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Analog Capacitive Soil Moisture Sensor
Accurately measure soil moisture levels without corrosion issues - this capacitive soil moisture sensor uses a change in capacitance rather than resistivity, dramatically extending sensor lifespan. Outputs a simple analog voltage signal that varies with soil moisture content, making it ideal for automated plant watering systems, smart agriculture projects, and environmental monitoring. Available at The Engineer Store, Bengaluru with fast shipping and full technical support.
Specifications
| Sensor Type | Capacitive Soil Moisture Sensor (Corrosion-Resistant) |
| Output Signal | Analog Voltage (proportional to moisture level) |
| Operating Voltage | 3.3V - 5.5V DC |
| Output Voltage Range | ~1.2V (wet) to ~2.5V (dry) at 3.3V supply (typical) |
| Operating Current | <= 5mA |
| Interface | 3-Pin Header (VCC, GND, Analog Output) |
| Sensing Element | Capacitive plate with corrosion-resistant coating |
| PCB Material | FR-4 with anti-corrosion lacquer / immersion gold finish |
| Board Dimensions | Approx. 98mm x 23mm (3.86" x 0.91") |
| Compatible Platforms | Arduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, and other MCUs |
| Response Time | Near-instantaneous analog reading |
| Lifespan Advantage | Significantly longer than resistive sensors (no electrolysis/corrosion) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the Capacitive Soil Moisture Sensor?
- Corrosion-Free Design: Unlike resistive soil moisture sensors that degrade quickly due to electrolysis, this capacitive sensor has no exposed metal electrodes in the soil, ensuring a dramatically longer operational lifespan.
- Simple Analog Output: Provides a straightforward analog voltage that can be read directly by any microcontroller's ADC pin - no complex libraries or communication protocols needed.
- Wide Voltage Compatibility: Operates from 3.3V to 5.5V, making it directly compatible with both 3.3V boards (ESP32, ESP8266, Raspberry Pi Pico) and 5V boards (Arduino Uno, Mega, Nano).
- Low Power Consumption: Draws under 5mA, making it well-suited for battery-powered and solar-powered IoT deployments in the field.
- The Engineer Store Build Quality: FR-4 PCB with protective coating resists moisture ingress into the electronics section, ensuring reliable outdoor operation.
- 100% Authentic: Sourced directly from trusted and authorized suppliers - quality verified before dispatch.
- Fast Shipping: 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available within Bengaluru.
- Expert Technical Support: Full guidance on wiring, calibration, and integration included with your purchase.
How It Works
The sensor operates on the principle that the dielectric constant of soil changes with its moisture content. The capacitive sensing area forms one plate of a capacitor, with the surrounding soil acting as the dielectric medium. As soil moisture increases, the dielectric constant rises, which increases the capacitance. The onboard circuit converts this capacitance change into an analog voltage - wetter soil produces a lower voltage, and drier soil produces a higher voltage. Simply connect the output pin to an analog input on your microcontroller, read the ADC value, and map it to a moisture percentage through calibration.
Project Ideas
- Automatic Plant Watering System: Combine with a relay module and a water pump to build a self-watering system that irrigates plants only when soil moisture drops below a set threshold - perfect for home gardens, balcony planters, or greenhouses.
- IoT Smart Agriculture Monitor: Pair with an ESP32 or ESP8266 to transmit real-time soil moisture data to cloud platforms like Blynk, ThingSpeak, or Home Assistant. Monitor multiple zones of a farm remotely from your phone.
- Weather Station & Environmental Logger: Integrate with temperature, humidity, and rain sensors to build a comprehensive environmental monitoring station that logs soil conditions over time using an SD card or cloud database.
- Precision Drip Irrigation Controller: Use multiple sensors across different soil zones with an Arduino Mega or ESP32 to control individual drip irrigation valves, optimizing water usage and crop yield.
- Student & STEM Education: Excellent hands-on project for learning about analog sensors, ADC conversion, calibration techniques, and real-world data acquisition - ideal for school science fairs and engineering coursework.
- Terrarium & Indoor Garden Automation: Monitor moisture levels inside sealed terrariums or
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Analog Capacitive Soil Moisture Sensor Online in India
Purchase the Analog Capacitive Soil Moisture Sensor online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Analog Capacitive Soil Moisture Sensor with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Analog Capacitive Soil Moisture Sensor at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Analog Capacitive Soil Moisture Sensor
Accurately measure soil moisture levels without corrosion issues - this capacitive soil moisture sensor uses a change in capacitance rather than resistivity, dramatically extending sensor lifespan. Outputs a simple analog voltage signal that varies with soil moisture content, making it ideal for automated plant watering systems, smart agriculture projects, and environmental monitoring. Available at The Engineer Store, Bengaluru with fast shipping and full technical support.
Specifications
| Sensor Type | Capacitive Soil Moisture Sensor (Corrosion-Resistant) |
| Output Signal | Analog Voltage (proportional to moisture level) |
| Operating Voltage | 3.3V - 5.5V DC |
| Output Voltage Range | ~1.2V (wet) to ~2.5V (dry) at 3.3V supply (typical) |
| Operating Current | <= 5mA |
| Interface | 3-Pin Header (VCC, GND, Analog Output) |
| Sensing Element | Capacitive plate with corrosion-resistant coating |
| PCB Material | FR-4 with anti-corrosion lacquer / immersion gold finish |
| Board Dimensions | Approx. 98mm x 23mm (3.86" x 0.91") |
| Compatible Platforms | Arduino, ESP32, ESP8266, Raspberry Pi (with ADC), STM32, and other MCUs |
| Response Time | Near-instantaneous analog reading |
| Lifespan Advantage | Significantly longer than resistive sensors (no electrolysis/corrosion) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the Capacitive Soil Moisture Sensor?
- Corrosion-Free Design: Unlike resistive soil moisture sensors that degrade quickly due to electrolysis, this capacitive sensor has no exposed metal electrodes in the soil, ensuring a dramatically longer operational lifespan.
- Simple Analog Output: Provides a straightforward analog voltage that can be read directly by any microcontroller's ADC pin - no complex libraries or communication protocols needed.
- Wide Voltage Compatibility: Operates from 3.3V to 5.5V, making it directly compatible with both 3.3V boards (ESP32, ESP8266, Raspberry Pi Pico) and 5V boards (Arduino Uno, Mega, Nano).
- Low Power Consumption: Draws under 5mA, making it well-suited for battery-powered and solar-powered IoT deployments in the field.
- The Engineer Store Build Quality: FR-4 PCB with protective coating resists moisture ingress into the electronics section, ensuring reliable outdoor operation.
- 100% Authentic: Sourced directly from trusted and authorized suppliers - quality verified before dispatch.
- Fast Shipping: 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available within Bengaluru.
- Expert Technical Support: Full guidance on wiring, calibration, and integration included with your purchase.
How It Works
The sensor operates on the principle that the dielectric constant of soil changes with its moisture content. The capacitive sensing area forms one plate of a capacitor, with the surrounding soil acting as the dielectric medium. As soil moisture increases, the dielectric constant rises, which increases the capacitance. The onboard circuit converts this capacitance change into an analog voltage - wetter soil produces a lower voltage, and drier soil produces a higher voltage. Simply connect the output pin to an analog input on your microcontroller, read the ADC value, and map it to a moisture percentage through calibration.
Project Ideas
- Automatic Plant Watering System: Combine with a relay module and a water pump to build a self-watering system that irrigates plants only when soil moisture drops below a set threshold - perfect for home gardens, balcony planters, or greenhouses.
- IoT Smart Agriculture Monitor: Pair with an ESP32 or ESP8266 to transmit real-time soil moisture data to cloud platforms like Blynk, ThingSpeak, or Home Assistant. Monitor multiple zones of a farm remotely from your phone.
- Weather Station & Environmental Logger: Integrate with temperature, humidity, and rain sensors to build a comprehensive environmental monitoring station that logs soil conditions over time using an SD card or cloud database.
- Precision Drip Irrigation Controller: Use multiple sensors across different soil zones with an Arduino Mega or ESP32 to control individual drip irrigation valves, optimizing water usage and crop yield.
- Student & STEM Education: Excellent hands-on project for learning about analog sensors, ADC conversion, calibration techniques, and real-world data acquisition - ideal for school science fairs and engineering coursework.
- Terrarium & Indoor Garden Automation: Monitor moisture levels inside sealed terrariums or
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy Analog Capacitive Soil Moisture Sensor Online in India
Purchase the Analog Capacitive Soil Moisture Sensor online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Analog Capacitive Soil Moisture Sensor with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Analog Capacitive Soil Moisture Sensor at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.