CO-sensor-MQ7-breakout hardware design
SolderedElectronics·CO-sensor-MQ7-breakout-hardware-design·CAD/V1.1.1/MQ Breakout.kicad_pcb
About the CO-sensor-MQ7-breakout hardware design
CO-sensor-MQ7-breakout hardware design is an open source PCB design by SolderedElectronics, published on GitHub under the TAPR-OHL-1.0 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 and dev boards & breakouts designs in this gallery.
From the project
Hardware design, BOM, gerbers and 3D files for CO-sensor-MQ7-breakout designed by Soldered Electronics.
The MQ7 sensor’s sensitivity and selectivity allow it to effectively detect and measure carbon monoxide levels, making it a crucial tool for applications such as gas leakage detection, safety systems, and environmental monitoring. By interfacing the MQ7 sensor with appropriate electronic circuits and microcontrollers like Arduino, you can create systems that provide real-time monitoring and prompt alerts in the presence of hazardous CO concentrations. It needs a bit of time to warm up in order to work correctly.

Main components on the CO-sensor-MQ7-breakout hardware design
CO-sensor-MQ7-breakout hardware design bill of materials (BOM)
12 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MQ-X | MQ | U1 |
| 1 | LM393 | SOIC−8 | U2 |
| 2 | HOLE_3.2mm | HOLE_3.2mm | H1, H2 |
| 1 | HEADER_MALE_4X1 | HEADER_MALE_4X1 | K1 |
| 1 | purple | 0402LED | D1 |
| 2 | 0.1uF | 0603C | C1, C2 |
| 2 | 10k | 0603R | R1, R3 |
| 1 | TC33X-2-103E | tc33x-2-103e | R2 |
| 1 | 2k2 | 0402R | R4 |
CO-sensor-MQ7-breakout hardware design design files
The KiCad project lives in the SolderedElectronics/CO-sensor-MQ7-breakout-hardware-design repository on GitHub; these links point at the commit this page was built from.
CO-sensor-MQ7-breakout hardware design: common questions
How big is the CO-sensor-MQ7-breakout hardware design?
The CO-sensor-MQ7-breakout hardware design measures 22 × 38 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CO-sensor-MQ7-breakout hardware design?
12 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the CO-sensor-MQ7-breakout hardware design design files?
From the SolderedElectronics/CO-sensor-MQ7-breakout-hardware-design repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the CO-sensor-MQ7-breakout hardware design design in my own project?
Yes, under the terms of its TAPR-OHL-1.0 license, which SolderedElectronics chose for the repository.
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