The objective of this post is to explain the architecture of a simple temperature logger using the ESP8266 and a web server deployed on the cloud.
This post describes one of the basic laws of circuit analysis, more precisely KCL (Kirchhoff’s Current Law), which states that the the sum of the currents leaving and entering a node is zero.
This post describes one of the basic laws of circuit analysis, more precisely KVL (Kirchhoff’s Voltage Law), which states that the sum of all voltages in a closed loop of a circuit are equal to zero.
This post explains how to upload code to ESP8266 using the Arduino IDE and a Serial-USB converter. We assume the use of an ESP-01 board, one of the cheapest and most used boards based on the device.
This post briefly explains what is the ESP8266, a very cheap SoC currently used in many IoT applications.
This post explains how to use the ULN2803A IC to control a DC motor, using an Arduino board.Continue reading “Using a ULN2803A to control a DC motor”
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.