Sending Sensor Data Over WiFi
ROB-24601 
Troubleshooting
If you aren't getting anything on the LCD display, or some other issue seems to have shown up, there are a few things you can check. Let's start by connecting the transmitting board (with the Environmental Sensor) to your computer with a USB cable, then opening up the Serial Monitor window. If the sensor is working properly and the WiFi module is sending the package, you should see something like this in the Serial Monitor:
Temperature in Fahrenheit: 74.46
Humidity: 22.21
Pressure: 84992.97
Sent with success
If the receiver isn't powered up, you'll also see:
Last Packet Send Status: Delivery Fail
If all is as it should be here, you can connect connect the receiving ESP32 to your computer, power up the transmitter with a battery or power supply, and check the results there. The Serial Monitor should be displaying the temperature, humidity, and pressure readings. If you're still having issues, reach out to our support team.
If your product is not working as you expected or you need technical assistance or information, head on over to the SparkFun Technical Assistance page for some initial troubleshooting.
If you don't find what you need there, the SparkFun Forums are a great place to find and ask for help. If this is your first visit, you'll need to create a Forum Account to search product forums and post questions.