2 layers173 × 122.5 mm
2 layers100 × 50 mm
This PCB is designed for an air quality monitoring station, with air quality sensors and a LoRa module placed around the STM32F103.
- Size
- 100 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 49
- Pads
- 155
- Tracks, vias
- 221, 26
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Apr 2025
- Updated
- 2 Aug 2025
Overview
LoRa is an open-source printed circuit board by sukrudmrc, from the sukrudmrc/AirQualityPCB repository on GitHub. It is a 2-layer board of 100 × 50 mm with 49 parts on 49 nets, routed with 221 tracks and 26 vias.
Its parts include 19 capacitors, 6 resistors, 5 connectors, 3 diodes and 2 inductors. It belongs with the radio and wireless and sensors and measurement boards and the STM32 boards of this library.
README
README.mdAirQualityPCB
This PCB is designed for an air quality monitoring station, with air quality sensors and a LoRa module placed around the STM32F103.
SYSTEM SCHEMTAIC
3D-PCB
Final PCB
SENSORS
SHT31 Temprature & Humanity
The SHT31 sensor is a highly accurate and stable sensor with low power consumption.
MiCS-5524 Carbon monoxide
SDS011 PM2.5 & PM10
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4, C8, C9, C11, C12, C14, C15, C16, C17, C18, C19 |
| 4 | 1000uF 25V 10x17 5MM | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C5, C6, C10, C13 |
| 3 | 100 | Resistor_SMD:R_0603_1608Metric | R3, R4, R5 |
| 2 | 100UH 11X13MM RADIAL | Inductor_THT:L_Radial_D10.0mm_P5.00mm_Neosid_SD12_style3 | L1, L2 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C7 |
| 1 | Conn_01x03_Pin | Library:SSL-12F20-G4 | J5 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x04_Socket | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | pm2.5 |
| 1 | Conn_01x07_Socket | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | LoRa1 |
| 1 | Crystal_GND24_Small | Crystal:Crystal_SMD_5032-4Pin_5.0x3.2mm | Y1 |
| 1 | MiCS-5524 CO | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | PowerInput3.3 | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_2-G-3.5_1x02_P3.50mm_Vertical | J1 |
| 1 | PowerInput5 | Connector_Phoenix_MC:PhoenixContact_MCV_1,5_2-G-3.5_1x02_P3.50mm_Vertical | J2 |
| 1 | SHT31 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | SHT31 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | SWD1 |
| 1 | SW_Push | Library:DTS-3_Button | RESET1 |
| 1 | TP_ADC | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | TP_En | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | TP_GND | TestPoint:TestPoint_Pad_2.0x2.0mm | TP1 |
| 1 | TP_M0 | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | TP_M1 | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | TP_Scl | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | TP_Sda | TestPoint:TestPoint_Pad_D1.5mm | TP7 |
| 1 | debug_led 1206 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | led3.3 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | led5 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
Questions
How big is the LoRa PCB?
It measures 100 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LoRa use?
49 parts. 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 LoRa KiCad files?
From the sukrudmrc/AirQualityPCB repository on GitHub, at the commit this page was made from: the board is PCB_V1/LoRa.kicad_pcb and its schematic PCB_V1/LoRa.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LoRa design in my own project?
Its repository states no licence, so its author keeps all rights: ask sukrudmrc before reusing the design.
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