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HN Hacker News · · Science & Space

Europe's electric car sales jump 49% as global EV sales grow

54 points and 44 comments on Hacker News.

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Robotics & DIY Electronics

Obstacle Avoiding Robot With Arduino and an Ultrasonic Sensor (HC-SR04): Full Tutorial

Turn a two-wheel robot car into an obstacle-avoiding robot with an HC-SR04 ultrasonic sensor and Arduino: wiring, distance code, decision logic and upgrades with a servo scanner.

3 min read · Updated Nov 10, 2026Internet & Apps

Is Outlook down? What to do while Microsoft fixes it

Outlook is down for many people. News outlets report Microsoft is fixing servers that failed health checks. Here is what to do while you wait.

8 min read · Updated Nov 13, 2026Robotics & DIY Electronics

What is an ESP32, and what can it do for you?

The ESP32 is a small, cheap board with Wi-Fi and Bluetooth built in. Here is what it is, what it can do, and your first project.

10 min read · Updated Nov 13, 2026