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Laws of electronics: KCL (Kirchhoff’s Current Law)

Misc / 1 Comment

Description of Kirchhoff’s Current Law (KCL).

Laws of electronics: KVL (Kirchhoff’s Voltage Law)

Misc / 2 Comments

Description of KVL (Kirchhoff’s Voltage Law), one of the basic laws of circuit analysis.

ESP8266: uploading code from Arduino IDE

ESP8266 / 71 Comments

How to upload code to ESP8266 using the Arduino IDE and a Serial-USB converter.

ESP8266: An introduction

ESP8266 / 5 Comments

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

Misc / 3 Comments

How to use the ULN2803A IC to control a DC motor, using an Arduino board.

Shorting a voltage source conceptual error

Electronics

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

Electronics, Microcontrollers / 2 Comments

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

Electronics, Microcontrollers / 1 Comment

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

Misc / 2 Comments

This post explains some basic calculations with resistors and voltage dividers.

Cheap power supplies

Misc / 3 Comments

This post lists some cheap options for power supplies to use in electronic and embedded systems projects.

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