格・意図ネットリスト照合合格・DRC 0違反/未配線0。

各フォルダの内容: .kicadsch / .kicadpcb / .kicadpro、schematic.pdf、 render.png(3Dレンダ)、gerbers/(ガーバー+ドリル)、erc.rpt / drc.rpt、.net、 bom.csv(部品表: Value/Footprintでグループ化)。 datasheets/` に発注前確認で参照した一次資料(2SK4017東芝純正データシート)を同梱。

発注・組立時は ORDERING.md(4基板統合発注リスト+代替品情報)と BRINGUP.md(組立順序・通電手順・シミュ由来の期待測定値)を参照。 全体システム(Pico/SPRESENSE/テザー)への組み込みは SYSTEMINTEGRATION.md** (設計書とのギャップ分析・J2↔GPIO対応表)を参照。

CHILD MAIN bill of materials (BOM)

22 components, 15 distinct parts — part numbers from the project's BOM.

QtyPartRefs
6
100n
C_D1, C_D2, C_SD1, C_V3A, C_V3b, C_V5b
3
10u
C_SD2, C_V3, C_V5
1
BNO085_4754
J_BNO1
1
NHD_C0216CiZ
J_LCD1
1
LEAK
J_LEAK1
1
MS5837
J_PRS1
1
FROM_CPWR
J_PWR1
1
DS3231_ZS042
J_RTC1
1
TO_CRX
J_RX1
1
CELSIUS_TSYS01
J_TEMP1
1
TETHER
J_TETH1
1
Pico 2 W
PICO1
1
120_DNP
R_TRMD1
1
microSD
SD1
1
W_RS485_DATA
U_485D1

CHILD MAIN design files

The KiCad project lives in the AquaBeacon/hardware repository on GitHub; these links point at the commit this page was built from.

CHILD MAIN: common questions

What microcontroller does the CHILD MAIN use?

The CHILD MAIN is built around the Pico 2 W, from the RP2040/RP2350 family.

How big is the CHILD MAIN PCB?

The CHILD MAIN measures 104 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CHILD MAIN?

22 components, from 15 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 CHILD MAIN design files?

From the AquaBeacon/hardware 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 CHILD MAIN design in my own project?

Yes, under the terms of its Apache-2.0 license, which AquaBeacon chose for the repository.

Can I test firmware for the CHILD MAIN without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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