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TDS (Protect power circuit ) Water Sensor (1 Meter Probe)
🌊 TDS Water Sensor Module – 1 m Waterproof Probe (Power Circuit Protected)
Overview
A reliable TDS (Total Dissolved Solids) sensor combo of a waterproof 1 m probe and signal board with built-in protection. It outputs both an analog voltage (reflecting dissolved solids in ppm) and optionally a digital threshold signal—ideal for water quality monitoring, hydroponics, smart irrigation, or any system where power protection is required.
Key Features
Wide supply voltage: 3.3–5.5 V DC
Analog output: 0–2.3 V, proportional to TDS (0–1000 ppm)
Waterproof probe (1 m cable); signal board must stay dry
Built-in power circuit protection
Low working current: ~3–6 mA
Measurement accuracy: ±10% full scale at 25 °C
Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 3.3–5.5 V DC |
| Probe Cable Length | ~1 meter |
| TDS Range | 0–1000 ppm |
| Analog Output Voltage | 0–2.3 V |
| Accuracy | ±10% F.S. (at 25 °C) |
| Board Size | ~42 × 32 mm |
| Probe Protection | IP waterproof (probe only) |
| Operating Temperature | Probe ≤ 55 °C; Connector board must be dry |
Wiring with Arduino Uno
| Module Pin | Connect To |
|---|---|
| VCC | 5 V (or 3.3 V) |
| GND | GND |
| AO | Analog input (e.g., A0) |
💡 Voltage output (0–2.3 V) for easy analog measurement with analogRead(). Use calibration formulas (see tutorial below) for accurate ppm conversion.
Applications
Drinking water quality checks
Aquarium, pool, and hydroponics monitoring
Environmental sensing and automation
Educational science kits
IoT systems with alerts for water purity thresholds
✅ Resources
🎥 YouTube Tutorial: https://youtu.be/ofZ7D8lVsXM?si=1bkdenLVVub4XS9b