• How to Place an Order

  • Store Pick Up

  • Request for Quotation/ International Sourcing

  • Order Status

Jumper Wire Single 20cm Robotics Bangladesh
Quick view

Reference: RBD-1354

Jumper Wire Single 20cm

Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.

Price BDT 3
More
In-Stock
MIFARE Classic 1K RFID NFC Smart Card 13.
Quick view

Reference: RBD-0351

MIFARE Classic 1K RFID NFC Smart Card 13.56MHz Printable

Contactless transmission of data and supply energy (no battery needed) Operating distance: Up to 100mm (depending on antenna geometry) RoboticsBD Operating frequency: 13.56MHz Data transfer: 106 kbit/s Data integrity: 16 Bit CRC, parity, bit coding bit counting Anticollision Typical ticketing transaction: <100 ms ( including backup management)...

Price BDT 32
More
In-Stock
Heat Shrink Tube Robotics Bangladesh
Quick view

Reference: 0984

Heat Shrink Tube

Choose your desire Heat Sink Size from below: 

Price BDT 2
More
In-Stock
Kiloohm (KΩ) 1/4w Resistors - Pack of 5 Robotics Bangladesh
Quick view

Reference: 0245

Kiloohm (KΩ) 1/4w Resistors - Pack of 5

Choose your desire Resistor value from below: 

Price BDT 5
More
In-Stock
Ohm (Ω) 1/4w Resistors - Pack of 5 Robotics Bangladesh
Quick view

Reference: 0766

Ohm (Ω) 1/4w Resistors - Pack of 5

Choose your desire Resistor value from below: 

Price BDT 5
More
In-Stock
Jumper Wire 40 Pcs Set 20cm Robotics Bangladesh
Quick view

Reference: 0031

Jumper Wire 40 Pcs Set 20cm

3 Types Available (Please select from option) 1. Male to Male  2. Male to Female 3. Female-Female

Price BDT 100
More
In-Stock
5 mm Red LED (Pack of 5) Robotics Bangladesh
Quick view

Reference: RBD-0768

5 mm Red LED (Pack of 5)

Size: 5mm Color: RED Head Shape: Round Lens Appearance: Transparent

Price BDT 5
More
In-Stock
Push Button Switch (2PIN) Robotics Bangladesh
Quick view

Reference: RBD-0761

Push Button Switch (2PIN)

Breadboard friendly Mounting Style: Through Hole Mounting Direction: Vertical

Price BDT 5
More
In-Stock
BC547 NPN Transistor Robotics Bangladesh
Quick view

Reference: RBD-0758

BC547 NPN Transistor

BC547 NPN DIP Transistor

Price BDT 4
More
In-Stock
1N4007 Diode Robotics Bangladesh
Quick view

Reference: RBD-1360

1N4007 Diode

PN junction rectifier diode. One direction flow of Current. Used for conversion of AC power to DC. 1N 4007 is electrically compatible with other rectifier diodes  Used instead of any of the diode belonging to 1N400X series

Price BDT 4
More
In-Stock
All best sellers
  • New
Gravity Analog TDS Sensor/ Meter for Arduino Robotics Bangladesh
  • Gravity Analog TDS Sensor/ Meter for Arduino Robotics Bangladesh

Gravity Analog TDS Sensor/ Meter for Arduino

RBD-3238
DFRobot

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 series. 

BDT 2,280
Quantity
In Stock

1 person added this item to the cart in last 10 days
Only 2 items left in stock
  • Store Pickup Available! Store Pickup Available!
  • Free Ship Over 5000 BDT Free Ship Over 5000 BDT
  • Quality Product Quality Product
  • No Warranty No Warranty
  • No Replacement No Replacement

Introduction

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 series. 

TDS (Total Dissolved Solids) indicates that how many milligrams of soluble solids dissolved in one liter of water. In general, the higher the TDS value, the more soluble solids dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one of the references for reflecting the cleanliness of water.
SEN0244-001.jpg
(Cited from Google)

TDS pen is widely used equipment to measure TDS value. The price is affordable, and it is easy to use, but it is not able to transmit data to the control system for online monitoring to do some water quality analysis. The professional instrument has high accuracy and can send data to the control system, but the price is expensive for ordinary people. To this end, we have launched an analog TDS sensor kit that is compatible with Arduino, plug, and play, easy to use. Matching with Arduino controller, you can build a TDS detector easily to measure the TDS value of liquid.
This tds sensor supports 3.3 ~ 5.5V wide voltage input, and 0 ~ 2.3V analog voltage output, which makes it compatible with a 5V or 3.3V control system or board. The excitation source is an AC signal, which can effectively prevent the probe from polarization and prolong the life of the probe, meanwhile, increase the stability of the output signal. The TDS probe is waterproof, it can be immersed in water for a long time measurement.
SEN0244-003.jpg
This tds meter can be used in water quality application, such as domestic water, hydroponics. With this product, you can easily DIY a TDS detector to reflect the cleanliness of water to protect your health.
If you want to make a simple water purifier, we recommend buying together with Gravity: Waterproof DS18B20 Sensor Kit

Attention:
1.The probe can not be used in water above 55 degrees centigrade.
2.The probe can not be left too close to the edge of the container, otherwise, it will affect the reading.
3.The head and the cable of the probe are waterproof, but the connector and the signal transmitter board are not waterproof. Please be careful.

Features

  • Wide Voltage Input: 3.3~5.5V
  • Good Compatibility Output: 0~2.3V analog signal output, compatible with 5V or 3.3V controller
  • AC Excitation Source: effectively prevent the probe from polarization
  • Waterproof Probe
  • Easy to Use: Arduino compatible, simple connection, plug, and play without soldering

Specification

Signal Transmitter Board
  • Input Voltage: 3.3 ~ 5.5V
  • Output Voltage: 0 ~ 2.3V
  • Working Current: 3 ~ 6mA
  • TDS Measurement Range: 0 ~ 1000ppm
  • TDS Measurement Accuracy: ± 10% F.S. (25 ℃)
  • Module Size: 42 * 32mm
  • Module Interface: PH2.0-3P
  • Electrode Interface: XH2.54-2P

TDS probe
  • Number of Needles: 2
  • Total Length: 83cm
  • Connection Interface: XH2.54-2P
  • Color: Black
  • Other: Waterproof Probe

Projects

Project 1. Arduino Hydroponics, DIY Hydroponics System using pH Sensor& EC Sensor, Hydroponic

Project 2. TDS Sensor & Arduino Interfacing for Water Quality Monitoring

Introduction: This project will interface Gravity Analog TDS Sensor with Arduino Microcontroller and read the value in 16×2 LCD Display.

Project 3. TDS Sensor and ESP32 IoT based Water Quality Monitoring system, IoT TDS sensor, ESP32 TDS Sensor

Introduction: This project show you how to make IoT based Water Quality Monitoring System using TDS Sensor, DS18B20 water proof one wire digital temperature sensor, and ESP32 Wifi + Bluetooth Module.

Project 4. Make a TDS Detector for Water Testing Experiment

Introduction:

This project introduces to DIY a TDS meter with my analog TDS sensor, and use the meter to detect the TDS of tap water before and after filtration. Moreover, I can use it to do some interesting experiments. Let's have a go.

Project 5. DFROBOT TDS Meter Sensor With Arduino & LCD || Measure Water Quality in PPM

Introduction: This project will interface Gravity Analog TDS Sensor with Arduino Microcontroller and read the value in a 16x2 LCD Display.

Documents

Shipping List

  • Analog TDS Meter for Arduino x1
  • Waterproof TDS Probe x1
  • 3Pin Analog Sensor Cable x1

What is the price of Gravity Analog TDS Sensor/ Meter for Arduino in Bangladesh?

The latest price of Gravity Analog TDS Sensor/ Meter for Arduino in Bangladesh is BDT 2,280 You can buy the Gravity Analog TDS Sensor/ Meter for Arduino at best price from our RoboticsBD or visit RoboticsBD Office.

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product.

Product Images are shown for illustrative purposes only and may differ from the actual product.

Product Details
RBD-3238
2 Items
30 other products in the same category:
PH Meter Digital Tester Aquarium Pool Water Urine Wine LCD Pen Monitor Protable Robotics Bangladesh
Quick view

Reference: RBD-0575

PH Meter Digital Tester Aquarium Pool Water Urine Wine LCD Pen Monitor Protable

Main color: Yellow Measure range: 0.00-14.00pH Resolution: 0.01pH Accuracy: ±0.05pH Calibration: two points automatic calibration

Price BDT 790
More
In-Stock
New Gravity: Analog Capacitive Corrosion Resistant Soil Moisture Sensor Robotics Bangladesh
Quick view

Reference: RBD-3092

Brand: DFRobot

Gravity: Analog Capacitive Corrosion Resistant Soil Moisture Sensor

Gravity: Capacitive Soil Moisture Sensor is ideal for environmental science courses and indoor gardening applications. Operating within a voltage range of 3.3 to 5.5V, this sensor provides an analog output of 1.2 to 2.5V, making it compatible with low-voltage MCUs, including both 3.3V and 5V logic systems, allowing for easy integration with popular...

Price BDT 1,050
More
In Stock
Anti-Corrosion Water Level Sensor with Ball Float Switch Robotics Bangladesh
Quick view

Reference: RBD-2141

Anti-Corrosion Water Level Sensor with Ball Float Switch

Rating contract (Max.): 10 W Switching power supply (Max.): 110VDC Resistance contract (Max.): 100 Ω Appro. Float Ball Size (mm) : 24×17 (LxD) Body Total Length (mm) : 85 Cable Length (cm) : 37 Total Float opening: 70° Switch ON/OFF angle Approx. betn 15° to 20°

Price BDT 350
More
In-Stock
Water Level Sensor Depth of Detection Water Sensor for Arduino Robotics Bangladesh
Quick view

Reference: RBD-0683

Water Level Sensor Depth of Detection Water Sensor for Arduino

Operating voltage: DC3-5V Operating current: less than 20mA Sensor Type: Analog Detection Area: 40mmx16mm Operating temperature: 10℃-30℃ Humidity: 10% -90% non-condensing

Price BDT 49
More
In-Stock
Water Level Sensor Gold Coating Robotics Bangladesh
Quick view

Reference: RBD-1935

Water Level Sensor Gold Coating

Water-level sensor indicates the level of water in an overhead tank Gold coated Long life time Simple working procedure

Price BDT 350
More
In Stock
Gravity Analog Dissolved Oxygen Sensor / Meter Kit for Arduino Robotics Bangladesh
Quick view

Reference: RBD-2325

Brand: DFRobot

Gravity Analog Dissolved Oxygen Sensor / Meter Kit for Arduino

Gravity Analog Dissolved Oxygen Sensor Kit for Arduino-compatible projects Measures dissolved oxygen in water to assess water quality in aquaculture, environmental monitoring, and natural science Galvanic probe design with no polarization time required and low maintenance costs Signal converter board with 3.3-5.5V compatibility for Arduino, ESP32,...

Price BDT 25,250
More
In-Stock
Envitec OOM202 Medical Ventilator Oxygen Sensor Robotics Bangladesh
Quick view

Reference: RBD-1719

Envitec OOM202 Medical Ventilator Oxygen Sensor

Envitec Honeywell OOM202 Medical Ventilator Oxygen Sensor Made in GermanyManufacture Date: 2023 December

Price BDT 11,500
More
Out of Stock
Gravity Analog Electrical Conductivity Sensor V2 K1 Robotics Bangladesh
Quick view

Reference: RBD-2493

Gravity Analog Electrical Conductivity Sensor V2 K1

Brand: DFRobot Product: Gravity Lab Grade Analog Electrical Conductivity Sensor Supply Voltage: 3.0~5.0V Output Voltage: 0~3.4V Support Detection Range: 0~20ms/cm

Price BDT 15,582
More
Out of Stock
Square 6M Float Switch - Industry Pump Tank Sensor Imported Robotics Bangladesh
Quick view

Reference: RBD-2974

Square 6M Float Switch - Industry Pump Tank Sensor Imported

Automatic On/Off control for pumps, motors, and valves. Rated for 250V at 10(8A) and 380V at 10(4A). 6-meter wire length with IP68 protection. Suitable for non-flammable liquids; not explosion-proof. High buoyancy and hermetically sealed for reliable operation.

Price BDT 1,785
More
In-Stock
Square 10M Float Switch - Industry Pump Tank Sensor Imported Robotics Bangladesh
Quick view

Reference: RBD-2972

Square 10M Float Switch - Industry Pump Tank Sensor Imported

Automatic On/Off control for pumps, motors, and valves. Rated for 250V at 10(8A) and 380V at 10(4A). 10-meter wire length with IP68 protection. Suitable for non-flammable liquids; not explosion-proof. High buoyancy and hermetically sealed for reliable operation.

Price BDT 2,550
More
In-Stock
52mm PP Liquid Water Level Sensor Horizontal Float Switch Down Robotics Bangladesh
Quick view

Reference: RBD-1677

52mm PP Liquid Water Level Sensor Horizontal Float Switch Down

Contact Rating: 10 W. Switching Voltage: 220 V. Switching Current: 0.5 A. Breakdown Voltage: 220 VDC. Carry Current: 1 A. Contact Resistance: 100 mΩ.

Price BDT 299
More
In-Stock
pH Sensor Analog Meter Kit For Arduino Robotics Bangladesh
Quick view

Reference: RBD-0523

pH Sensor Analog Meter Kit For Arduino

Module Power: 5.00V Module Size : 43 x 32mm(1.69×1.26″) Measuring Range :0 – 14PH Measuring Temperature: 0 – 60 ℃ Accuracy : ± 0.1pH (25 ℃)

Price BDT 3,299
More
In-Stock
Soil NPK Sensor Agricultural RS485/Modbus Robotics Bangladesh
Quick view

Reference: RBD-1931

Soil NPK Sensor Agricultural RS485/Modbus

Easy to Measure High Precision Low measurement cost Resolution up to 1mg/kg (mg/l)

Price BDT 11,990
More
In-Stock
- BDT 4,107 Reduced price Gravity Analog ORP Sensor Meter for Arduino Robotics Bangladesh
Quick view

Reference: RBD-2324

Brand: DFRobot

Gravity Analog ORP Sensor Meter for Arduino

Gravity Analog ORP Sensor Meter for Arduino with a compact and easy-to-use design Measures Oxidation-Reduction Potential (ORP) in aqueous solutions within -2000mV to 2000mV range Features simple wiring and programming for seamless integration with Arduino Provides reliable water quality measurements for testing, aquaculture, and hydroponics Includes ORP...

Price BDT 16,749 Regular price BDT 20,856
More
In-Stock
New IP68 Underwater Ultrasonic Obstacle Avoidance Sensor (3m, UART) Robotics Bangladesh
Quick view

Reference: RBD-3096

Brand: DFRobot

IP68 Underwater Ultrasonic Obstacle Avoidance Sensor (3m, UART)

This is an underwater ultrasonic obstacle avoidance sensor specifically designed for underwater applications. It operates on a wide voltage range of 5-24V and features compact size, minimal blind spots, high precision, and high protection. Its underwater measurement range is from 2-300cm.

Price BDT 6,950
More
In Stock
Digital TDS Meter Monitor TEMP PPM Tester Robotics Bangladesh
Quick view

Reference: RBD-1168

Digital TDS Meter Monitor TEMP PPM Tester

Item Name: TDS meter Meter Material: Plastic Display: LCD Digital Accuracy: +/- 2% Range: 0-9990 ppm

Price BDT 850
More
In-Stock
Air Quality Breakout - CCS811 Robotics Bangladesh
Quick view

Reference: RBD-0958

Air Quality Breakout - CCS811

Five Operating Modes Integrated MCU Onboard Processing Standard I2C Digital Interface Optimized Low-Power Modes Optional NTC Thermistor Pins

Price BDT 2,099
More
In-Stock
Mini Metal Detector Module Robotics Bangladesh
Quick view

Reference: RBD-1066

Mini Metal Detector Module

Operating voltage: 5V DC. Detector distance: 1CM. Adjust the potentiometer, let the modules work normally. Small and easy to use module. It comes with a Buzzer for metal detection indication.The Mini Metal Detector Module arrives disassembled, requiring assembly using a soldering iron and soldering accessories. Moderate knowledge of soldering and...

Price BDT 340
More
In-Stock
Soil Moisture Hygrometer Detection Humidity Sensor Module Corrosion Resistance Probe Robotics Bangladesh
Quick view

Reference: RBD-2211

Soil Moisture Hygrometer Detection Humidity Sensor Module Corrosion Resistance Probe

Soil moisture sensor module Digital and analog output Adjustable threshold Waterproof and corrosion-resistant probe

Price BDT 570
More
In-Stock
High Accuracy I2C MAX30105 Particle Optical Sensor Photodetectors Oximeter Module Robotics Bangladesh
Quick view

Reference: RBD-0812

High Accuracy I2C MAX30105 Particle Optical Sensor Photodetectors Oximeter Module

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.

Price BDT 4,300
More
In-Stock
New Gravity: Photoelectric High Accuracy Liquid Level Sensor Robotics Bangladesh
Quick view

Reference: RBD-3093

Brand: DFRobot

Gravity: Photoelectric High Accuracy Liquid Level Sensor

This is a photoelectric water liquid level sensor that is operates using optical principles. The advantages of this photoelectric water liquid level sensor are good sensitivity and no need for mechanical parts - meaning less calibration! The corrosion resistant probe is easily mounted and can handle high temperature and high pressure.

Price BDT 1,350
More
In Stock
Soil Sensor RS485 5 Pin PH NPK Storage Temperature And Humidity EC Sensor Conductivity Tester Multi Parameter Robotics
Quick view

Reference: RBD-2300

Soil Sensor RS485 5 Pin PH NPK Storage Temperature And Humidity EC Sensor Conductivity Tester Multi Parameter

Multi-parameter Soil Sensor for measuring pH, NPK, moisture, temperature, and conductivity Wide input voltage range (4.5-30V) with RS485 Modbus protocol for seamless integration High precision, corrosion-resistant, IP68-rated design for long-term soil and water monitoring Built-in temperature compensation for accurate conductivity measurements Ideal for...

Price BDT 15,280
More
In-Stock
Gravity: Analog Turbidity Sensor for Arduino Robotics Bangladesh
Quick view

Reference: RBD-2998

Brand: DFRobot

Gravity: Analog Turbidity Sensor for Arduino

The Arduino turbidity sensor detects water quality by measuring the level of turbidity. It is able to detect suspended particles in water by measuring the light transmittance and scattering rate which changes with the amount of total suspended solids (TSS) in water. As the TTS increases, the liquid turbidity level increases. You may also check Liquid...

Price BDT 1,510
More
In Stock
Liquid Suspended Particles Turbidity Sensor Detection Module Kit Robotics Bangladesh
Quick view

Reference: RBD-0813

Liquid Suspended Particles Turbidity Sensor Detection Module Kit

Operating Voltage: 5VDC. Current: 30mA (MAX). Operating temperature: -30 ° C to 80 ° C. Compatible with Arduino, Raspberry Pi, AVR, PIC, etc. Measuring Range: 0 ~ 1000 NTU.

Price BDT 820
More
In-Stock
Soil NPK Sensor Agricultural Robotics Bangladesh
Quick view

Reference: RBD-1833

Soil NPK Sensor Agricultural

NEW TYPE AVAILABLE CLICK HERE Measurement range: 0-199 mg/KG Measurement accuracy: +-2%F.s Resolution: 1mg/KG (mg/L) Response time (T90, s): less than 10 Communication port: RS485 Power supply: 5V-24v DC 

Price BDT 11,990
More
Out of Stock
TDS Meter V1.0 Module Water Quality Sensor for Arduino Robotics Bangladesh
Quick view

Reference: RBD-1717

TDS Meter V1.0 Module Water Quality Sensor for Arduino

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

Price BDT 1,830
More
In-Stock
Liquid Level Sensor for Arduino (WaveShare) Robotics Bangladesh
Quick view

Reference: RBD-0337

Brand: Waveshare

Liquid Level Sensor for Arduino (WaveShare)

Detection depth: 48mm Power: 2.0V ~ 5.0V Dimension: 19.0mm * 63.0mm Mounting holes size: 2.0mm

Price BDT 499
More
In-Stock
YL-69 Soil Hygrometer Humidity & Soil Moisture Detection Sensor Robotics Bangladesh
Quick view

Reference: RBD-0145

YL-69 Soil Hygrometer Humidity & Soil Moisture Detection Sensor

Dual output mode, analog output more accurate A fixed bolt hole for easy installation With power indicator (red) and digital switching output indicator (green) Having LM393 comparator chip, stable. Operating Voltage: 3.3V~5V

Price BDT 120
More
In-Stock
pH Sensor Gravity Analog pH Sensor Meter Kit V2 Robotics Bangladesh
Quick view

Reference: RBD-1969

Brand: DFRobot

pH Sensor Gravity Analog pH Sensor Meter Kit V2

Specifically designed to measure the pH of the solution and reflect the acidity or alkalinity. Improved precision and user experience. Compatible with 5V and 3.3V. Quickly build the pH meter, plug and play, no welding.

Price BDT 9,200
More
In-Stock
Square 2M Float Switch - Industry Pump Tank Sensor Imported Robotics Bangladesh
Quick view

Reference: RBD-2975

Square 2M Float Switch - Industry Pump Tank Sensor Imported

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.

Price BDT 1,065
More
In-Stock