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Butane, LPG & Smoke sensor MQ2 breakout

Mostakim52·ESP32-Smart-Helmet·Smart_Helmet_KiCad_Design/Important Libraries/Butane--LPG---Smoke-sensor-MQ2-breakout-hardware-design-main/Butane--LPG---Smoke-sensor-MQ2-breakout-hardware-design-main/CAD/V1.1.1/MQ Breakout.kicad_pcb

Butane, LPG & Smoke sensor MQ2 breakout layout, top view — open source board by Mostakim52

About the Butane, LPG & Smoke sensor MQ2 breakout

Butane, LPG & Smoke sensor MQ2 breakout is an open source PCB design by Mostakim52, published on GitHub under the MIT license. It is a 2-layer board measuring 22 × 38 mm, with 12 components from 9 distinct parts.

Other key parts include the MQ-X and LM393. By type, the board carries 4 resistors, 2 ICs, 2 capacitors, 1 relay and 1 diode.

It belongs with the sensors, iot & wireless and dev boards & breakouts designs in this gallery.

From the project

IoT-enabled ESP32 smart helmet for construction worker safety with fall detection, environmental sensing, and real-time mobile + server alerts.

MQ sensors, including the MQ2 sensor, have the capability to detect various gases. The MQ2 sensor is specifically designed to detect combustible gases such as LPG (liquefied petroleum gas), butane, propane, methane, alcohol, hydrogen, and smoke. These gases are commonly found in residential, industrial, and automotive environments. The sensor’s sensitivity and responsiveness enable it to detect even trace amounts of these gases, making it a valuable tool for gas leakage detection, fire detection, and air quality monitoring applications. It takes a short time to heat up in order to work…

Butane, LPG & Smoke sensor MQ2 breakout, from the project README
From the project README

Main components on the Butane, LPG & Smoke sensor MQ2 breakout

MQ-XLM393

Butane, LPG & Smoke sensor MQ2 breakout bill of materials (BOM)

12 components, 9 distinct parts.

QtyPartRefs
1
MQ-X
U1
1
LM393
U2
2
HOLE_3.2mm
H1, H2
1
HEADER_MALE_4X1
K1
1
purple
D1
2
0.1uF
C1, C2
2
10k
R1, R3
1
TC33X-2-103E
R2
1
2k2
R4

Butane, LPG & Smoke sensor MQ2 breakout design files

The KiCad project lives in the Mostakim52/ESP32-Smart-Helmet repository on GitHub; these links point at the commit this page was built from.

Butane, LPG & Smoke sensor MQ2 breakout: common questions

How big is the Butane, LPG & Smoke sensor MQ2 breakout?

The Butane, LPG & Smoke sensor MQ2 breakout measures 22 × 38 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Butane, LPG & Smoke sensor MQ2 breakout?

12 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the Butane, LPG & Smoke sensor MQ2 breakout design files?

From the Mostakim52/ESP32-Smart-Helmet repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Butane, LPG & Smoke sensor MQ2 breakout design in my own project?

Yes, under the terms of its MIT license, which Mostakim52 chose for the repository.

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