Laws of electronics: KCL (Kirchhoff’s Current Law)
Description of Kirchhoff’s Current Law (KCL).
Laws of electronics: KVL (Kirchhoff’s Voltage Law)
Description of KVL (Kirchhoff’s Voltage Law), one of the basic laws of circuit analysis.
ESP8266: uploading code from Arduino IDE
How to upload code to ESP8266 using the Arduino IDE and a Serial-USB converter.
ESP8266: An introduction
This post briefly explains what is the ESP8266, a very cheap SoC currently used in many IoT applications.
Using a ULN2803A to control a DC motor
How to use the ULN2803A IC to control a DC motor, using an Arduino board.
Shorting a voltage source conceptual error
This post describes some conceptual errors with voltage sources, that arise from the definition of voltage source and short circuit.
Toggling a LED with Arduino and HC-06
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.
Arduino Bluetooth with HC-06
This post describes the HC-06 Bluetooth module and shows a simple app to turn on and off a lamp with an Arduino board.
Resistors calculations and voltage divider
This post explains some basic calculations with resistors and voltage dividers.
Cheap power supplies
This post lists some cheap options for power supplies to use in electronic and embedded systems projects.