2 layers133 × 20 mm
2 layers142 × 208 mm
Panel
romkey/sensrSensor project hardware - ESP32-S3 base board, light and air sensors
- Size
- 142 × 208 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 616
- Nets
- 570
- Pads
- 1,976
- Tracks, vias
- 4,470, 760
- Pours
- 1,100
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Aug 2025
- Updated
- 5 Nov 2026
Overview
Panel is an open-source printed circuit board by romkey, from the romkey/sensr repository on GitHub, published under the MIT licence. It is a 2-layer board of 142 × 208 mm with 616 parts on 570 nets, routed with 4,470 tracks and 760 vias.
It is built around the LD1117-3.3(MS), LSM6DS3TR-C and SM04B-SRSS-TB(LF)(SN), with the MBR140SFT1G-HXY, TPD2E2U06DCKR-TP and TYPE-C-31-M-12 among its other parts. Its parts include 120 capacitors, 80 resistors, 60 ICs, 40 diodes and 40 connectors. It belongs with the ESP32 boards of this library.
Main components
6
LD1117-3.3(MS)
SOT-2230℃~+125℃@(Ta) 1 1.4V@(1A) 12V 12mA 1A 3.3V Fixed Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMSKSEMIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LSM6DS3TR-C
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 3uA 4KB IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps 运动事件检测、同步与时间戳 LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
SM04B-SRSS-TB(LF)(SN)
SMD,P=1mm,卧贴-25℃~+85℃ 1 1A 1mm 1x4P 2.9mm 4 4.32mm 4P 50V 6mm Auxiliary Solder Pin Copper alloy PA SH Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
MBR140SFT1G-HXY
SOD-123FLSOD-123FL Schottky Diodes ROHSHXY MOSFETSchottky Diodes
TPD2E2U06DCKR-TP
SOT-323MOSFETsTECH PUBLIC
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
README.mdSensr
Sensr is a group of hardware projects intended for environmental sensing.
It currently consists of:
- base board - ESP32-S3 with accelerometer, I2S microphone header, display header, 2 Qwiic ports, particle counter connector
- air - SCD40 CO2 + BME680 temperature/humidity/pressure sensor
- air-stcc4 - new STCC4 CO2 sensor + SHT40 temperature/humidity sensor
- light - TSL25911 light
- light-ltr390uv - LTR390 UV sensor + TSL25911 light sensor
Sensr is an ESP32 S3-based microcontroller intended for environmental sensing, as well as separate sensor boards.
I2C Addresses
0x29 TSL25911 0x74 AS7331 0x49 AS7341 0x53 LT-390
0x76 BME680 0x62 SCD40 0x59 SGP40 0x5D SFA30 0x44 SHT3X-D
0x6A LSM6DS3TR-C
Gas: 0x64 0x65 0x66 0x67 0x68 0x69 0x6B
bodged I2S
SCK - CS - 10 SD - RESET - 9 WS - DC - 46 L/R - SDI (MOSI) - 16
License
Hardware is shared under the CERN-OHL-S-2.0 license.
Software is shared under the MIT license.
Documentation is shared under the CC-BY-SA-4.0 - Attribution-ShareAlike license.
Parts
616| Qty | Value | Footprint | References |
|---|---|---|---|
| 156 | NPTH | NPTH | KiKit_MB_10_1, KiKit_MB_10_2, KiKit_MB_10_3, KiKit_MB_10_4, KiKit_MB_10_5, KiKit_MB_10_6, KiKit_MB_11_1, KiKit_MB_11_2, KiKit_MB_11_3, KiKit_MB_11_4, KiKit_MB_11_5, KiKit_MB_11_6, KiKit_MB_12_1, KiKit_MB_12_2, KiKit_MB_12_3, KiKit_MB_12_4 +140 |
| 70 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C10, C10, C10, C10, C10, C10 +54 |
| 40 | MountingHole_2.2mm_M2_ISO7380 | MountingHole:MountingHole_2.2mm_M2_ISO7380 | M1, M1, M1, M1, M1, M1, M1, M1, M1, M1, M2, M2, M2, M2, M2, M2 +24 |
| 30 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R3, R3, R3, R3, R3, R3, R3, R3, R3, R5, R5, R5, R5, R5, R5 +14 |
| 30 | 10µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C2, C2, C2, C2, C2, C2, C2, C2, C2, C4, C4, C4, C4, C4, C4 +14 |
| 30 | LD1117-3_3 | footprint:SOT-223_L6.7-W3.5-P2.30-BR | U3, U3, U3, U3, U3, U3, U3, U3, U3, U3, U4, U4, U4, U4, U4, U4 +14 |
| 20 | 4.7K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R1, R1, R1, R1, R1, R1, R1, R1, R1, R2, R2, R2, R2, R2, R2 +4 |
| 20 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R7, R7, R7, R7, R7, R7, R7, R7, R7, R8, R8, R8, R8, R8, R8 +4 |
| 20 | SM04B-SRSS-TB_(LF)(SN) | footprint:CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN | J2, J2, J2, J2, J2, J2, J2, J2, J2, J2, J3, J3, J3, J3, J3, J3 +4 |
| 10 | 1µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C8, C8, C8, C8, C8, C8, C8, C8, C8 |
| 10 | 22µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C11, C11, C11, C11, C11, C11, C11, C11, C11 |
| 10 | 270 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R4, R4, R4, R4, R4, R4, R4, R4, R4 |
| 10 | BOOT | EasyEDA:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL_H1.5 | SW2, SW2, SW2, SW2, SW2, SW2, SW2, SW2, SW2, SW2 |
| 10 | CTRLH Logo | 1myFootprints:CTRLH Logo | NOT2, NOT2, NOT2, NOT2, NOT2, NOT2, NOT2, NOT2, NOT2, NOT2 |
| 10 | Conn_01x08_Pin | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J5, J5, J5, J5, J5, J5, J5, J5, J5, J5 |
| 10 | ESP32-S3-WROOM-1(N16R8) | EasyEDA:WIRELM-SMD_ESP32-S3-WROOM-1 | U1, U1, U1, U1, U1, U1, U1, U1, U1, U1 |
| 10 | KiCad-Logo2_5mm_SilkScreen | Symbol:KiCad-Logo2_5mm_SilkScreen | NOT3, NOT3, NOT3, NOT3, NOT3, NOT3, NOT3, NOT3, NOT3, NOT3 |
| 10 | LED | LED_SMD:LED_0805_2012Metric | D1, D1, D1, D1, D1, D1, D1, D1, D1, D1 |
| 10 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G***, G***, G*** |
| 10 | LSM6DS3TR-C | EasyEDA:LGA-14_L3.0-W2.5-P0.50-TL | U2, U2, U2, U2, U2, U2, U2, U2, U2, U2 |
| 10 | MBR140SFT1G | EasyEDA:SOD-123F_L2.8-W1.8-LS3.7-RD | D4, D4, D4, D4, D4, D4, D4, D4, D4, D4 |
| 10 | OSHW-Logo2_7.3x6mm_SilkScreen | 1myFootprints:OSHW-Logo2_7.3x6mm_SilkScreen | NOT4, NOT4, NOT4, NOT4, NOT4, NOT4, NOT4, NOT4, NOT4, NOT4 |
| 10 | PWR | LED_SMD:LED_0805_2012Metric | D2, D2, D2, D2, D2, D2, D2, D2, D2, D2 |
| 10 | RESET | EasyEDA:SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL_H1.5 | SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1, SW1 |
| 10 | RX0 | TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm | TP1, TP1, TP1, TP1, TP1, TP1, TP1, TP1, TP1, TP1 |
| 10 | TPD2E2U06DCKR | EasyEDA:SC-70-3_L2.0-W1.3-P0.65-LS2.1-BL | D3, D3, D3, D3, D3, D3, D3, D3, D3, D3 |
| 10 | TX0 | TestPoint:TestPoint_THTPad_D2.5mm_Drill1.2mm | TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2, TP2 |
| 10 | TYPE-C-31-M-12 | footprint:USB-C-SMD_MC-311D | J6, J6, J6, J6, J6, J6, J6, J6, J6, J6 |
| 10 | ~ | 1myFootprints:INMP4 | U6, U6, U6, U6, U6, U6, U6, U6, U6, U6 |
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Questions
How big is the Panel PCB?
It measures 142 × 208 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Panel use?
616 parts, built around the LD1117-3.3(MS), LSM6DS3TR-C, SM04B-SRSS-TB(LF)(SN) and MBR140SFT1G-HXY. 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 Panel KiCad files?
From the romkey/sensr repository on GitHub, at the commit this page was made from: the board is hw/base board/0.2/panel.kicad_pcb and its schematic hw/air-stcc4/0.1.0/air-stcc4.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Panel 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).