Project Files of IoT Smart Irrigation System with ESP32 - Proteus Simulation

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  IoT Smart Irrigation System with ESP32 - Proteus Simulation Project V1.0
  The Engineering Projects - www.TheEngineeringProjects.com
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IMPORTANT LINKS
  The project tutorial (circuit, code, simulation results):
    https://www.theengineeringprojects.com/2026/11/iot-smart-irrigation-system-esp32-proteus-simulation.html
  The libraries this project is built from (each post has its own full download and tutorial):
    ESP32 DevKit V1 board:
      https://www.theengineeringprojects.com/2026/10/esp32-devkit-v1-library-for-proteus-v2-0.html
    Capacitive soil moisture sensor:
      https://www.theengineeringprojects.com/2026/10/capacitive-soil-moisture-sensor-library-for-proteus-v1-0.html
    DHT22 temperature and humidity sensor:
      https://www.theengineeringprojects.com/2026/10/dht11-dht22-library-for-proteus-v1-0.html
    Rain sensor:
      https://www.theengineeringprojects.com/2026/10/rain-sensor-library-for-proteus-v2-0.html
    Relay module:
      https://www.theengineeringprojects.com/2026/10/relay-module-library-for-proteus-v1-0.html
    Mini submersible water pump:
      https://www.theengineeringprojects.com/2026/10/mini-submersible-water-pump-library-for-proteus-v1-0.html
    Laptop WiFi Monitor:
      https://www.theengineeringprojects.com/2026/10/laptop-wifi-monitor-library-for-proteus.html
    Mobile WiFi Monitor:
      https://www.theengineeringprojects.com/2026/10/mobile-wifi-monitor-library-for-proteus.html
  Support our free work: https://www.theengineeringprojects.com/donate

FILE STRUCTURE
ESP32-Smart-Irrigation-TEP-v1.0/
|-- Proteus Library Files/
|   |-- TEPCAPSOIL.LIB                                 60.1 KB   a part of the project -> LIBRARY folder
|   |-- TEPDHT.LIB                                    155.3 KB   a part of the project -> LIBRARY folder
|   |-- TEPESP32V1.LIB                                 36.6 KB   a part of the project -> LIBRARY folder
|   |-- TEPLAPTOP.LIB                                  39.5 KB   a part of the project -> LIBRARY folder
|   |-- TEPMOBILE.LIB                                  13.1 KB   a part of the project -> LIBRARY folder
|   |-- TEPRAIN.LIB                                   157.2 KB   a part of the project -> LIBRARY folder
|   |-- TEPRELAY.LIB                                  490.4 KB   a part of the project -> LIBRARY folder
|   |-- TEPSUBPUMP.LIB                                 16.1 KB   a part of the project -> LIBRARY folder
|-- Proteus Model Files/
|   |-- TEPCAPSOIL.DLL                                312.5 KB   a model -> MODELS folder
|   |-- TEPDHT.DLL                                    306.5 KB   a model -> MODELS folder
|   |-- TEPNET.DLL                                     2.89 MB   a model -> MODELS folder
|   |-- TEPRAIN.DLL                                   380.0 KB   a model -> MODELS folder
|   |-- TEPRELAY.DLL                                  330.0 KB   a model -> MODELS folder
|   |-- TEPSUBPUMP.DLL                                296.5 KB   a model -> MODELS folder
|-- Proteus Simulation/
|   |-- ESP32_Smart_Irrigation.hex                     74.3 KB   the firmware
|   |-- ESP32-Smart-Irrigation.pdsprj                  35.8 KB   the project simulation
|   |-- TEPCAPSOIL.DLL                                312.5 KB   copy of the model
|   |-- TEPDHT.DLL                                    306.5 KB   copy of the model
|   |-- TEPNET.DLL                                     2.89 MB   copy of the model
|   |-- TEPRAIN.DLL                                   380.0 KB   copy of the model
|   |-- TEPRELAY.DLL                                  330.0 KB   copy of the model
|   |-- TEPSUBPUMP.DLL                                296.5 KB   copy of the model
|-- Arduino Code/
|   |-- ESP32_Smart_Irrigation/ESP32_Smart_Irrigation.ino   11.7 KB   the sketch (source of the .hex)
|-- README.txt                                        ~10.2 KB   this file
Total: 10.03 MB (unzipped). The C++ source code of the models is not included.

WHAT IS IT?
  A complete IoT project you can run in Proteus: an ESP32 DevKit V1 waters a plant by itself and shows the soil,
  the air, the rain and the pump on a web dashboard for a laptop and a phone, all inside one Proteus simulation.
    * Capacitive soil moisture sensor v1.2 (CAPSOILADVTEP): AOUT on D34, VCC on 5 V (VIN). 2.54 V in air and
      1.27 V in water; the sketch turns the voltage into a moisture % between the two.
    * DHT22 (DHT22ADVTEP): DATA on D4; the sketch reads its 40 bits itself, no library needed.
    * Rain sensor (RAINADVTEP): A0 on D35 (how wet the plate is), D0 on D27 (LOW while it rains).
    * 1-channel relay module (RELAY1ADVTEP): IN on D26 (active LOW), VCC on 5 V; its contacts switch the mini
      submersible pump (SUBPUMPTEP): +5 V on NO, the pump on COM, the pump's other wire on GND.
    * Laptop WiFi Monitor (PC1) and Mobile WiFi Monitor (MOB1) open the dashboard at http://192.168.1.101/.
  AUTO: the pump starts when the soil is drier than 35 % and stops when it is wetter than 55 %; never while it
  rains (a rain delay), never longer than 60 s at a time, and not again within 20 s. The page can also switch the
  pump ON or OFF by hand, or water for 10 s and go back to AUTO. The ESP32 joins TEP-WiFi (password 12345678) and
  gets 192.168.1.101. Its pages:
    /            the dashboard: status, links, soil moisture, the trend picture, air, rain, pump and water used
    /trend.bmp   the last 5 minutes of the soil moisture with the thresholds, the pump and the rain, drawn by the ESP32
    /auto /on /off /water   the modes
    /data        all the readings as JSON

TEST STATUS
  Tested in Proteus 8 Professional on Windows 11, the run that made the tutorial's screenshots:
    * Wi-Fi joined in about 2 s of simulation; the dashboard and its trend picture served to both monitors.
    * DHT22 read every 3 s: 31.0 C and 42 % (its properties); the soil at VWC 21 read 47 - 49 %.
    * DRY OUT on the soil: AUTO started the pump at 33.1 s at 34.8 %; WATER IT twice soaked the soil and AUTO
      stopped the pump at 44.7 s at 55.5 % (11.6 s of pumping, 0.27 L).
    * Rain at 53.4 s with the soil set to DRY (19 %): "rain delay", the pump stayed off. The rain stopped at
      61.5 s; the 20 s pause after the last watering ended and the pump started at 64.7 s; the soil's WET preset
      stopped it at 68.7 s (57.6 %).
    * WATER 10 s from the laptop at 72.1 s: the pump ran until 82.3 s, then AUTO saw wet soil (67 %) and left it off.
  89 s of simulation took about 17 minutes on our PC with all the captures (the ESP32 board runs at about half of
  real time without them).

INSTALLATION
  1. Close Proteus. Extract the WHOLE zip file, for example to your Desktop.
  2. Copy the files from "Proteus Library Files" into the LIBRARY folder of Proteus, for example
     C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\LIBRARY
  3. Copy the files from "Proteus Model Files" into the MODELS folder (next to LIBRARY).
  4. Start Proteus. Press P in the schematic and search for ESP32 DEVKIT V1, CAPSOILADVTEP, DHT22ADVTEP,
     RAINADVTEP, RELAY1ADVTEP or SUBPUMPTEP to check that the parts are there.

RUN THE SIMULATION
  1. Open "Proteus Simulation\ESP32-Smart-Irrigation.pdsprj". Keep the .hex and .DLL files beside it.
  2. Press Play. The ESP32's serial monitor opens; after about 2 s of simulation it prints the dashboard address.
  3. Open the Laptop WiFi Monitor (PC1) or the Mobile WiFi Monitor (MOB1) and press Go. Press Refresh on the page
     to update it.
  4. Play the weather and the soil from the pop-ups (click a part while the simulation runs): the soil's DRY OUT
     dries it until the pump starts; WATER IT soaks it; the rain sensor's Rain gives a rain delay; Clear and
     Wipe the plate end it.
  5. Try PUMP ON, PUMP OFF and WATER 10 s on the page, and watch the relay and the water in the pump's scene.
  Your own sketch: the source is in "Arduino Code". Install the TEP Boards for Proteus add-on from the ESP32 DevKit V1
  post (it is in that post's download), choose Tools > Board > ESP32 DevKit V1 (TEP Proteus), export the compiled
  binary and set the board's PROGRAM property to the new .hex file. The same sketch runs on a real ESP32 Dev Module.

PROPERTIES USED IN THIS PROJECT
  U1 ESP32 DEVKIT V1   PROGRAM=ESP32_Smart_Irrigation.hex
  U2 CAPSOILADVTEP     VWC=21 (21 % water by volume at the start)
  DHT1 DHT22ADVTEP     TEMPERATURE=31, HUMIDITY=42
  U3 RAINADVTEP        (the weather starts CLEAR)
  RLY1 RELAY1ADVTEP    (no properties)
  M1 SUBPUMPTEP        (a 30 cm lift by default)
  PC1, MOB1            HOMEPAGE=http://192.168.1.101/

TROUBLESHOOTING
  * "Connecting to TEP-WiFi......" never ends: the .hex file is missing beside the project, or TEPNET.DLL is not
    in MODELS. Copy the files again and restart Proteus.
  * The soil sensor's pop-up warns that the regulator drops out: its VCC is on 3.3 V; keep it on 5 V.
  * "DHT22: no answer": DATA is not on D4, or the sketch was changed to read faster than every 2 s.
  * The pump never starts: the soil is not dry enough, it is raining (rain delay), or the 20 s pause after the
    last watering is still running. The status line says which.
  * A part is missing when the project opens: its LIB is not in the LIBRARY folder (step 2 of INSTALLATION).

LICENCES
  * The project, the sketch, the parts (LIB files) and the models (DLL files) are made by The Engineering Projects
    and are free for learning and for your own projects. The models use only standard Windows libraries.
    The C++ source code of the models is not included; the source code is not included for any model.
  * The .hex file is built from the sketch with TEP Boards for Proteus, the Arduino add-on in the ESP32 DevKit V1
    download; its licences are listed in that download.
  * Proteus is a product of Labcenter Electronics and is not included. ESP32 and DHT22 are names of their owners;
    this project is not made or endorsed by them.

VERSION
  V1.0 - the first release of the project.
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