Sérgio Sena

Electronics Design Craftsmanship

LoRaWAN, Long Range Low Power Wireless for the “Things”

In the last post I spoke about the newish LoRa modulation that is taking the LPWAN (low-power wide area network) by storm. In this post I describe LoRaWAN, a protocol created by the LoRa Alliance that uses LoRa as its transport medium…. Continue Reading →

LoRa Wireless Modulation for LPWAN

For a while I have been using this wireless technology to make my remote environmental sensors communicate to a central connected gateway. With great success I have to say, as I wasn’t expecting the quality of service that LoRa modulation provides…. Continue Reading →

TVS Diode Overvoltage Test

In a recent project I had to use a Transient Voltage Suppressor Diode (TVS) to protect my power supply input against any disturbance from mains. The unit was powered by a 18V power supply, but in order to pass certification,… Continue Reading →

How to Solve MIDI problems, part 2

Following on previous post on MIDI communication problems, I am going to talk now about external conditions that may affect hardware and thus make a device behave erratically or not at all. Apart from having an easy fix problem like a broken… Continue Reading →

How to Solve MIDI problems, part 1

Thank you very much for all the feedback about the last post and consequential survey that some of you have replied, much appreciated.   Following on what was being discussed in the last post, the feedback I’ve got from the… Continue Reading →

The Four Most Common Problems With MIDI Systems And How to Solve Them

Since MIDI was developed, connecting any music gear via this system has proven to be one of the most amazing things the community has witnessed. The myriad of devices that have been possible to connect and be controlled, it is remarkable! Imagine that… Continue Reading →

First Post

Welcome to my blog, this is my first post. I like to talk about Electronics Engineering, its applications in the real world and also give Tips & Tricks on how to do better electronic designs, and perhaps share some circuit making. Also,… Continue Reading →

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