![]() If you search for GPRS APN settings followed by your phone plan provider name, (in my case its: “ GPRS APN vodafone Portugal”), you can usually find in a forum or in their website all the information that you need. You need the domain name, username and a password. To connect your SIM card to the internet, you need to have your phone plan provider APN details. We recommend using a SIM card with a prepaid or monthly plan, so that you know exactly how much you’ll spend. To use the TTGO T-Call ESP32 SIM800L board, you need a nano SIM card with a data plan. Visualize Your Sensor Readings from Anywhere in the World (ESP32 + MySQL + PHP).If you want to follow this exact project, you should follow the next tutorial to prepare your own server domain. We’ll be using our own server domain with a database to publish all the data, but you can use any other service like ThingSpeak, IFTTT, etc… In this project we’ll show you how to publish data to any cloud service. Installing the ESP32 Board in Arduino IDE (Windows, Mac OS X, Linux).Follow the next tutorial, if you haven’t already. ![]() So, you need to have the ESP32 add-on installed in your Arduino IDE. We’ll program the ESP32 using Arduino IDE. Get Hosting and Domain Name with Bluehost » Prerequisites 1. Which doesn’t cost you anything extra and helps support our work. If you don’t have a hosting account, I would appreciate if you sign up for Bluehost using my link. If you don’t have a hosting account, I recommend signing up for Bluehost, because they can handle all the project requirements. We’ll be using a BME280 sensor, but you should be able to use any other sensor that best suits your needs. In our example, the sleep time is 60 minutes, but you can easily change it in the code. It publishes the sensor readings to the server and goes back to sleep.It wakes up and connects to the internet using your SIM card data plan.The T-Call ESP32 SIM800L board is in deep sleep mode. ![]() In summary, here’s how the project works: ![]() Then, upload the code provided in this project to your ESP32 board. If you want to follow this exact project, you should follow that previous tutorial first to prepare your own server domain. You can publish your sensor readings to any other service, like ThingSpeak, IFTTT, etc… In this project, we’ll publish sensor readings to that server. In a previous project, we’ve created our own server domain with a database to plot sensor readings in charts that you can access from anywhere in the world. ![]()
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December 2022
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