Ever wondered how much you’re spending on electricity each month? You’re not alone. Many of us would like to better…
Author: João Louro
Portuguese Electrical Engineer with a special interest in Embedded Systems, Real-Time Operating Systems and Audio. With a Master's Degree in Electrical and Computer Engineering in the field of Electronics and Telecommunications.

EXCEL – How to convert BIN to HEX (All Sizes)
In this tutorial, I am going to show you how to convert Binary to Hexadecimal format using an Excel worksheet…

How to Program ESP-01 (01S) to Blink a LED
Here you will learn how to program the ESP-01 using the FTDI FT232RL (YP-05) programmer and Arduino IDE. The ESP-01…

How to Use Ultrasonic Sensor HC-SR04 with Arduino UNO
In this tutorial, I am going to show you how to use an Ultrasonic Sensor (HC-SR04) with Arduino UNO. You…

ESP-01 – How to update Firmware to use AT commands
Here you will learn how to program/update the ESP-01 firmware to use AT commands using any programming board or any…

ESP-01 (01S) – How to Program using any Arduino Board
Here you will learn how to program the ESP-01 using any Arduino Board and Arduino IDE. There are several programmers…