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.
This post lists some cheap options for power supplies to use in electronic and embedded systems projects.
When developing for embedded systems, having knowledge about electronics gives much more freedom on what we can create. Instead of using only shields or demonstration boards, we can develop custom solutions for our needs, allowing for a greater efficiency and a lower cost.
This post explains some very basic principles about electronics, namely DC voltage sources and resistors. I’ll try to make some posts about more basic electronics every once in a while, in order to complement the other posts about embedded systems.
This post describes a prototype of a smart medication dispenser, created with an Arduino as the controlling unit. The hardware platform and the software to support all the functionalities were created from scratch. Some of the functionalities include the possibility to connect the dispenser to a smartphone using HC-06 bluetooth module, or to communicate with a remote server through the internet, using ESP8266 Wi-Fi module.
This tutorial explains how to create an internal representation of date and time in a microcontroller, using interruptions.