Learn electronics, coding, and projects — step by step.
Last time, I posted tutorial on how to use the ESP32 configured as WiFi Station. In order for us to control something in our web server, we need to connect to ESP32 and our device in the same Access Point or router. Now we will directly connect to our ESP32 Web Server by configuring it […]
ESP32 has a WIFI capability where we can take advantage for controlling anything remotely In this tutorial we will learn how to use ESP32 to host a website for controlling anything lets say turning ON or OFF of the light at home. In this video, we will just use LEDs for demonstration. If you decided […]
In this tutorial, you will be able to use the SIM800L GSM module for controlling anything through SMS. To do that, we just need to parse the incoming SMS from SIM800L through serial communication. In this Arduino sketch, we will be parsing the following: Find the string “CMT:”, then save the sender’s mobile number for […]
In this article, I will discuss how we can use a matrix keypad for text entry purposes which is similar to T9 keypad used by Nokia and other bar phones. The circuit is the same as the previous tutorial. Be sure to check it out here: 4×4 Keypad Introduction CIRCUIT DIAGRAM BILL OF MATERIALS Arduino […]
Keypad is commonly use in devices like ATM machine, microwave oven, safety vault, security door lock, and many more. In this tutorial we will focus on the most popular to electronics enthusiasts and tinkerers which is a 4×4 matrix keypad. We will discuss how it works and at the last we will provide an example […]