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2 layers57 × 47 mmEduSpectro4X 07, the printed circuit board in 3D

ファームウェア・電子回路

Size
57 × 47 mm
Copper layers
2
Thickness
1.6 mm
Parts
17
Nets
33
Pads
66
Tracks, vias
74, 0
Pours
2
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
25 Apr 2026
Updated
29 Apr 2026

Overview

EduSpectro4X 07 is an open-source printed circuit board by EduSpectro, from the EduSpectro/EduSpectro4X repository on GitHub, published under the MIT licence. It is a 2-layer board of 57 × 47 mm with 17 parts on 33 nets, routed with 74 tracks and 0 vias.

It is built around the NJM2732D. Its parts include 4 connectors, 3 capacitors, 2 resistors, 2 ICs and 1 switch. It belongs with the RP2350 boards of this library.

Main components

1

README

README.md

EduSpectro4X

ファームウェア・電子回路 📖 総合ガイド(Webサイト)はこちら

  • 概要: 「RP2350とC12880MAを組み合わせた分光器の心臓部です」

  • 分光性能諸元:

    • 測定波長範囲: 340 nm 〜 850 nm(紫外線〜可視光〜近赤外線)
    • 物理画素数: 288 画素(センサー本来の受光素子数)
    • 論理出力点数: 1149 点(4倍オーバーサンプリング間)
    • 波長分解能 (FWHM): 約 10 nm 〜 15 nm
    • 階調分解能: 16bit相当(12bit ADC × 10回累積処理)
    • 最短露光時間: 20 ms(0.02秒)
    • データ更新間隔: 約 20 ms 〜(露光設定に依存)
  • 特徴: PIOによる高速制御、10回累積計測してによるノイズ軽減、Catmull-Rom補間など。

  • 必要な環境:

    • Arduino IDEのバージョン1.8.19
    • 導入が必要なボードマネージャー(Raspberry Pi Pico/RP2350)
    • ボード:Waveshare RP2350 Zero、
  • ハードウェアについて: EduSpectro基板部品説明

    • 部品リスト:マイコンボード Waveshare RP2350 Zero、分光センサー C12880MA、オペアンプ NJM2732D、0.3mA定電流素子、セラミックコンデンサ 0.1μF(3個)、1kΩ、2kΩ、トグルスイッチ、14ピンICソケット(丸ピン)、ロープロファイルピンヘッダー(オス)、ヘッダーピン(メス)、L型ピンヘッダ(オス)
  • 分光センサー底面と丸ピンICソケットの接触について:

    • 分光センサーと丸ピンICソケットの間に絶縁シートを挟む。 センサーと絶縁シート センサーにつける センサーを取り付ける
  • 分光センサーのシリアル番号と波長校正データについて:

    • ファームウェアでは波長校正は行なっていません。測定・解析アプリケーションEduSpectroLabの"system_config_do_not_delete"フォルダーの"calibration_coefficients.txt"に使っているセンサーのシリアル番号とデータを書き込む必要があります。

シリアル番号 波長校正データ

Parts

17
QtyValueFootprintReferences
30.1uCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mmC1, C2, C3
2RP2350-ZeroConnector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_VerticalJ2, J3
11kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR1
12kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR2
1500Potentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV1
1Conn_01x02_PinConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ4
1Conn_02x07_Counter_ClockwisePackage_DIP:DIP-14_W7.62mm_SocketJ1
1NJM2732Package_DIP:DIP-8_W7.62mmU1
1NSI45020JZ-DPackage_TO_SOT_SMD:SOT-223-3_TabPin2U2
1SW_SPDTConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalSW1

The 13 most common of 17 parts.

Questions

How big is the EduSpectro4X 07 PCB?

It measures 57 × 47 mm and has 2 copper layers, 1.6 mm thick.

What parts does the EduSpectro4X 07 use?

17 parts, built around the NJM2732D. 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 EduSpectro4X 07 KiCad files?

From the EduSpectro/EduSpectro4X repository on GitHub, at the commit this page was made from: the board is hardware/EduSpectro4X_07/EduSpectro4X_07.kicad_pcb and its schematic hardware/EduSpectro4X_07/EduSpectro4X_07.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the EduSpectro4X 07 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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