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4 external displays to use with Android Things: TM1637, Max7219, SSD1306, LCD 1602, LCD 2004

External displays are peripherals we can use with Android Things to show information. This article covers how to use 4 external display with Android Things. Displays are important when it is necessary to show information. When we develop smart devices based on Android Things usually it is necessary to show information to the user. Even if we could use RGB ...

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Use Kotlin to Build a Basic Android CRUD App

“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. Kotlin was recently given official Android support status by Google, but it remains difficult to understand for many developers. The best way to start is by creating ...

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Android Nearby: How to integrate Android and Android Things

This article explores how to use Android Nearby showing how to integrate Android and Android Things. There are several strategies we can use to integrate Android and Android Things, Android Nearby technology is one of them. Android provides a set of API that simplifies the data exchange between two different devices. One interesting aspect is the Android Nearby supports also ...

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Create a Basic Android App without an IDE

“I love writing authentication and authorization code.” ~ No Java Developer Ever. Tired of building the same login screens over and over? Try the Okta API for hosted authentication, authorization, and multi-factor auth. Virtually every Android tutorial uses Android Studio to create and develop an app. This isn’t great for learning since you don’t see how things work, namely The ...

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10 Arduino IDE alternative to start programming

When we start developing an Arduino project usually we tend to use the Arduino IDE. There are, anyway, several Arduino IDE alternative we should consider if we are not satisfied with the standard IDE. As we know, Arduino is one of the most popular prototyping board (with several alternatives) when it comes the time to develop an IoT project or ...

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Android touch not working? Not to worry.

It’s fairly rare to see a non-smartphone these days among the masses. Despite their numerous benefits, smartphones can sometimes be a PITA—especially the touchscreen. I have a (somewhat aged) Greentel Safari M1 which suffers from an occasional hiccup – the touchscreen simply refuses to work. No matter how hard I try, there’s no hint of a response – not a ...

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Build an SMS notification system with Android Things and Twilio

In this tutorial, we will cover how to build an SMS notification system with Android Things and Twilio. The main target of this tutorial is describing, step by step, how to implement an IoT system based on Android Things that send SMS notification through Twilio. We all know the importance of IoT as a disruptive technology that is revolutionizing several ...

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RxPreferences and Dagger

I have been rewriting a Settings (Preferences) activity for an old Android app. Since I was using RxJava in the app, I decided to try out RxPreferences which allows you to use SharedPreferences with a reactive wrapper. I found it quite good to use, although the blog post that accompanies it is a bit out of date. While I did’t ...

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