Differences

This shows you the differences between two versions of the page.

--- amc:ss2025:group-f:start [2025/07/22 14:38] – paul-christian.thoma
+++ amc:ss2025:group-f:start [2025/07/24 09:07] (current) – elham.mohammadi
@@ Line 1: / Line 1: @@
 ======  Automated Plant Watering System with MQTT and ESP32-S3 ======
+Paul-Christian Thoma(32436)-Elham Mohammadi(32475)-Deniz-Zeynep Adem(33784)
  ===== 1. Introduction =====
@@ Line 8: / Line 8: @@
 This project presents a smart plant watering system designed to operate semi-autonomously. It monitors the soil moisture and automatically activates a peristaltic pump via a latching relay to deliver water when needed. The system uses two ESP32-S3 microcontrollers connected over Wi-Fi, communicating through MQTT protocol to exchange sensor data and control messages.
 The architecture is split into two subsystems:
-* **Sensor Node:** Measures soil moisture and publishes data to an MQTT broker.
+**Sensor Node:** Measures soil moisture and publishes data to an MQTT broker.
-* **Actuator Node:** Receives watering commands via MQTT and controls the pump.
+**Actuator Node:** Receives watering commands via MQTT and controls the pump.
 Users can integrate remote notifications or dashboards via tools such as Node-RED, Telegram bots, or email alerts.
----
+{{ :amc:ss2025:group-f:c24bef46-3e98-49e7-a7a7-43a95f6fb40a.jpeg?direct&400 |}}
  ====== 2. Materials and Methods ======
@@ Line 24: / Line 28: @@
-| Component                                  | Description                                                                 |
+| **Component**                              | **Description**                                                             |
-| ------------------------------------------ | --------------------------------------------------------------------------- |
+| **ESP32-S3**                               | Microcontroller with built-in Wi-Fi used for both sensor and actuator nodes |
-| **ESP32-S3 DevKit**                        | Microcontroller with built-in Wi-Fi used for both sensor and actuator nodes |
 | **Capacitive Soil Moisture Sensor**        | Provides analog output corresponding to soil moisture                       |
 | **DFRobot Peristaltic Pump (DFR0523)**     | Waters the plant when triggered                                             |
 | **2-Coil Latching Relay (HF0D2/005-S-L2)** | Used to control the pump with minimal power consumption                     |
-| **Flexible PVC Tubing**                    | Connects pump to plant pot                                                  |
+| **Flexible PVC Tubing**                    | Connects pump to plant pot and water source                                 |
 | **LED and resistor (optional)**            | Indicates system status (e.g., dry soil)                                    |
 | **External Power Supply**                  | Powers the pump and relay (e.g., 5V/12V DC adapter)                         |
  ==== 2.2 Software and Tools ====
+  * **Arduino IDE**: For ESP32 programming
+  * **MQTT Broker (HiveMQ Public Broker)**: For communication between devices
+  * **Node-RED (optional)**: For visualization, control, or automation
+  * **Python (optional)**: For logic and notifications
+  * **Telegram Bot (optional)**: Sends alerts to user
+  * **Power Profiler Kit (optional)**: For measuring energy consumption
-* **Arduino IDE**: For ESP32 programming
-* **MQTT Broker (HiveMQ Public Broker)**: For communication between devices
-* **Node-RED (optional)**: For visualization, control, or automation
-* **Python (optional)**: For logic and notifications
-* **Telegram Bot (optional)**: Sends alerts to user
-* **Power Profiler Kit (optional)**: For measuring energy consumption
----
 ==== 2.3 System Overview ====
 The system operates in two parts:
  **Sensor Node (ESP32-S3 + Soil Sensor)**
-* Reads analog soil moisture value using GPIO35.
+  * Reads analog soil moisture value using GPIO35.
-* Publishes sensor data periodically to MQTT topic `plant/soilMoisture`.
+  * Publishes sensor data periodically to MQTT topic `plant/soilMoisture`.
-* Locally lights up LED if moisture is below threshold.
+  * Locally lights up LED if moisture is below threshold.
-* Could optionally be extended with temperature/humidity sensors.
+  * Could optionally be extended with temperature/humidity sensors.
  **Actuator Node (ESP32-S3 + Latching Relay + Pump)**
-* Subscribes to MQTT topic `plant/waterCommand`.
+  * Unordered List ItemSubscribes to MQTT topic `plant/waterCommand`.
-* Activates the peristaltic pump via latching relay when commanded.
+  * Activates the peristaltic pump via latching relay when commanded.
-* Could publish status back (e.g., `plant/pumpStatus`) for monitoring.
+  * Could publish status back (e.g., `plant/pumpStatus`) for monitoring.
----
  ===== 3. Results =====
@@ Line 72: / Line 76: @@
- Sensor Node Highlights:
+ **Sensor Node Highlights:**
-* Uses `analogRead()` to read GPIO35.
+  * Unordered List ItemUses `analogRead()` to read GPIO35.
-* Publishes moisture readings every 5 seconds.
+  * Publishes moisture readings every 5 seconds.
-* LED indicates dryness when value > threshold (e.g., 2500).
+  * LED indicates dryness when value > threshold (e.g., 2500).
- Actuator Node Highlights:
+ **Actuator Node Highlights:**
-* Subscribes to MQTT command `plant/waterCommand`.
+  * Unordered List ItemSubscribes to MQTT command `plant/waterCommand`.
-* Activates one coil of the latching relay to start pump, and another to stop it.
+  * Activates one coil of the latching relay to start pump, and another to stop it.
-* Provides quick response and avoids continuous current draw.
+  * Provides quick response and avoids continuous current draw.
- MQTT Topic Examples:
+ **MQTT Topic Examples:**
-* `plant/soilMoisture` – Publishes sensor readings.
+  * `plant/soilMoisture` – Publishes sensor readings.
-* `plant/waterCommand` – Accepts values `"ON"` or `"OFF"`.
+  * `plant/waterCommand` – Accepts values `"ON"` or `"OFF"`.
-* `plant/pumpStatus` – (Optional) Publishes `"WATERING"` or `"IDLE"`.
+  * `plant/pumpStatus` – (Optional) Publishes `"WATERING"` or `"IDLE"`.
- Optional Python Logic:
+ **Optional Python Logic:**
+  * Subscribes to `plant/soilMoisture`
+  * If value > 2800 → publishes `"ON"` to `plant/waterCommand`
+  * Sends email or Telegram alert
-* Subscribes to `plant/soilMoisture`
+===  3.2 Testing and Observations ===
-* If value > 2800 → publishes `"ON"` to `plant/waterCommand`
-* Sends email or Telegram alert
-.2 Testing and Observations
+  * In dry air, soil moisture value > 3300
+  * Wet soil: 1800–2000
-* In dry air, soil moisture value > 3300
+  * Saturated soil (in water): < 1700
-* Wet soil: 1800–2000
-* Saturated soil (in water): < 1700
 Pump successfully turns on when soil is dry and stops when moisture reaches target range.
----
 ====  4. Discussion and Conclusion ====
@@ Line 113: / Line 116: @@
 Key advantages:
-* **Low power**: Latching relay prevents continuous power usage
+  * **Low power**: Latching relay prevents continuous power usage
-* **Remote access**: MQTT allows external control or monitoring
+  * **Remote access**: MQTT allows external control or monitoring
-* **Extendibility**: Easily extendable with humidity sensors, temperature sensors, water tank monitoring, etc.
+  * **Extendibility**: Easily extendable with humidity sensors, temperature sensors, water tank monitoring, etc.
  === 4.1 Improvements and Future Work ===
----
 =====  5. Media and Demonstration =====
->  \[Link to demo video]
->  Fritzing sketch of the circuit
-> Photos of the prototype and setup
->  Screenshot of MQTT dashboard and Telegram messages
 ---
@@ Line 136: / Line 131: @@
-* [ESP32 Official Documentation](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/)
-* [DFRobot Peristaltic Pump Wiki](https://wiki.dfrobot.com/Gravity_Peristaltic_Pump_SKU_DFR0523)
-* [HiveMQ MQTT Broker](https://www.hivemq.com/public-mqtt-broker/)
-* [Node-RED Documentation](https://nodered.org/docs/)
-* [Telegram Bot API](https://core.telegram.org/bots/api)
-* [ESP32 ADC Tutorial – Random Nerd Tutorials](https://randomnerdtutorials.com/esp32-adc-analog-read-arduino-ide/)
 -