Complete circuit to control two 7-segment displays from a PIC

Display a 2-digit number using 7-segment displays

09-30-2016 Alex 0

As we’ve seen in the previous tutorial, it’s pretty easy to display a single digit number on a seven segment display. If you want to display two digits though, you’ll quickly see it’s a bit more complicated. Today we’ll learn how to multiplex two 7-segment displays in order to display a 2-digit number.

7 segment display

Interfacing a 7 segment display with a PIC16F microcontroller

09-21-2016 Alex 0

One of the key elements in embedded systems is the user interface. A good user interface will feature visual elements to communicate with the user, such as LEDs or a screen for example. Seven segment displays are widely used in electronic devices, as they can display information in an easy way. We find 7 segment displays everywhere in our homes: our alarm clocks, microwave ovens or even the screens of some devices. Let’s see how to use this component in an embedded system! We’ll start simple, with a single 7 segment display.

How to build a simple 5V power supply on a breadboard

09-07-2016 Alex 0

When I build a circuit on a breadboard, the first problem I always have is to create the 5V that will power the components. Of course there are a lot of pre-made power-supplies that you fit perfectly on the power rails of the breadboard, but I wanted something that I built myself and I can use with all my circuits. In this article I will present the power supply I came up with, as well as a step by step explanation of the circuit.

PIC microcontrollers

Starting PIC microcontroller programming – Part 1/2 (Setting up the tools)

08-29-2016 Alex 0

In this series of tutorials we’re going to learn how to create our first embedded program for PIC microcontrollers. They are built by Microchip, and massively used in the industry. There are several other big actors in the world of microcontroller, such as Atmel with their AVR products (although they’ve recently been bought by Microchip), NXP, Freescale and much more. I decided to present Microchip’s microcontrollers because they are one of the most used brand of microcontrollers, and because the tools are easy to set up. They’re also relatively cheap and available on Windows, Mac and Linux, making it accessible to most people.

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