2 layers86.6 × 56 mm Card env sensor, the printed circuit board in 3D

Card env sensor

Outdoorの開発・検証はファームウェア、 Web受信アプリ、BLE仕様を参照。 Card firmwareはv2基板で毎分測定・BLE送信、 10分ごとのSD一括記録、1時間ごとの電子ペーパー更新を行う。 iPhoneアプリは共通BLEで受信し、バックグラウンド収集・端末内の履歴保存・JSON / CSV書き出しを行う。資料の一覧はデータシートにある。

Full screen GitHub .kicad_pcb

Size: 86.6 × 56 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 78
Nets: 91
Pads: 347
Tracks, vias: 53, 3
Pours: 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 2 Aug 2026
Updated: 3 Nov 2026

Overview

Card env sensor is an open-source printed circuit board by Liesegang, from the Liesegang/env_sensor repository on GitHub. It is a 2-layer board of 86.6 × 56 mm with 78 parts on 91 nets, routed with 53 tracks and 3 vias.

It is built around the BME690, OPT4001YMNR and SGP41-D-R4, with the STCC4-D-R3, RB160M-30TR and IRLML6402 among its other parts. Its parts include 40 capacitors, 9 resistors, 8 ICs, 7 inductors and 5 diodes. It belongs with the sensors and measurement boards of this library.

Main components

README

README.md

Environment sensors

機種ごとに回路・ファームウェア・受信アプリ・プロトコルをまとめる。

text

card/
  hardware/       v1 KiCad / v2 Fusionの回路・基板・3Dモデル
  firmware/       nRF54L15 / Zephyr
  software/       SwiftUI / iPhoneのBLE収集・履歴アプリ
outdoor/
  hardware/       env_sensor_3の回路・基板
  firmware/       nRF54L15 / Zephyr
  software/       TypeScript / ReactのWeb BLE受信アプリ
  protocol/       共通BLEスキーマへの互換入口
shared/
  firmware/driver/     cardとoutdoor共通のセンサー・表示ドライバー
  firmware/telemetry/  共通BLEエンコーダー・GATT通信
  protocol/           BLEの共通スキーマ・C / TypeScript / Swiftコード生成
room/
  hardware/       env_sensor_1aの回路・基板
docs/
  datasheets/     機種共通のメーカー資料

BMV080のIC9はセンサーpinとコネクターpadの対応が反転している。配線の照合結果を参照。回路・基板の配線は未修正。

リポジトリのルートから実行する：

python3 outdoor/protocol/generate.py --check
outdoor/firmware/scripts/fw test
cd outdoor/software
npm ci
npm run dev

ファームウェアのSDK、バックアップ、実機ログはoutdoor/firmware/.local/へ保存し、Gitに含めない。

Category and platform

Sensors and measurement

Project files

Show this board on your page

https://pcbkit.io/boards/Liesegang/env_sensor

The board's own page, for a message or a post.

Source

Repository: Liesegang/env_sensor
Board file: card/hardware/v1/card_env_sensor.kicad_pcb
Commit: 564e4a3
Licence: Not stated

Parts

Qty	Value	Footprint	References
10	10u/25V	Capacitor_SMD:C_0603_1608Metric	C14, C15, C16, C17, C18, C19, C33, C35, C37, C39
6	0.1u	Capacitor_SMD:C_0201_0603Metric	C3, C24, C28, C32, C38, C40
6	1u/50V	Capacitor_SMD:C_0603_1608Metric	C10, C11, C20, C21, C25, C26
5	1u	Capacitor_SMD:C_0402_1005Metric	C1, C2, C6, C27, C31
4	10u	Capacitor_SMD:C_0603_1608Metric	C4, C5, C8, C9
4	RB160M-30TR	Diode_SMD:D_SOD-123F	D2, D3, D4, D5
3	10k	Resistor_SMD:R_0402_1005Metric	R2, R4, R5
3	4.7u/25V	Capacitor_SMD:C_0805_2012Metric	C12, C30, C34
2	0.2R	Resistor_SMD:R_1206_3216Metric	R9, R10
2	10uH	Inductor_SMD:L_0603_1608Metric	L4, L7
2	1M	Resistor_SMD:R_0402_1005Metric	R7, R8
2	2.2uH	Inductor_SMD:L_0603_1608Metric	L2, L3
2	470n/25V	Capacitor_SMD:C_0603_1608Metric	C13, C23
2	BLM18PG121SN1D	Inductor_SMD:L_0603_1608Metric	L5, L6
1	0.1u/50V	Capacitor_SMD:C_0201_0603Metric	C29
1	100u/6.3V	Capacitor_SMD:C_1210_3225Metric	C36
1	150k	Resistor_SMD:R_0402_1005Metric	R3
1	2.2u	Capacitor_SMD:C_0201_0603Metric	C7
1	2.2u/6.3V	Capacitor_SMD:C_0201_0603Metric	C22
1	32.768k	SamacSys_Parts:FC12M327680KDA0	Y1
1	4.7	Resistor_SMD:R_0402_1005Metric	R6
1	4.7uH	Inductor_SMD:L_0603_1608Metric	L1
1	BME690	SamacSys_Parts:BME690	IC3
1	Conn_01x02	Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal	J1
1	ES4L15BA1	MyLibrary:ES4L15BA1	IC1
1	FH34SRJ50S05SH50	SamacSys_Parts:FH34SRJ50S05SH50	CON2
1	IRLML6344TRPBFTR	Package_TO_SOT_SMD:SOT-23	Q2
1	IRLML6402	Package_TO_SOT_SMD:SOT-23	Q1
1	LED	LED_SMD:LED_0603_1608Metric	D1
1	OPT4001YMNR	SamacSys_Parts:OPT4001YMNR	IC7
1	PINH6IDC	MyLibrary:PINH6IDC	CON1
1	SFA40	MyLibrary:SFA40	IC6
1	SGP41-D-R4	SamacSys_Parts:SON80P244X244X95-7N	IC4
1	SHT4x	Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad	U1
1	SK-12D11VG3	SamacSys_Parts:SK12D11VG3	S1
1	STCC4-D-R3	SamacSys_Parts:STCC4DR3	IC5
1	TMHU27	SamacSys_Parts:TMHU27	S2
1	UJC-HP-3-SMT-TR	SamacSys_Parts:UJCHP3SMTTR	J2
1	nPM1300-QEXX	Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.6x3.6mm_ThermalVias	IC2

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Questions

How big is the Card env sensor PCB?

It measures 86.6 × 56 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Card env sensor use?

78 parts, built around the BME690, OPT4001YMNR, SGP41-D-R4 and STCC4-D-R3. 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 Card env sensor KiCad files?

From the Liesegang/env_sensor repository on GitHub, at the commit this page was made from: the board is card/hardware/v1/card_env_sensor.kicad_pcb and its schematic card/hardware/v1/card_env_sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Card env sensor design in my own project?

Its repository states no licence, so its author keeps all rights: ask Liesegang before reusing the design.

Overview

Main components

BME690

OPT4001YMNR

SGP41-D-R4

STCC4-D-R3

RB160M-30TR

IRLML6402

UJC-HP-3-SMT-TR