Description

(YY) 1/2/3Pcs TDS Sensor Module For Arduino 51/STM32 With DS18B20 Temperature

Measure the total dissolved solids (TDS) in water with precision and ease using the (YY) TDS Sensor Module. Designed for hobbyists, makers, and professionals, this compact analog sensor delivers reliable real‑time data for Arduino, ESP‑8266, STM32, and other 5V/3.3V micro‑controller platforms. Pair it with the included DS18B20 temperature probe for temperature‑compensated readings, ensuring accurate water quality monitoring in hydroponics, aquaculture, brewing, and DIY water‑testing projects.

Key Highlights

• High‑precision analog output (0‑5V) for direct connection to ADC pins.
• Integrated DS18B20 temperature sensor for temperature‑compensated TDS values.
• Compatible with Arduino, ESP‑8266/ESP‑32, STM32, Raspberry Pi Pico, and other 5V/3.3V boards.
• Easy‑plug‑and‑play design with 4‑pin header (VCC, GND, Analog, Digital).
• Wide measurement range: 0 – 2000 ppm (parts per million) TDS.
• Robust waterproof probe (Φ5 mm) suitable for continuous immersion.
• Low power consumption – ideal for battery‑powered projects.

Why Choose This TDS Sensor?

Accurate water‑quality monitoring is essential for healthy plants, safe drinking water, and consistent product quality. The (YY) TDS sensor combines a reliable dissolved‑solids probe with a built‑in temperature sensor, eliminating the need for separate components and simplifying your circuit design. Its analog output provides smooth, real‑time data that can be logged, displayed, or used to trigger automated actions such as water filtration or nutrient dosing.

Compatibility & Integration

• Arduino: Uno, Mega, Nano, Leonardo, Pro Mini
• ESP Series: ESP‑8266, ESP‑32, ESP‑01
• STM32: F1, F4, F7 families (5V or 3.3V mode)
• Raspberry Pi Pico & RP2040 boards
• Other 5V/3.3V microcontrollers with ADC capability

How It Works

The sensor’s probe measures the electrical conductivity of the water, which correlates directly to the concentration of dissolved ions. The onboard circuit converts this conductivity into an analog voltage. Simultaneously, the DS18B20 thermometer measures water temperature, allowing software to apply temperature compensation for more accurate TDS readings. The result is a single, stable voltage that can be read by any analog‑to‑digital converter.

Typical Applications

• Hydroponic nutrient monitoring
• Aquarium and fish‑farm water quality control
• Home brewing and winemaking
• DIY water filtration systems
• Environmental research and field testing
• Educational labs and STEM projects

Package Contents

• 1 × TDS sensor module (or 2/3 pcs depending on selection)
• 1 × DS18B20 waterproof temperature probe
• 4‑pin male header for easy solder‑free connection
• Quick‑start guide with wiring diagram and sample code

Technical Specifications

• Operating voltage: 3.3 V / 5 V
• Analog output: 0 – 5 V (linear)
• Measurement range: 0 – 2000 ppm TDS
• Temperature range: –55 °C to +125 °C (DS18B20)
• Probe material: Stainless steel (food‑grade)
• Response time: ≤ 2 seconds
• Power consumption: < 10 mA (typical)

Get Started Today

Upgrade your water‑monitoring projects with the (YY) TDS Sensor Module and DS18B20 temperature probe. Accurate, affordable, and ready to integrate—perfect for anyone who wants reliable water‑quality data at their fingertips.