The Gravity: Analog Capacitive Corrosion-Resistant Soil Moisture Sensor is designed for accurate and long-lasting soil monitoring in gardening, agriculture, and research applications. Unlike resistive sensors, its capacitive design provides a 2–3 times longer lifespan by preventing corrosion, ensuring durability in both indoor and outdoor environments. Operating within a 3.3V–5.5V input range, the sensor outputs a stable 1.2–2.5V analog signal, making it fully compatible with Arduino, Raspberry Pi, and other low-voltage microcontrollers. Its waterproof detection area enhances reliability in humid or wet conditions, making it an excellent choice for smart irrigation, greenhouse monitoring, and IoT-based agriculture systems. With the Gravity 3-pin interface, it can be directly connected to a Gravity I/O expansion shield, simplifying integration for rapid prototyping. This sensor is the ideal solution for students, hobbyists, and professionals who require dependable soil moisture detection for plant health monitoring and automation projects. Featured By RoboticsBD.
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Automatic On/Off control for pumps, motors, and valves. Rated for 250V at 10(8A) and 380V at 10(4A). 2-meter wire length with IP68 protection. Suitable for non-flammable liquids; not explosion-proof. High buoyancy and hermetically sealed for reliable operation.
ESP32 Bluetooth Wi-Fi development board, support NodeMCU / Arduino DHT11 temperature and humidity sensor CP2104 communication chip USB TO TTL Micro USB port Soil probe (long) soil temperature and humidity detection module 18650 Lithium Battery Holder Powered (Battery is not included)
Based on MAX30105 – heart rate, oximeter, smoke sensor Green, red, and infra-red LEDs Interface: I2C (address 0x57) Compatible with 3.3V and 5V logic levels.
Working voltage: 5.00V DC Working current: 40mA (MAX) Response time: <500ms Insulation resistance: 100MΩ (Min) Analogue output: 0~4.5V; Digital output: high/low-level signal (the corresponding threshold can be selected by adjusting the potentiometer) Operating temperature: -20℃~90℃
NPK soil nutrient measurement RS485 MODBUS-RTU output 5–30V input, Arduino compatible IP68 waterproof, anti-corrosion probe Fast, accurate, stable readings For agriculture, irrigation, researchIf you're looking to work with an NPK sensor, you'll quickly notice that most options come with either Chinese-only documentation or limited support, making them...
This Gravity: Analog Spear Tip pH Sensor / Meter Kit can directly stab into semisolid material to measure the pH value. It can be used to measure the pH value of wet soil and various foods. The probe is equipped with a stainless-steel spear tip, allowing it to be directly stabbed into soft materials without damaging the sensor. One of its most valuable...
Wide voltage operation: 3.3~5.5V 0~2.3V analog signal output, compatible with 5V, 3.3V two control systems The excitation source is an AC signal, effectively preventing probe polarization Waterproof probe for long-term immersion in water
Underwater ultrasonic obstacle avoidance sensor with 2–300cm range Operates on a wide voltage range of 5–24V with low power consumption IP68 waterproof rating ensures reliable underwater use up to 10m depth Compact size, lightweight, and minimal blind spots for easy integration UART output with fast 10ms response time for real-time navigation Ideal for...
Gravity: Analog TDS Sensor/Meter for Arduino is an Arduino-compatible TDS Meter Kit for measuring TDS value of the water, to reflect the cleanliness of the water. TDS meter can be applied to domestic water, hydroponic and other fields of water quality testing. You may also check Liquid Senser Selection Guide to get better familiar with our liquid sensor...
Gravity analog turbidity sensor for measuring water quality with Arduino Detects suspended particles via light transmittance and scattering rate Provides both analog (0–4.5V) and digital (high/low) outputs Adjustable digital threshold for flexible microcontroller integration Suitable for rivers, wastewater, lab tests, and environmental monitoring Compact,...
LDR module 4 PIN Operating voltage 3.3V-5V Signal output indicator light. LDR module 4 PIN Able to detect ambient brightness and light intensity Adjustable sensitivity (via blue digital potentiometer adjustment)
Operating voltage: DC 5 V. The analog output voltage, the higher the concentration the higher the voltage. The carbon monoxide detection with better sensitivity. With a long service life and reliable stability. Rapid response and recovery characteristics. Range: 10 to 1000 ppm. RoboticsBD
Using high-quality dual-panel design, with power indicator and TTL signal output instructions. The switching signal having a DO (TTL) output and analog output AO. TTL output valid signal is low. The higher the voltage, the concentration of the analog output voltage is higher. A hydrogen gas detection with good sensitivity. Has a long life and reliable...
It has a relay status indicator led Power LED(Green), 8 relay status indicator LED(Red) Relay control interface by single-chip IO. Low-level suction close, high-level release. Easy to use, simple 3 line structure.Note: Relay might be different from the picture as per stock
Built-in Flash: 32Mbit Power supply: 5V WiFi protocol: IEEE 802.11 b/g/n Peripheral interface: UART/GPIO/ADC/DAC/SDIO/PWM/I2C/I2S Logic level: 3.3V A high-quality USB cable is essential for this board to ensure sufficient current supply; otherwise, your board may not be recognized by the Windows Device Manager. Please avoid using mobile phone cables and...
Main chip: LM393, Electret condenser microphone Working voltage: DC 3.3-5V Induction distance is 0.5M Signal output Indication Single channel signal output The output effective signal is low level.
Ultra-compact dual-core RISC-V + 8051 SBC powered by CV1800B processor Runs Linux and RTOS for flexible embedded and AIoT development Integrated 0.5 TOPs TPU for AI vision and image recognition tasks Supports Ethernet, USB 2.0 Type-C, MIPI CSI camera, and MicroSD storage Up to 26 GPIO pins with I²C, SPI, UART, PWM, ADC, and JTAG interfaces Ideal for AIoT,...
High-sensitivity MQ-131 sensor for ozone (O₃) detection in air (10 PPB – 2 PPM range) Detects O₃, Cl₂, and NO₂ gases with fast response and high stability Provides dual signal output: analog and TTL-level digital output Signal LED indicator for easy testing and monitoring Plug-type probe design for convenient replacement and calibration Ideal for air...
High-sensitivity MQ-214 sensor for methane (CH₄) gas detection Detects CH₄, LPG, propane, iso-butane, and hydrogen (H₂) gases Provides analog voltage output proportional to gas concentration Features wide detection range and fast response time Durable, long-life design with low maintenance cost Ideal for gas leakage detection in residential and industrial...
Wide Input Range: Supports 6V–24V solar panels for flexible renewable setups Regulated 5V/3A Output: Provides stable power supply for embedded and IoT devices USB Type-C Input: Supports external adapter charging alongside solar input Battery Expansion Port: Compatible with optional battery holder for energy storage Built-in Protection: Offers...
Powered by ESP32 chip for faster, more stable smart control performance Supports eWeLink Remote for two-way and local device communication Magic Switch Mode allows control via app even when wall switch is off Handles up to 10A / 2400W load at 240V AC with CE, FCC, ETL certifications Built-in temperature sensor prevents overheating and ensures safe...
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Gravity: Analog capacitive soil moisture sensor with corrosion resistance
Wide operating voltage 3.3V–5.5V, compatible with Arduino & Raspberry Pi
Analog output 1.2–2.5V for easy integration with MCUs
Waterproof detection area for reliable indoor & outdoor use
Capacitive design ensures 2–3x longer lifespan than resistive sensors
Ideal for IoT projects, gardening, agriculture, and research labs
