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[IoT] Some demonstrations about controlling IoT devices
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[IoT] Some demonstrations about controlling IoT devices

1. IntroductionIn this blog, we will demonstrate how to use some IoT devices such as Relay, LCD, and Servo Motor which combined with Raspberry Pi. 2. Demonstrations2.1. Relay2.1.1. Relay with LEDWork
Lionel
[Azure IoT] How to control your Air Conditioner by using Azure IoT Hub
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[Azure IoT] How to control your Air Conditioner by using Azure IoT Hub

1. IntroductionBefore coming to this blog, you should read the "Introduction to Azure IoT for Beginners" blog first to understand the basic knowledges about Azure IoT, as well as how to communicate be
Lionel
Useful tips when developing Ruby apps
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Useful tips when developing Ruby apps

Hi everyone, bellow are some advises for developers developing Ruby / Rails apps for newbie. Avoid too much logic in controllers From my view, Ruby is mainly focus on MVC, and one common mistake that
Tinker
Using Cookiecutter to create project boilerplate
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Using Cookiecutter to create project boilerplate

What is Cookiecutter ? Cookiecutter is a Command Line Interface tool to create an application boilerplate from a template. It uses a templating system Jinja2 to replace or customize folder and file na
Sage Huynh
[Azure IoT] How to create a simple solution to make your home safer with IoT
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[Azure IoT] How to create a simple solution to make your home safer with IoT

1. IntroductionBefore coming to this blog, you should read the "Introduction to Azure IoT for Beginners" blog first to understand the basic knowledges about Azure IoT, as well as how to communicate be
Lionel
開発によくあるリスク
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開発によくあるリスク

どんなプロジェクトであっても、リスクが伴います。 プロジェクトのリスクは当然のことですが、回避できないわけではありません。 以下は、プロジェクト中に発生する可能性が高い一般的なリスクのリストです。 要件と優先順位の変更プロジェクトの期間中には、ある時点にかならず仕様の変更と更新を受け取ることになります。顧客が特定の機能について気が変わって、要件、コンセプト、またはロジックが変更されることがあります
AKI Nguyen
Autoscale AWS ECS
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Autoscale AWS ECS

The key aspects of maintaining a container orchestration platform is to configure autoscaling of the services running on it. Here this blog is my experiences on that. Setup: Before I explain to you h
Sage Huynh
SSO with AWS Cognito
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SSO with AWS Cognito

What is SSO? SSO (single sign-on) in the enterprise refers to the ability for employees to log in just one time with one set of credentials to get access to all corporate apps, websites and data for w
Sage Huynh
Pagination with dynamodb
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Pagination with dynamodb

Out of the box pagination DynamoDB provides Amazon DynamoDB documentation says that DynamoDB paginates the results from scan/query operations. With pagination, the scan results are divided into pages
Sage Huynh
Better null-check with Safe Navigation operator in Ruby
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Better null-check with Safe Navigation operator in Ruby

If you are familiar with the Optional Chain operator (?.) of JavaScript, then you cannot miss the Safe Navigation Operator (&.) of Ruby. Now let's dig into it! What is a Safe navigation operator
SKYE Dang