IoT Archives - App Code Labs

June 5, 2019

Using a Software Defined Radio to Debug LoRa Communication Problems

As part of my ongoing “Introduction to IoT” series, in this article you’ll learn how to use a cheap software defined radio (SDR) to diagnose problems between different LoRa radios and drivers. SDR can be invaluable when diagnosing LoRa link problems, especially when using new and untested hardware and software. What follows is an account of the many problems I...

Electronics/ESP32/Hardware/IoT/LoRa/macOS

May 20, 2019

Introduction to IoT: Building a Budget, Single-Channel LoRa to MQTT Gateway

You don’t need an expensive LoRaWAN gateway to get started with IoT using LoRa. In this tutorial you’ll learn how to build a simple, single-channel gateway so you can experiment with a LoRa to MQTT gateway, and try out the unique properties of LoRa before investing any significant money into it.

Arduino/ESP32/Hardware/IoT/Linux/LoRa/macOS/MQTT/Raspberry Pi

May 15, 2019

Introduction to IoT: Everything You Need to Know About LoRa and LoRaWAN

You can’t explore the world of IoT for long without hearing about LoRa and LoRaWAN. These technologies have been growing in popularity for a couple of years now, but what exactly are they and how can you use them?

Arduino/Electronics/ESP8266/Hardware/I/O/IoT/LoRa/MQTT

January 15, 2019

Introduction to IoT: How to Send MQTT Messages From iOS Using Swift

Mobile is the natural way to control IoT devices. But even controlling a simple on/off switch requires a fair amount of code, and it can be hard to figure out where to start. This tutorial shows you how to build a simple MQTT publisher client app using Swift on iOS. It goes without saying that mobile and IoT should fit...

Electronics/ESP8266/macOS/MQTT/Swift

January 9, 2019

Introduction to IoT: Build a Simple MQTT Subscriber Using ESP8266

Do you want to build a simple IoT device using ESP8266? With built-in WiFi, it’s a fantastic platform for IoT and home automation. In this tutorial you’ll learn how easy it is to build an MQTT subscriber that you can control with messages sent from anywhere on your network. In the previous article in this IoT series, you learned how...

Arduino/Electronics/ESP8266/IoT/MQTT

January 7, 2019

Introduction to IoT: Build an MQTT Server Using Raspberry Pi

In the fast-changing world of IoT, there’s no such thing as a universal standard. But over the last few years, MQTT has started to establish itself as the de facto messaging protocol. In this tutorial you’ll learn how to set up an MQTT message server in just a few minutes using a Raspberry Pi. MQTT is a lightweight and simple...

IoT/Linux/MQTT/Raspberry Pi

Category: IoT