Connect the DHT11 power and ground to the power/ground rails of the breadboard. Then, connect the data pin to a 300 ohm resistor that goes to power and to a digital input of the ESP32 (pinout of ESP32 and DHT11 can be easily found online).

Connect long side of photoresistor to power and the other side to a 10 kohm resistor. Connect that resistor to ground. Connect the high voltage side of the resistor to and ADC input of the ESP32.

The SMS comes in two parts which must be connected to each other via 2 female-female wires. Connect the PCB side of the SMS to the breadboard, connect power/ground pins, and connect the ANALOG data pin to an ADC pin of the ESP32.

Using a USB to UART connector, upload the code from main.cpp to the ESP32 through the PlatformIO environment (use VSCode and install PlatformIO through the extensions tab). You will need to download two libraries to the PIO project, "Adafruit Unified Sensors" and "DHT Sensor Library"

Run the iPlant.py file, which starts the server (note that you will have to input your own WiFi SSID and password as well as your host IP address).

Once code is done uploading, hit the reset button on the ESP32

This should pull up the iPlant home website and you will be able to see sensor readings by clicking on the "My Plant" tab