Detect DANGEROUS Gas With This Sensor (MQ / MQ-7 / Arduino)
MQ-7 Gas Sensor Arduino Tutorial — wire it in minutes, read live values, and use the same starter code with most MQ sensors.
JOIN THE DISCORD RIGHT NOW NERD: https://madmika.co/discord
Code from this video: https://madmika.co/products/mq-gas-se...
Sensors from this video!:
MQ Gas Sensor 9-in-1 Kit — https://amzn.to/3NXQzD4
🛒 My Recommended Sensors and Kits (Works for MOST Videos)
SunFounder Starter Kit (Best value) — https://www.sunfounder.com/collection...
SunFounder Smart Car 3-in-1 Kit — https://www.sunfounder.com/collection...
ELEGOO UNO Kit (On Sale) — https://amzn.to/4rFIdOX
KEYESTUDIO 48-in-1 Sensor Kit — https://amzn.to/4r6Dups
ELEGOO 37-in-1 Sensor Kit — https://amzn.to/3MttBmN
Official Arduino UNO — https://amzn.to/4r09POK
ELEGOO UNO (Budget board) — https://amzn.to/4c3cin9
Dupont Jumper Wires — https://amzn.to/4aczmNm
Adjustable Bench Power Supply — https://amzn.to/4rcWRgI
12V Power Supply — https://amzn.to/3MvDqAE
🛒 Best deal (AliExpress — slower shipping)
• MQ-7 + other MQ options (cheap): [https://s.click.aliexpress.com/e/_c45...](https://s.click.aliexpress.com/e/_c45...)
• Arduino Uno clone (budget): [https://s.click.aliexpress.com/e/_c40...](https://s.click.aliexpress.com/e/_c40...)
• Dupont jumper wires (get one of each): [https://s.click.aliexpress.com/e/_c40...](https://s.click.aliexpress.com/e/_c40...)
• 5V power supply (budget): [https://s.click.aliexpress.com/e/_c33...](https://s.click.aliexpress.com/e/_c33...)
🧠 What this video covers
• What MQ sensors are actually doing inside (simple explanation)
• MQ-7 wiring (3-pin vs 4-pin) + reading the analog output
• Baseline + threshold “gas detected” demo using beginner-friendly code
Join the Discord (help + show your builds): [http://bit.ly/mikaelabehseradiscord2](http://bit.ly/mikaelabehseradiscord2)
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What sensor should I test next (MQ-2 smoke, MQ-135 air quality, MQ-4 natural gas, etc.)?
if you got something you want to see, post it in the Discord: [http://bit.ly/mikaelabehseradiscord2](http://bit.ly/mikaelabehseradiscord2)
Other Links you MIGHT like:
TCS3200 Color Sensor — https://amzn.to/45VGZXt
Ultrasonic Sensor — https://amzn.to/4rJAEXy
Temperature & Humidity Sensor — https://amzn.to/4cgNJmu
MQ Gas Sensor 9-in-1 Kit — https://amzn.to/3NXQzD4
Pressure Transducer Sensor — https://amzn.to/4aodsXR
Vibration Sensor — https://amzn.to/4av9Zqy
Knock/Tap Sensor — https://amzn.to/4qrmclU
Capacitive Touch Sensor — https://amzn.to/4aDPlW9
Capacitive Touch Matrix Module — https://amzn.to/4kn8leO
Photo Interrupter Sensor — https://amzn.to/4r1wDxD
Photoresistor (LDR) — https://amzn.to/4thxvj8
Heart Rate Sensor — https://amzn.to/4bKX99U
Fingerprint Sensor — https://amzn.to/3MxCifO
Tracking Sensor — https://amzn.to/3O3ECM4
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RTC Module — https://amzn.to/4qrJo3p
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Motor Driver — https://amzn.to/3O5xH5a
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OLED Display (0.96" Single Color) — https://amzn.to/45XKKvp
TFT LCD Display — https://amzn.to/45TvDDo
LCD Character Display — https://amzn.to/4rqwPXD
E-Paper Display (2.9") — https://amzn.to/3O3rW7X
E-Paper Display (4.2") — https://amzn.to/403Oacs
Peristaltic Water Pump — https://amzn.to/3ZYJnJr
Water Pump (5V) — https://amzn.to/3O8fEes
Water Pump (12V) — https://amzn.to/45ZcpMt
Water Pump (24V) — https://amzn.to/4ao9uOI
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Water Solenoid Valve — https://amzn.to/3NXN8fH
Water Level Sensor — https://amzn.to/46zrm87
3D Printing Links:
PLA Filament I Use — https://amzn.to/4rb5tVd
74-Pc 3D Printing Tool Kit — https://amzn.to/4akcgVg
Dremel Kit — https://amzn.to/4rLoqOd
My 3D Printer — https://amzn.to/3O2MayI