Articles
IoT マンション電流測定システム
マンションの電流測れるIoTセンサー
IoT fingerprint reader
I recently replaced the RFID ring reader that I use to unlock my front door with an IoT fingerprint reader. An obvious advantage is that I risk losing my finger way less than a ring.
IoT LED 照明
スマホやタブレットから制御できるIoT LED 照明。自分で選んだ色を選択して光らすことができる。
Microk8s manage SSL certificates DNS entries
Microk8s provides settings to add a custom domain to its DNS settings. This article presents how to do so.
IoT キャッシュレス支払いシステム
社内にコーヒーサーバーを設置したとする。コーヒー代はもちろん飲んだ人が負担をするが、だれが何杯飲んだかを管理するための購買システムが必要になる。</p><p>そこで、簡単に使える購買システムを開発した。</p><p>使い方は、社員はあらかじめ入金をして、社員証をデバイスにかざしてプリペイドカードのようにコーヒーの元を購入することができる
IoT デバイス制御アプリ
IoTデバイスを盛業するために作ったWEBアプリ。パソコンでも、スマホでも使えます
Node.js testing for multiple environment variables
Some applications might require the same codebase to be tested with different sets of environment variables. This article proposes a simple way to do so.
A router out of a desktop PC with pfSense
My router needed to be replaced. However, instead of buying an off-the-shelf router, I decided to give pfSense a go and install it on a second-hand desktop computer.
Solving Kong latency problems in Kubernetes
Kong is a popular API gateway that can be used as a reverse proxy for clients to access back-end services. It can be run as a Docker container and, as such, can be deployed to Kubernetes. However, when doing so, requests might be severely impacted by unusually high latency. This can be solved by configuring the order in which Kong resolves DNS records.
GitLab Microk8s >1.24 certificate based integration
With newer versions of Microk8s, its GitLab integration changes slightly. Here are the key differences