TDS Sensor Meter Board Module V1.0 | Pro Tronix

Product Description

An analog Total Dissolved Solids (TDS) sensor meter kit with a dedicated conditioning circuit board, ideal for water quality testing and liquid purity analysis in Arduino and ESP32 projects. This V1.0 module accurately measures the conductivity of mobile ions in a liquid solution, reflecting the total amount of dissolved organic and inorganic substances such as salts, minerals, and heavy metals. It features a waterproof probe with dual platinum-plated or high-conductivity pins that resist polarization and electrochemical corrosion during measurement cycles. Communicating via a simple 0V to 2.3V analog output voltage range, the module includes wide voltage input compatibility and convenient mounting holes, providing an easy-to-use liquid analysis tool for water purifiers, hydroponic farms, and environmental monitoring systems.

Pinout / Layout Connections

The module breaks out its tracking and power interface through two distinct connector groups:

Waterproof Probe Terminal (2-Pin XH2.54 Connector):

• Probe Inputs: Plugs directly into the matching black 2-pin onboard terminal socket (non-polarized).

Control Board Interface (3-Pin Male Header):

• VCC Pin: Power supply input, accepts DC +3.3V to +5.5V.

• GND Pin: Common system ground (0V) reference.

• AOUT Pin: Analog output signal line. Outputs a linear voltage (0V to ~2.3V) proportional to the TDS value of the solution being tested.

Applications

• Hydroponics & Aquaponics: Perfect for tracking vital nutrient solution concentrations and keeping mineral levels within safe growing thresholds.

• Water Purifier Monitoring: Excellent for auditing domestic reverse osmosis (RO) filters, checking real-time filter degradation, and validating drinking water purity.

• Aquarium Water Purity: Ideal for ensuring optimal water hardness and stable ecological conditions for sensitive fish species.

Compatibility

The TDS Sensor Module V1.0 outputs a low-voltage analog signal, making it highly compatible with:

• Arduino Board Series (Uno, Nano, Mega) using standard 5V analog input pins.

• ESP32 and ESP8266 development boards (Fully compatible with 3.3V ADC inputs; output stays within safe thresholds).

• Raspberry Pi and Raspberry Pi Pico (Pairs seamlessly via an external I2C analog-to-digital converter like the ADS1115).

• Standard 3.3V and 5V Microcontrollers.

Technical Specifications

What’s in the Box

• 1 x TDS Meter Signal Conditioning Board V1.0.

• 1 x Waterproof Detachable TDS Sensor Probe with 60cm cable.

• 1 x 3-Pin Analog Interface Jumper Wire.

Available now from Pro Tronix with guaranteed quality and fast delivery nationwide.