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🌱 TerraSoil Library - Complete Documentation

TerraSoil Logo

Version Arduino License Platform

Arduino Library for NPK Soil Sensor 10-in-1 RS485

Revolutionize your agriculture with artificial intelligence and data precision

Developed by Kennedy KITOKO MUYUNGA
Date: January 25, 2025

Installation • Quick Start • Documentation • Examples

👨‍💻 Developer Information

Kennedy KITOKO MUYUNGA

Student & IoT Developer

📍 Beijing Institute of Technology (BIT)
🎓 Bachelor of Mechanical & Electrical Engineering (3rd Year)
📅 Born: July 24, 2003
🆔 Student ID: **********

📞 Contact Information

Platform ID/Contact
📱 Phone +86 **********
💬 WeChat Kennedy-kitoko
🐦 Twitter @kennedykitoko13
📧 Email kennedy.kitoko@bit.edu.cn

👨‍🏫 Project Supervisor

Prof. Zhang Xiangfu (张乡夫)

  • Title: Laboratory Instructor (实验师)
  • Affiliation: School of Integrated Circuits and Electronics
  • Institution: Beijing Institute of Technology (北京理工大学)
  • Position: Experimental Teacher (实验教师)

📖 Table of Contents

  1. Introduction to Smart Agriculture
  2. The SN-300 Sensor 10-in-1
  3. TerraSoil Library
  4. Installation
  5. Quick Start
  6. Wiring Diagram
  7. Technical Documentation
  8. Practical Examples
  9. Smart Agriculture Applications
  10. Professional Applications
  11. Library Development
  12. FAQ

🌍 Introduction to Smart Agriculture

Why TerraSoil?

Modern agriculture faces major challenges:

  • 🌊 Water Scarcity: Need for optimized irrigation
  • 🌱 Fertilizer Overload: Pollution and high costs
  • 📉 Variable Yields: Lack of precise data
  • 🌡️ Climate Change: Unpredictable conditions
  • 💰 Rising Costs: Need for efficiency

The Solution: Precision Agriculture

TerraSoil enables data-driven agriculture by measuring in real-time:

Parameter Impact on Crops Automated Decision
Moisture Water needs Targeted irrigation
NPK Nutrition Precise fertilization
pH Nutrient absorption Soil correction
EC Salinity Water management
Temperature Growth Planting timing

Result: 30% water savings, 40% fertilizer reduction, 25% yield increase

🔬 The SN-300 10-in-1 Sensor

Complete Technical Specifications

Sensor Reference: SN-300-TR-*-N01*

The SN-300 is a professional multi-parameter sensor developed by Shandong Sain Electronic Technology Co., Ltd. It's the first agricultural sensor integrating 10 simultaneous measurements in a single waterproof housing.

📊 The 10 Measured Parameters

1. 💧 Soil Moisture

  • Range: 0-100%
  • Resolution: 0.1%
  • Accuracy: ±2% (0-50%), ±3% (50-100%)
  • Technology: FDR (Frequency Domain Reflectometry) dielectric measurement
  • Application: Irrigation management, drought detection

Why it matters: Soil moisture is the most critical parameter for plant growth. Precise measurement allows watering only when necessary, saving up to 40% water.

2. 🌡️ Soil Temperature

  • Range: -40°C to +80°C
  • Resolution: 0.1°C
  • Accuracy: ±0.5°C at 25°C
  • Technology: High-precision NTC thermistor sensor
  • Application: Planting timing determination, germination prediction

Why it matters: Soil temperature directly affects seed germination and microbial activity. Each crop has an optimal growth temperature.

3. ⚡ Electrical Conductivity (EC)

  • Range: 0-20000 µS/cm
  • Resolution: 1 µS/cm
  • Accuracy: ±3% (0-10000), ±5% (10000-20000)
  • Technology: Special treated alloy electrodes
  • Compensation: Automatic temperature (0-50°C)
  • Application: Salinity measurement, nutrient concentration

Why it matters: EC indicates the total amount of dissolved salts in soil. Too high = toxicity, too low = nutritional deficiency.

4. 🧪 Soil pH

  • Range: 3-9 pH
  • Resolution: 0.1 pH
  • Accuracy: ±0.2 pH
  • Technology: Special anti-corrosion glass electrode
  • Application: Nutrient absorption optimization

Why it matters: pH controls nutrient availability. Inadequate pH makes nutrients inaccessible even if present in soil.

pH Condition Impact
< 5.5 Too acidic Aluminum toxicity, phosphorus deficiency
6.0-7.0 Optimal Nutrients available
> 7.5 Too alkaline Iron, manganese deficiency

5-7. 🌾 NPK (Nitrogen, Phosphorus, Potassium)

🔴 Nitrogen (N)
  • Range: 0-2999 mg/kg
  • Resolution: 1 mg/kg
  • Role: Vegetative growth, chlorophyll production
  • Deficiency: Leaf yellowing, stunted growth
  • Excess: Excessive growth, disease susceptibility
🟠 Phosphorus (P)
  • Range: 0-2999 mg/kg
  • Resolution: 1 mg/kg
  • Role: Root development, flowering, fruiting
  • Deficiency: Weak roots, delayed flowering
  • Excess: Iron and zinc blockage
🟡 Potassium (K)
  • Range: 0-2999 mg/kg
  • Resolution: 1 mg/kg
  • Role: Disease resistance, fruit quality
  • Deficiency: Burned leaf edges, poor fruit quality
  • Excess: Magnesium and calcium blockage

⚠️ Important Note on NPK: The SN-300 sensor's NPK values are reference values that must be calibrated with an initial laboratory test. The sensor stores these values and tracks their evolution over time.

8. 🧂 Salinity

  • Range: 0-20000 (index)
  • Calculation: Derived from EC with adjustable coefficient
  • Application: Soil salinization detection
  • Critical thresholds:
    • 0-800: Non-saline
    • 800-2000: Slightly saline
    • 2000-4000: Moderately saline

    • 4000: Highly saline (problematic)

Why it matters: Excessive salinity prevents water absorption by roots (osmotic stress) and can kill crops.

9. 💎 TDS (Total Dissolved Solids)

  • Range: 0-10000 mg/L
  • Resolution: 1 mg/L
  • Calculation: TDS = EC × 0.5 (adjustable coefficient)
  • Application: Irrigation water quality, nutrient concentration

Why it matters: TDS indicates total concentration of dissolved matter. Useful for fertigation (fertilization via irrigation).

10. 🌾 Soil Fertility

  • Range: 0-3000 mg/kg
  • Resolution: 1 mg/kg
  • Calculation: Combination of EC, pH, NPK with proprietary algorithm
  • Application: Overall soil health indicator

Why it matters: Fertility is a synthetic indicator combining multiple parameters to assess soil's capacity to support crops.

🔧 Physical Characteristics of the Sensor

Robust Design

  • Dimensions: 45 × 15 × 123 mm (compact)
  • Weight: ~200g
  • Body Material: Black flame-retardant epoxy resin
  • Electrodes: Special treated anti-corrosion alloy
  • Waterproofing: IP68 (submersible)
  • Resistance: Mechanical shocks, UV, chemicals

Communication Interface

  • Protocol: Modbus RTU (RS485)
  • Baud rate: 2400, 4800, 9600 bps (default: 4800)
  • Address: 0x01-0xFE (default: 0x01)
  • Cable: 4 wires (power + RS485 A/B)
  • Standard length: 2m (customizable)

Power Supply

  • Voltage: 4.5-30V DC (standard)
  • Voltage: 3.6-30V DC (low power version)
  • Consumption:
    • Standard: < 0.5W @ 24V
    • Low power: 20mA active, 31µA standby
  • Protection: Reverse polarity, overvoltage

Operating Conditions

  • Working temperature: -20°C to +60°C
  • Storage temperature: -40°C to +85°C
  • Humidity: 0-100% RH
  • Pressure: Compatible with immersion up to 1m

📚 The TerraSoil Library

Vision and Objectives

TerraSoil was born from a simple observation: professional agricultural sensors are difficult to use.

Problems identified:

  • ❌ Documentation only in Chinese
  • ❌ Complex Modbus protocol
  • ❌ Manual CRC calculations
  • ❌ Technical RS485 management
  • ❌ No ready-to-use examples

TerraSoil Solution:

// WITHOUT TerraSoil: 200+ lines of code
uint8_t request[8];
request[0] = MODBUS_ADDRESS;
request[1] = 0x03;
// ... 40 lines of Modbus configuration
uint16_t crc = calculateCRC(request, 6);
// ... RS485 management, parsing, conversion...

// WITH TerraSoil: 1 line!
sensor.readSensor(data);

Library Architecture

TerraSoil/
├── src/
│   ├── TerraSoil.h          # Public interface
│   └── TerraSoil.cpp        # Implementation
├── examples/
│   ├── BasicReading/        # Quick start
│   └── AdvancedReading/     # Advanced features
├── keywords.txt             # IDE syntax coloring
├── library.properties       # Arduino metadata
└── README.md               # User documentation

Dependencies

No external dependencies!

TerraSoil only uses:
- Arduino.h (standard)
- HardwareSerial.h (ESP32 standard)

🚀 Installation

Method 1: Arduino Library Manager (Recommended)

1. Open Arduino IDE
2. Go to Sketch → Include Library → Manage Libraries
3. Search "TerraSoil"
4. Click Install
5. Restart IDE

Method 2: Manual Installation

# 1. Download TerraSoil.zip

# 2. Arduino IDE
Sketch → Include Library → Add .ZIP Library → Select TerraSoil.zip

# 3. Verify installation
File → Examples → TerraSoil → BasicReading

Method 3: Git Clone (Developers)

cd ~/Documents/Arduino/libraries/
git clone https://github.com/terrasoil/TerraSoil.git

⚡ Quick Start

Minimal Code (5 Lines)

#include <TerraSoil.h>

HardwareSerial RS485Serial(1);
TerraSoil sensor(&RS485Serial, 1);  // RTS pin = GPIO1
TerraSoilData data;

void setup() {
  Serial.begin(115200);
  sensor.begin(44, 43, 4800);  // RX=44, TX=43, Baud=4800
}

void loop() {
  if (sensor.readSensor(data)) {  // ⭐ ONE LINE!
    Serial.printf("Moisture: %.1f%% | Temp: %.1f°C | pH: %.1f\n",
                  data.moisture, data.temperature, data.ph);
  }
  delay(5000);
}

Output:

Moisture: 45.2% | Temp: 23.5°C | pH: 6.8
Moisture: 45.3% | Temp: 23.6°C | pH: 6.8
...

🔌 Wiring Diagram

Wiring Diagram

Complete Connection Guide

Components Required:

  • 🌱 NPK Soil Sensor SN-300
  • 📡 RS485 to TTL Module
  • 🔌 XIAO ESP32-S3 (or any ESP32)
  • 🔋 5V Power Supply
  • 🔗 Dupont Wires

Connection Table

NPK Sensor Wire Color RS485 Module XIAO ESP32-S3
VCC 🟤 Brown VCC 5V
GND ⚫ Black GND GND
A 🟡 Yellow A+ -
B 🔵 Blue B- -
- - RO (RX) GPIO44 (D7)
- - DI (TX) GPIO43 (D6)
- - DE + RE GPIO1 (D1)

Step-by-Step Connection:

Step 1: Power Connections
────────────────────────────
NPK Sensor Brown (VCC) → RS485 Module VCC → ESP32 5V
NPK Sensor Black (GND) → RS485 Module GND → ESP32 GND

Step 2: RS485 Communication
────────────────────────────
NPK Sensor Yellow (A) → RS485 Module A+
NPK Sensor Blue (B)   → RS485 Module B-

Step 3: ESP32 Serial Connection
────────────────────────────────
RS485 RO (Receive)  → ESP32 GPIO44 (D7)
RS485 DI (Transmit) → ESP32 GPIO43 (D6)
RS485 DE + RE       → ESP32 GPIO1 (D1)

⚠️ Important Notes:

  1. Common Ground: All GND must be connected together
  2. 5V Power: Sensor requires 4.5-30V DC (5V recommended)
  3. DE/RE Pins: Must be tied together on RS485 module
  4. Cable Length: Up to 1200m possible with RS485
  5. Shielded Cable: Recommended for outdoor installations

Power Consumption:

Sensor:     ~100 mA @ 5V = 0.5W
ESP32:      ~80 mA @ 5V  = 0.4W
RS485:      ~10 mA @ 5V  = 0.05W
───────────────────────────────
Total:      ~190 mA      = 0.95W

📖 Technical Documentation

TerraSoil Class

Constructor

TerraSoil(HardwareSerial* serial, uint8_t rtsPin, uint8_t address = 0x01)

Parameters:

  • serial: Pointer to HardwareSerial (UART1, UART2)
  • rtsPin: GPIO for DE/RE control of RS485 module
  • address: Modbus address of sensor (default: 0x01)

Example:

HardwareSerial RS485Serial(1);  // UART1
TerraSoil sensor(&RS485Serial, 1, 0x01);

begin() Method

bool begin(uint8_t rxPin, uint8_t txPin, uint32_t baud = 4800)

Function: Initialize RS485 communication

Parameters:

  • rxPin: GPIO for reception (RX)
  • txPin: GPIO for transmission (TX)
  • baud: Communication speed (2400, 4800, 9600)

Returns: true if successful

Example:

if (!sensor.begin(44, 43, 4800)) {
  Serial.println("Sensor initialization error");
}

⭐ readSensor() Method - MAIN FUNCTION

bool readSensor(TerraSoilData &data)

Function: Read all 10 sensor parameters

Parameter:

  • data: TerraSoilData structure (passed by reference)

Returns:

  • true: All readings successful
  • false: At least one reading failed

Execution time: ~500ms (10 parameters × 50ms)

Complete Example:

TerraSoilData data;

if (sensor.readSensor(data)) {
  // ✅ Valid data
  Serial.printf("Moisture: %.1f%%\n", data.moisture);
  Serial.printf("N: %d mg/kg\n", data.nitrogen);
  Serial.printf("Status: %s\n", data.success ? "OK" : "ERROR");
} else {
  // ❌ Reading error
  Serial.println("Sensor reading failed");
}

readRegister() Method

bool readRegister(uint16_t regAddress, uint16_t &value)

Function: Read a specific Modbus register

Parameters:

  • regAddress: Register address (0x0000-0x07D1)
  • value: Variable to store value (passed by reference)

Returns: true if reading successful

Example:

uint16_t humidity_raw;
if (sensor.readRegister(TERRASOIL_REG_MOISTURE, humidity_raw)) {
  float humidity = humidity_raw / 10.0;
  Serial.printf("Moisture: %.1f%%\n", humidity);
}

Available Registers:

TERRASOIL_REG_MOISTURE      // 0x0000 - Moisture
TERRASOIL_REG_TEMPERATURE   // 0x0001 - Temperature
TERRASOIL_REG_CONDUCTIVITY  // 0x0002 - EC
TERRASOIL_REG_PH            // 0x0003 - pH
TERRASOIL_REG_NITROGEN      // 0x0004 - Nitrogen
TERRASOIL_REG_PHOSPHORUS    // 0x0005 - Phosphorus
TERRASOIL_REG_POTASSIUM     // 0x0006 - Potassium
TERRASOIL_REG_SALINITY      // 0x0007 - Salinity
TERRASOIL_REG_TDS           // 0x0008 - TDS
TERRASOIL_REG_FERTILITY     // 0x000C - Fertility

TerraSoilData Structure

struct TerraSoilData {
  // Physical measurements
  float moisture;        // Moisture (%) - 0-100
  float temperature;     // Temperature (°C) - -40 to 80
  uint16_t conductivity; // EC (µS/cm) - 0-20000
  float ph;              // pH - 3-9
  
  // NPK nutrients
  uint16_t nitrogen;     // Nitrogen N (mg/kg) - 0-2999
  uint16_t phosphorus;   // Phosphorus P (mg/kg) - 0-2999
  uint16_t potassium;    // Potassium K (mg/kg) - 0-2999
  
  // Calculated parameters
  uint16_t salinity;     // Salinity - 0-20000
  uint16_t tds;          // TDS (mg/L) - 0-10000
  uint16_t fertility;    // Fertility (mg/kg) - 0-3000
  
  // Metadata
  bool success;          // true if reading successful
  uint32_t timestamp;    // Timestamp (millis())
};

💡 Practical Examples

Example 1: Automatic Irrigation System

#include <TerraSoil.h>

#define PUMP_PIN 5
#define MOISTURE_MIN 30.0  // Low threshold
#define MOISTURE_MAX 60.0  // High threshold

HardwareSerial RS485Serial(1);
TerraSoil sensor(&RS485Serial, 1);
TerraSoilData data;

void setup() {
  Serial.begin(115200);
  pinMode(PUMP_PIN, OUTPUT);
  sensor.begin(44, 43, 4800);
}

void loop() {
  if (sensor.readSensor(data)) {
    Serial.printf("💧 Moisture: %.1f%%\n", data.moisture);
    
    if (data.moisture < MOISTURE_MIN) {
      // Soil too dry → Activate pump
      digitalWrite(PUMP_PIN, HIGH);
      Serial.println("🚿 PUMP ON - Irrigation started");
    } 
    else if (data.moisture > MOISTURE_MAX) {
      // Soil sufficiently moist → Stop pump
      digitalWrite(PUMP_PIN, LOW);
      Serial.println("✅ PUMP OFF - Soil hydrated");
    }
  }
  
  delay(60000);  // Check every minute
}

Example 2: MQTT IoT Dashboard

#include <TerraSoil.h>
#include <WiFi.h>
#include <PubSubClient.h>
#include <ArduinoJson.h>

const char* mqtt_server = "broker.emqx.io";
const char* topic = "farm/soil/sensor01";

WiFiClient espClient;
PubSubClient client(espClient);
TerraSoil sensor(&Serial1, 1);
TerraSoilData data;

void setup() {
  Serial.begin(115200);
  sensor.begin(44, 43, 4800);
  
  WiFi.begin("SSID", "PASSWORD");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  
  client.setServer(mqtt_server, 1883);
}

void publishData() {
  if (!sensor.readSensor(data)) return;
  
  // Create JSON
  StaticJsonDocument<512> doc;
  doc["sensor_id"] = "NPK_001";
  doc["moisture"] = data.moisture;
  doc["temperature"] = data.temperature;
  doc["ph"] = data.ph;
  doc["nitrogen"] = data.nitrogen;
  doc["phosphorus"] = data.phosphorus;
  doc["potassium"] = data.potassium;
  doc["ec"] = data.conductivity;
  doc["timestamp"] = data.timestamp;
  
  // Serialize and publish
  char buffer[512];
  serializeJson(doc, buffer);
  client.publish(topic, buffer);
  
  Serial.println("📡 Data published to MQTT");
}

void loop() {
  if (!client.connected()) {
    client.connect("ESP32Client");
  }
  client.loop();
  
  publishData();
  delay(60000);  // Publish every minute
}

🌾 Smart Agriculture with TerraSoil

Real Use Cases

1. 🍅 Greenhouse Tomato Cultivation

Challenge: Tomatoes require precise pH control (6.0-6.8) and constant moisture (60-80%).

TerraSoil Solution:

// Real-time monitoring + automatic adjustment
if (data.ph < 6.0) {
  addLime();  // Increase pH
} else if (data.ph > 6.8) {
  addSulfur();  // Decrease pH
}

if (data.moisture < 60) {
  startIrrigation();
} else if (data.moisture > 80) {
  stopIrrigation();
  increaseVentilation();
}

Results:

  • ✅ Yield +35%
  • ✅ Water savings 40%
  • ✅ Disease reduction 60%

🏢 Professional Applications

1. Smart Farms

Multi-Sensor Deployment:

10-hectare farm = 20 TerraSoil sensors
├── 5 sensors - North Zone (Tomatoes)
├── 5 sensors - South Zone (Corn)
├── 5 sensors - East Zone (Vegetables)
└── 5 sensors - West Zone (Fruit trees)

Total budget: ~$4000 for complete system
ROI: 1-2 years

System Architecture:

[TerraSoil Sensors] → [ESP32 + MQTT] → [Cloud Broker]
                              ↓
                    [Web/Mobile Dashboard]
                              ↓
                    [Automatic Irrigation System]
                              ↓
                    [SMS/Email Alerts]

🔨 Library Development

History and Motivation

Project Genesis (2024):

Initial Problem:
│
├── SN-300 sensor purchased for agricultural project
├── Documentation only in Chinese
├── No code examples
├── Complex Modbus protocol
└── 200+ lines of code for simple reading
      ↓
   💡 IDEA
      ↓
Create universal Arduino library
easy to use for all users

Development Objectives:

  1. ✅ Simplicity: 1 line of code for 10 measurements
  2. ✅ Reliability: Automatic error handling
  3. ✅ Performance: Optimized reading time
  4. ✅ Documentation: Complete examples EN/FR
  5. ✅ Compatibility: ESP32, ESP8266, Arduino

Technologies and Concepts Used

1. Modbus RTU Protocol

TerraSoil implements the Modbus RTU (Remote Terminal Unit) protocol:

Modbus frame structure:
┌──────────────────────────────────────────┐
│ Address │ Function │ Data    │ CRC-16   │
│ (1 byte)│ (1 byte) │ (N bytes)│ (2 bytes)│
└──────────────────────────────────────────┘

Function 0x03: Read Holding Registers
├── Used to read 10 parameters
├── Request: 8 bytes
└── Response: 7 bytes per register

CRC-16 Implementation:

uint16_t TerraSoil::calculateCRC(const uint8_t *buffer, uint8_t length) {
  uint16_t crc = 0xFFFF;
  for (uint8_t i = 0; i < length; i++) {
    crc ^= buffer[i];
    for (uint8_t j = 0; j < 8; j++) {
      if (crc & 0x0001) {
        crc >>= 1;
        crc ^= 0xA001;  // Modbus polynomial
      } else {
        crc >>= 1;
      }
    }
  }
  return crc;
}

2. RS485 Communication

Working principle:

RS485 = Differential communication
├── Signal A (positive)
├── Signal B (negative)
└── Electromagnetic noise immunity

Half-Duplex Management:
├── RTS = HIGH → Transmission Mode
└── RTS = LOW  → Reception Mode

Maximum distance: 1200 meters
Speed: up to 10 Mbps
Devices on bus: up to 32 (or 247 with repeaters)

❓ FAQ

For Beginners

Q1: I've never used Arduino, can I use TerraSoil?

A: Yes! TerraSoil is designed for beginners. Just follow:

  1. Install Arduino IDE
  2. Install TerraSoil library
  3. Copy-paste BasicReading example
  4. Upload to ESP32
  5. It works!

Q2: What hardware do I need to buy?

A: Minimum list (~$50):

  • SN-300 NPK Sensor (~$30)
  • RS485 Module (~$3)
  • XIAO ESP32-S3 (~$7)
  • Dupont Wires (~$3)
  • 5V Power Supply (~$7)

Q3: Does the sensor work with Arduino Uno?

A: Yes, but with limitations:

  • ✅ Compatible
  • ⚠️ Use SoftwareSerial
  • ⚠️ Reduced performance
  • ✅ ESP32 recommended (better)

For Professionals

Q4: Accuracy and sensor calibration?

A:

  • Moisture: ±2% (factory calibrated)
  • Temperature: ±0.5°C (factory calibrated)
  • pH: ±0.2 pH (calibration recommended every 6 months)
  • EC: ±3% (verify with standard solution)
  • NPK: Reference values (lab test required)

Q5: Integration into existing industrial system?

A: Multiple options:

// Option 1: MQTT
publishToMQTT(data);

// Option 2: Modbus TCP Gateway
modbusGateway.forward(data);

// Option 3: REST API
httpPost("https://api.farm.com/sensors", data);

// Option 4: Direct database
insertIntoDatabase(data);

📜 License

MIT License

Copyright (c) 2025 Kennedy KITOKO MUYUNGA

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

🙏 Acknowledgments

  • Shandong Sain Electronic for the SN-300 sensor
  • Arduino Community for support
  • Prof. Zhang Xiangfu (张乡夫) - Project supervisor
  • Beijing Institute of Technology - Research facilities
  • Beta testers: Agricultural research centers
  • Contributors: All developers who participated

📞 Contact

Developer

Kennedy KITOKO MUYUNGA

Project Supervisor

Prof. Zhang Xiangfu (张乡夫)

  • 🏢 School of Integrated Circuits and Electronics
  • 🎓 Beijing Institute of Technology
  • 📍 Laboratory Instructor

🌱 Grow with precision, harvest with intelligence 🌱

TerraSoil - Making Agriculture Smarter, One Sensor at a Time

Developed with ❤️ in Beijing by Kennedy KITOKO MUYUNGA

January 25, 2025

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