4 layers68.1 × 75 mm
2 layers0.8 × 25.4 mm
Smoke gas detector
arulkumarank/PCB_Design_Smoke_Gas_Detector- Size
- 0.8 × 25.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 10
- Pads
- 33
- Tracks, vias
- 52, 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Mar 2025
- Updated
- 2 Apr 2025
Overview
Smoke gas detector is an open-source printed circuit board by arulkumarank, from the arulkumarank/PCB_Design_Smoke_Gas_Detector repository on GitHub. It is a 2-layer board of 0.8 × 25.4 mm with 9 parts on 10 nets, routed with 52 tracks and 2 vias.
It is built around the MQ-2, L7805 and SS8050. Its parts include 2 ICs, 1 capacitor, 1 resistor, 1 diode and 1 transistor.
Main components
3
MQ-2
插件多气体检测能力 插件 Gas Sensors ROHSZhengzhou Winsen Elec TechGas Sensors
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.mdView this project on CADLAB.io.
PCB_Design_Smoke_Gas_Detector
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_CLIFF_FC681465S_SMT_Horizontal | J1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | C_Polarized_US | Capacitor_THT:CP_Axial_L10.0mm_D4.5mm_P15.00mm_Horizontal | C1 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-2 | U1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | MQ-2 | Sensor:MQ-6 | U2 |
| 1 | R | Resistor_SMD:R_0612_1632Metric_Pad1.18x3.40mm_HandSolder | R1 |
| 1 | R_Potentiometer | Potentiometer_THT:Potentiometer_ACP_CA6-H2,5_Horizontal | RV1 |
| 1 | SS8050 | Package_TO_SOT_SMD:SOT-23 | Q1 |
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Questions
How big is the Smoke gas detector PCB?
It measures 0.8 × 25.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Smoke gas detector use?
9 parts, built around the MQ-2, L7805 and SS8050. 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 Smoke gas detector KiCad files?
From the arulkumarank/PCB_Design_Smoke_Gas_Detector repository on GitHub, at the commit this page was made from: the board is smoke_gas_detector/smoke_gas_detector.kicad_pcb and its schematic smoke_gas_detector/smoke_gas_detector.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smoke gas detector design in my own project?
Its repository states no licence, so its author keeps all rights: ask arulkumarank before reusing the design.