Description of Kirchhoff’s Current Law (KCL).
Description of KVL (Kirchhoff’s Voltage Law), one of the basic laws of circuit analysis.
How to upload code to ESP8266 using the Arduino IDE and a Serial-USB converter.
This post briefly explains what is the ESP8266, a very cheap SoC currently used in many IoT applications.
How to use the ULN2803A IC to control a DC motor, using an Arduino board.
This post describes some conceptual errors with voltage sources, that arise from the definition of voltage source and short circuit.
Following the previous post describing the HC-06 module, this one shows how to use it to build a simple program to toggle the debugging LED of an Arduino board, using Bluetooth. This tutorial assumes the use of the HC-06 integrated in the baseboard described in the previous post.
This post describes the HC-06 Bluetooth module and shows a simple app to turn on and off a lamp with an Arduino board.
This post explains some basic calculations with resistors and voltage dividers.
This post lists some cheap options for power supplies to use in electronic and embedded systems projects.