{"title":"Environmental \u0026 Gas","description":"","products":[{"product_id":"mg996r-metal-gear-high-torque-servo-standard-size-rc-robotics-servo-copy","title":"2 Pack MQ‑2 Combustible Gas \u0026 Smoke Sensor Module – LPG, Methane, Hydrogen \u0026 Smoke Detection","description":"\u003ch1\u003e2 Pack MQ‑2 Combustible Gas \u0026amp; Smoke Sensor Module\u003c\/h1\u003e\n\u003ch2\u003eLPG, Methane, Hydrogen \u0026amp; Smoke Detection\u003c\/h2\u003e\n\u003cp\u003eVersatile MQ‑2 combustible gas and smoke sensor module for detecting LPG, methane, hydrogen, alcohol, and smoke, perfect for DIY leak alarms, safety monitors, and smart‑home ventilation projects.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eMQ‑2 Combustible Gas \u0026amp;amp; Smoke Sensor Module Compatibility \u003c\/h2\u003e\n\u003cp\u003eWorks with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and most 5V‑powered microcontroller platforms using the analog output and optional digital threshold output.\u003c\/p\u003e\n\u003ch2\u003eKey Features \u003c\/h2\u003e\n\u003cp\u003eDetects a wide range of combustible gases and fumes including LPG, propane, butane, methane, hydrogen, alcohol, carbon monoxide, and smoke, making it suitable for general leak and smoke detection.\u003c\/p\u003e\n\u003cp\u003eMetal‑oxide (SnO₂) sensing element whose resistance drops as gas concentration increases, providing an analog signal correlated to gas levels.\u003c\/p\u003e\n\u003cp\u003eBreakout module integrates the MQ‑2 sensor, comparator circuit, and trim potentiometer, exposing both analog (AO) and digital (DO) outputs for flexible use.\u003c\/p\u003e\n\u003cp\u003eHigh sensitivity and fast response over a typical detection range of roughly 200–10,000 ppm for many target gases, depending on calibration.\u003c\/p\u003e\n\u003cp\u003eOnboard power and signal LEDs make it easy to verify sensor power and digital alarm output at a glance.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cp\u003eSensor type: MQ‑2 metal‑oxide semiconductor (MOS) gas sensor.\u003c\/p\u003e\n\u003cp\u003eOperating voltage: typically 5 V DC on standard modules (some support 2.5–5 V).\u003c\/p\u003e\n\u003cp\u003eDetection gases: LPG, propane, butane, methane, hydrogen, alcohol, carbon monoxide, and smoke.\u003c\/p\u003e\n\u003cp\u003eTypical concentration range: about 200–10,000 ppm for combustible gases (exact ranges vary by gas and calibration).\u003c\/p\u003e\n\u003cp\u003eHeater voltage: around 5.0 V ± 0.2 V to maintain sensor operating temperature.\u003c\/p\u003e\n\u003cp\u003eOutputs: analog voltage proportional to gas concentration (AO) and digital TTL output (DO) with adjustable trigger threshold via onboard potentiometer.\u003c\/p\u003e\n\u003cp\u003eModule size: typically around 32 × 20 to 40 × 21 mm, with 4‑pin header (VCC, GND, AO, DO).\u003c\/p\u003e\n\u003cp\u003ePreheat time: requires several seconds for basic operation, and up to 24 hours initial burn‑in for stable calibrated measurements.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eIdeal Uses\u003c\/h2\u003e\n\u003cp\u003eDIY gas leak alarms for LPG and natural gas around stoves, heaters, and gas lines (non‑certified, hobby use).\u003c\/p\u003e\n\u003cp\u003eSmoke and fumes detection in workshops, garages, and maker spaces to trigger fans or alerts.\u003c\/p\u003e\n\u003cp\u003eSmart‑home and IoT projects that monitor air for combustible gases and send notifications or control ventilation.\u003c\/p\u003e\n\u003cp\u003eEducational projects exploring gas‑sensing principles, analog signal processing, and calibration with microcontrollers.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp\u003e2 × MQ‑2 Combustible Gas \u0026amp; Smoke Sensor Module.\u003c\/p\u003e\n\u003ch2\u003eSafety Note\u003c\/h2\u003e\n\u003cp\u003eThe MQ‑2 is intended for hobby and educational gas‑detection projects and is not a certified safety device. Do not rely on this module as the only protection against gas leaks or fire; always follow local safety codes and use approved detectors for life‑critical applications.\u003cbr\u003e\u003c\/p\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44770542354567,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/MQ-135AirQualityGasSensor.png?v=1780437193"},{"product_id":"mq-5-liquified-gas-sensor-module-natural-gas-city-gas-sensor-module","title":"2 Pack MQ-5 Liquified Gas Sensor Module Natural Gas City Gas Sensor Module","description":"","brand":"sugar","offers":[{"title":"Default Title","offer_id":44823826727047,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/MQ-5LiquifiedGasSensorModule_6ffbbd55-7cfe-4897-8cbf-f6157e1d498e.jpg?v=1781014224"},{"product_id":"mq-9-air-quality-carbon-monoxide-sensor-module","title":"2 Pack MQ-9 air quality carbon monoxide sensor module","description":"","brand":"sugar","offers":[{"title":"Default Title","offer_id":44823850451079,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/mq9top.jpg?v=1781971935"},{"product_id":"water-droplet-rainwater-sensor-module-environmental-protection-micro-bit-friendly","title":"2 Pack Water Droplet \/ Rainwater Sensor Module – Environmental Protection \u0026 micro:bit‑Friendly","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThis Water Droplet \/ Rainwater Sensor Module consists of a plated “raindrop” detection board and a small amplifier\/comparator module that together measure the presence of water adroplets, condensation, or light rain on the sensor surface. When water bridges the conductive traces, the resistance drops and the module’s output changes, providing a simple way to detect rain, leaks, or surface moisture.\u003c\/p\u003e\n\u003cp\u003eDesigned for education and environmental‑protection experiments, it pairs especially well with micro:bit and other beginner‑friendly boards. Students can build rain alarms, smart windows, and weather‑aware robots that react to real‑world conditions, reinforcing concepts of sustainability and water conservation.\u003c\/p\u003e\n\u003ch2\u003eIdeal Uses\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRain detectors and alarms \u0026amp;amp; that light LEDs or sound buzzers when it starts raining.\u003c\/li\u003e\n\u003cli\u003eSmart‑window or clothes‑drying protection, automatically warning or triggering actions when rain is detected.\u003c\/li\u003e\n\u003cli\u003eLeak or water‑ingress detection \u0026amp;amp; on windowsills, enclosures, or environmental protection projects.\u003c\/li\u003e\n\u003cli\u003emicro:bit classroom activities \u0026amp;amp; demonstrating water sensing, weather monitoring, and climate‑aware IoT devices.\u003c\/li\u003e\n\u003cli\u003eBasic\u0026amp;amp; water level \/ dampness sensing \u0026amp;amp; for experiments, plant care, or simple soil‑wetness detection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWorks with micro:bit via analog or digital input pins; widely used in MakeCode examples for rain alarms and sensing projects.\u003c\/li\u003e\n\u003cli\u003eCompatible with Arduino, ESP32\/ESP8266, and other microcontrollers using AO (analog) or DO (digital threshold) outputs.\u003c\/li\u003e\n\u003cli\u003eTypically operates from\u0026amp;nbsp;3.3–5 V, making it suitable for both 5 V Arduino boards and 3.3 V environments like micro:bit and many ESP32 boards (confirm your specific module).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits into common\u0026amp;nbsp;robot and smart‑car kits\u0026amp;nbsp;as an environmental sensor for rain, puddles, or water hazards.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSoil Moisture Sensor Module\u003c\/li\u003e\n\u003cli\u003eRaindrop detection board with interleaved conductive traces that change resistance when wet.\u003c\/li\u003e\n\u003cli\u003eCompanion detection module with comparator and potentiometer to generate a digital “wet\/dry” signal plus an analog moisture output (on many variants).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAnalog output (where provided) representing relative wetness, readable as 0–1023 on typical 10‑bit ADCs (e.g., micro:bit pins 0\/1\/2).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDigital output that flips state when moisture crosses a user‑set threshold, ideal for driving LEDs, buzzers, or logic inputs.\u003c\/li\u003e\n\u003cli\u003eSimple 3‑ or 4‑wire connection (VCC, GND, AO\/DO), easy to integrate in micro:bit and Arduino projects with dupont wires.\u003c\/li\u003e\n\u003cli\u003eOften includes indicator LEDs and an adjustable sensitivity potentiometer on the control board.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specs (Typical, Raindrop Module)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSoil Moisture Sensor Module\u003c\/li\u003e\n\u003cli\u003eSpecs vary by vendor; these values are representative:\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: typically 3.3–5 V DC.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutputs:\u003cbr\u003eAO – analog voltage (0–VCC) increasing with moisture (module‑dependent).\u003cbr\u003eDO – digital “rain detected” signal from comparator (high\/low).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetection Principle: resistive; water\/condensation bridges PCB traces and lowers resistance.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTypical micro:bit readings: analog values from near 0 (dry) up to ~1023 (heavy rain), with a user‑chosen threshold (e.g., ~200).\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eForm Factor: flat raindrop PCB (probe) plus small blue control board, each with mounting holes or pads.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Raindrop \/ water droplet detection probe (PCB).\u003c\/li\u003e\n\u003cli\u003e1 × Water \/ rain detection module (amplifier\/comparator board) with AO\/DO outputs.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSafety Note\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBecause this is a resistive moisture sensor, continuous power in wet conditions can accelerate corrosion of the detection pads; for longer life, power the sensor only when taking readings and dry it after experiments.\u003c\/li\u003e\n\u003cli\u003eAvoid using the bare module in high‑voltage or mains‑water environments; keep it for low‑voltage educational and hobby projects and ensure all wiring is insulated and secure.\u003c\/li\u003e\n\u003cli\u003eWhen used outdoors, protect the electronics (but not the sensing area) from direct splashes and contaminants to reduce false readings and extend sensor life.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44922499498119,"sku":null,"price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/WaterDropletRainwaterSensorModule_EnvironmentalProtectionmicrobit_Friendlytop.jpg?v=1781874669"}],"url":"https:\/\/sugarstore.dev\/collections\/distance-presence-copy.oembed","provider":"sugar","version":"1.0","type":"link"}