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Reference: RBD-1354
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0351
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)...
Reference: 0245
Choose your desire Resistor value from below:
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0768
Size: 5mm Color: RED Head Shape: Round Lens Appearance: Transparent
Reference: RBD-0761
Breadboard friendly Mounting Style: Through Hole Mounting Direction: Vertical
Reference: 1353
Length: 12.5 inches/30 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
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The soil nutrient content can be easily measured using NPK Soil Sensor & Arduino. Measurement of soil content N (nitrogen), P (phosphorus), and K (potassium) is necessary to determine how much additional nutrient content is to be added to soil to increase crop fertility. The soil fertility is detected using NPK sensors.
A major component of soil fertilizer is nitrogen, phosphorus, and potassium. The knowledge of the soil nutrient concentration can help us to learn about nutritional deficiency or abundance in soils used to endorse plant production.
There are multiple methods of measuring the soil nutrient content using some optical sensors or using a spectrometer. But the spectral analysis method is not convenient and the drawback is the data are only 60-70% correct. While comparing the spectral analysis method with traditional wet chemistry methods, the accuracy of the products is yet to be fully resolved, given the paucity of data in that regard.
The Soil NPK sensor is a low-cost, quick responsive, high precision & portable Sensor that works with Modbus RS485. The advantage of this sensor over a traditional detection method is that it gives very fast measurement & data are highly accurate. All you need is to insert its probe into the soil and get the reading using Arduino. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
Note: Product images/ Components brand may vary from actual product as our stock rotates.
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This sensor does not require any chemical components, This sensor has Modbus communication port where we cannot connect it with microcontrollers directly but by using an intermediate Modbus module. We can connect it to most of the microcontrollers like Arduino, ESP32 and measure the Nitrogen, Phosphorus and Potassium values in Realtime, just by inserting the probes in the soil. This sensor also detects the type of the soils like Acidic soil, Alkaline soil. You need an external Modbus module such as RS485/MAX485 to connect the senor with microcontrollers.
0This sensor works with voltage range of 5v-30V with maximum power consumption less than 0.15watts. which works in the temperature range of 5-45 Celsius. Many microcontrollers such as Arduino, PIC microcontrollers, 8051 microcontrollers family, ESP etc. support this soil NPK sensor as they have baud rates of 2400,4800 and 9600. This soil NPK sensor is said to have a high precision measurements with an accuracy of ±2%, with measuring resolution of 1mg/Kg(mg/liter) and can measure the Nitrogen, phosphorus and Potassium in the range between 0 to 1999mg/kg(mg/liter).
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| General Specification | |
| DC power supply (default) | DC 5-30V |
| Maximum power consumption | ≤0.15W (@12V DC, 25℃) |
| Operating temperature | 0℃~55℃ |
| Nitrogen phosphorus potassium | range: 1-1999 mg/kg (mg/L); resolution rate: 1 mg / kg (mg / L), accuracy of: ± 2% FS |
| Response time | <1S |
| Protection | IP68 |
| Probe materials | stainless steel |
| Sealing material | black flame-retardant epoxy resin |
| Cable default length | 1 m |
| Dimensions | 45*15*123mm |
| Output signal | RS485 (Modbus protocol) |
| Shipment Weight | 0.140 kg |
| Shipment Dimensions | 15 × 11 × 5 cm |
Please allow 5% measuring deviation due to manual measurement.
You can find the source code and Interfacing Tutorial in the link below (Ask for permission with your ORDER ID)
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Getting 255 for all NPK values:
Getting no response from sensor data
Important Notes:
After analysis we found that this sensor is not completely accurate but works at an acceptable accuracy. Please try to find the sensor manufacturer datasheet to get the working enquiry frame data. Calibrating this sensor is still a dreamy hope for many users. This sensor is purely for soil only, measuring it in water gives foul results.
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1 x Soil NPK Sensor Agricultural RS485/Modbus
The latest price of Soil NPK Sensor Agricultural RS485/Modbus in Bangladesh is BDT 11,990 You can buy the Soil NPK Sensor Agricultural RS485/Modbus at best price from our RoboticsBD or visit RoboticsBD Office.
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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. |
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Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-0032
USB Driver: CH340 Operating Voltage (logic level): 5V With Mini USB 8 analog inputs ports: A0 ~ A7 14 Digital input / output ports: TX, RX, D2 ~ D13 1 pair of TTL level serial transceiver ports RX / TX Using Atmel Atmega328P-AU MCU There is a bootloader installed in it Standard 0.1” spacing DIP (breadboard friendly). Manual reset switch. Please select...
Reference: RBD-0094
The Arduino Uno R3 High-Quality Edition Arduino UNO in Bangladesh Micro-controller : ATmega328. Operating Voltage : 5V. Input Voltage (recommended) : 7-12V. Digital I/O Pins : 14 (of which 6 provide PWM output). Analog Input Pins : 6. The Arduino Uno R3 High-Quality Edition embodies superior craftsmanship and meticulous attention to detail, resulting in...
Reference: RBD-0145
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
Reference: RBD-0353
Driver IC: SSD1306 Support wide voltage: 3.3V-5V DC Communication: IIC Working temperature: -30-80 degrees. RoboticsBD
Reference: RBD-0560
On-board MAX485 chip, A low power consumption for the RS-485 communication, slew-rate limited transceiver. A low power consumption for the RS-485 communication Onboard then 5.08 (mm) pitch 2P terminal to facilitate RS-485 communication wiring. Slew-rate limited transceiver All pins of the chip have been lead to can be controlled through the...
Reference: RBD-1042
Operating Voltage: 3.3 ~ 5.5 VDC. Operating Current: 5mA. Interface: PH2.54-3P. Dimensions mm(LxWxH): 98 x 23 x 4. Supports 3-Pin Gravity Sensor interface Analog output. Weight (gm): 15.
Reference: RBD-1064
Size: 1.3 inch Resolution: 128 x 64 Controlling Chip: SSH1106 Driving Voltage: 3.3-5V Operating Temperature: -40~70 celsius Interface Type: IIC Light Color: Blue If you want to purchase White color 1.3 inch OLED display module click here
Reference: RBD-1671
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)
Reference: RBD-0674
Model: MQ-5 Operating Voltage: 5V DC Operating Temparature:-20~40 degree celcius
Reference: RBD-0687
Operating Voltage: 1.71V to 3.6V – would typically be operated from 3.3V. Operating Temperature: -40 to +85 deg. Celsius (full accuracy between 0 and +65 deg. C). Peak current: 1.12mA. RoboticsBD Operating Pressure: 300 hPa to 1100 hPa. Accuracy between 700 to 900hPa and 25 to 40 deg. C: ±0.12hPa and ±1.0m.
Reference: RBD-0812
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.
Reference: RBD-2381
HLK-TX510 is a module developed based on artificial intelligence chip TX510, AI computing power 1.2T@8bit/9.6T@binary, supports mixed precision, can quickly detect faces, supports 3D living detection, 3D face recognition, infrared living detection, Visible light live detection, etc., can resist two-dimensional attacks such as photos and videos, and...
Reference: RBD-2077
Operating Voltage:2.0v ~ 2.5v Current:10mA Diameter:3mm Wavelength:571nm + 644nm Beam Angle:150
Reference: RBD-2318
The Speaker module is composed of a power amplifier and a loudspeaker. Sound size can be adjusted by the potentiometer on the circuit board. Enter different frequencies, the speakers produce different tones. Can be carried out by for Arduino encoding and DIY their music box!Product data interfaceusing anti plug,the two sides of the interface are...
Reference: RBD-1022
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.
Reference: RBD-1856
Dual channel stereo, high output power (3 w + 3 w power @ 5V and 4 ohms load).. Double panel wiring solves crosstalk. Super mini design allows it to be easily placed in a variety of digital products. 3W Output at 10% THD with a 4ΩLoad and 5V Power Supply. Filterless, Low Quiescent Current and Low EMI and Low Noise. Short Circuit Protection and Thermal...
Reference: RBD-1860
Model KS-RG22 Coaxial reflection type Supply voltage DC10-30V±10%
Reference: RBD-0424
SI7021 SHT21 HTV21 Wide operating voltage (1.9 to 3.6 V) – 3.3 V Recommended Precision Relative Humidity Sensor ± 3% RH (max), 0–80% RH High Accuracy Temperature Sensor ±0.4 °C (max), –10 to 85 °C Interchangeable - No recalibration required. RoboticsBD I2C Interface
Reference: RBD-2507
Reference: RBD-0397
Support CAN V2.0B technical standard, communication rate 1Mb / S. Module 5V DC power supply, SPI interface protocol control 0 to 8 bytes long data field. 8MHZ crystal oscillator 120Ω terminal resistance Use High-speed CAN transceiver TJA1050 Impedance matching, guaranteed drive capability, long-distance data transmission, prevent signal radiation The...
Reference: RBD-0923
Measuring range: temperature -40-80 ℃; humidity 0; 99.9%RH Measurement accuracy (25℃): temperature: + 0.5; humidity: + 2%RH (10; 90%RH) Resolution: temperature: 0.1 ℃, humidity: 0.1%RH Attenuation value: temperature: <1℃ / year; humidity: < 1%RH/ years High precision Capacitive type Full range temperature compensated Relative humidity and...
Reference: RBD-1348
Easy to install. Automatic, convenient, safe and practical. It has the function of power and detection indication. The motion sensor can identify day and night automatically.
Reference: RBD-0419
Features: Built-in Red, IR, and Green LEDs 5V operation (3.3V is allowed, but green LED is not guaranteed to operate) Applications include presence detection, distance sensing (18" max), pulse oximetry, blood oxygen saturation level (SpO2), smoke and particle detection Documents: Schematic Eagle Files Hookup Guide Datasheet (MAX30105) MAX3010x Sensor...
Reference: RBD-0622
Transmission signal processing control chip RCWL-9196 Wide operating voltage range 4.0V to 28.0V Penetrating detection capability, compared with the traditional infrared feeling PIR Adjustable Block time and distance Operating Current: 2.8mA (typical); 3mA (max) Detection Distance: 5-9m Transmitting Power: 20mW (typical); 30mW (max) RoboticsBD
Reference: RBD-0142
Description: Fingerprint scanners are awesome. Why use a key when you have one right at the tip of your finger? Unfortunately, they’re usually unreliable or difficult to implement. Well not anymore! We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.
Reference: RBD-1951
High hardness, Corrosion protection. Waterproofness and High precision. The mode of its output signal：0-5V(Voltage signal). supply voltage: DC 12-24V. Power consumption：Voltage MAX≤0.3W. Start wind speed：0.4-0.8m/s.
Reference: RBD-1946
Comes with the BME280 sensor. Pressure accuracy of ±1 hPa. Temperature accuracy ±1.0°C. Altimeter accuracy ±1 meter. Humidity: +-3%
Reference: RBD-2446
This is the updated 2021 version of the HC-SR04 Ultrasonic Sensor, offering enhanced features and improved flexibility. Notably, the input voltage now ranges from 2.8V to 5.5V, providing compatibility with a wider range of microcontrollers, including both 3.3V and 5V systems. Mode 1: GPIO (General Purpose Input/Output) Mode 2: I2C (New Feature) Mode 3:...
Reference: RBD-0427
Working voltage: 3.3V-5V Output form: digital output (0 and 1)
Reference: RBD-1918
Speed(RPM):19000 Motor diameter: 6mm Shaft diameter: 0.8mm Shaft length: 4mm Rated voltage: 1.5V-4.5V
Reference: RBD-0319
Type K Type. Mounting thread: M6 Temperature Range:0-600°C. RoboticsBD
Reference: RBD-1934
Dual signal output (analog output and TTL level output) The TTL output effective signal is low. Analog output 0 ~ 5V voltage, the higher the concentration the higher the voltage. Good sensitivity to hydrogen sulfide, liquefied gas, natural gas, city gas, and smoke. with long service life and reliable stability fast response recovery characteristics
Reference: RBD-1847
Compact Design Country Specific pressure Multiple Displayable Unit Multi-colored, two-part display Alphanumeric display Discontinued by Manufactured 2017
Reference: RBD-1365
Central point temperature measurement high/low temperature auto tracking real-time temperature display Alarm buzzer: >37.2ºC: high temperature audible alarm
Reference: RBD-2235
Sound pressure level: 85DB 10cm The input voltage: 30vp-p max Operating Temperature: -20~70 Clear sound Ultra-thin and lightweight Low power consumption for voltage type
Reference: RBD-0559
Power supply: DC 7-30 V Input Voltage: 0-10V Output current: 4-20mA 0-5V to 4-20mA Linear Conversion
Reference: RBD-0315
Working voltage: DC 5 V Static current: 3 mA Working temperature: 0 ~ + 70° Output way: GPIO Induction Angle: Less than 15° Detection range:2 cm to 400 cm Detecting precision: 0.3 cm + 1% Sensor size: Approx. 45 x 20 x 1.6mm Hole diameter: Approx. 1mm. RoboticsBD
Reference: RBD-0523
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 ℃)
Reference: RBD-0560
On-board MAX485 chip, A low power consumption for the RS-485 communication, slew-rate limited transceiver. A low power consumption for the RS-485 communication Onboard then 5.08 (mm) pitch 2P terminal to facilitate RS-485 communication wiring. Slew-rate limited transceiver All pins of the chip have been lead to can be controlled through the...
Reference: RBD-0523
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 ℃)
Reference: RBD-1042
Operating Voltage: 3.3 ~ 5.5 VDC. Operating Current: 5mA. Interface: PH2.54-3P. Dimensions mm(LxWxH): 98 x 23 x 4. Supports 3-Pin Gravity Sensor interface Analog output. Weight (gm): 15.
Reference: RBD-0414
A probe by new original installation import DS18B20 temperature sensor chip. RoboticsBD Chip each pin use heat shrinkable tube to prevent short circuit, internal sealing glue, waterproof, moistureproof. Stainless steel tube encapsulation waterproof moistureproof prevent rust. Stainless steel shell (6 * 45 mm), lead length 100 cm (shielding wire) use...
Reference: RBD-2155
Connector: Pin Header Connector type: Pin Strips female Number of pins: 40 Pin Length: 12mm Pitch: 2.54mm To buy Arduino Stackable Header Kit (8 pin) click here To buy Arduino Stackable Header Kit (6 pin) click here
Reference: RBD-0917
ROHS approved Mini Solar panel The solar cells are encased and protected by a durable outer poly frame Polycrystalline silicon Max work voltage:5V Max work current: 80ma Dimension: 60mm×60mmx3mm
Reference: RBD-0916
ROHS approved Mini Solar panel The solar cells are encased and protected by a durable outer poly frame Polycrystalline silicon Max work voltage:5V Max work current: 200ma Dimension: 90mm×90mmx3mm RoboticsBD
Reference: RBD-0823
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)
