Hackaday Links: October 17, 2026

While Hackaday doesn’t maintain a crime blotter, we couldn’t help but start this week’s post off with a bit of civil disobedience — a retired professor from the University of Pennsylvania was arrested earlier this week for standing in front of a delivery robot....

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Off-Grid Refrigeration Using Fire and Salt

Refrigeration has been a challenge for humanity since the start. Ancient civilizations in dry climates like Persia and Egypt could use evaporative cooling on a large scale with specialized architecture, and with easy access to electricity modern civilization can cool...

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Show HN: WhatsApp MCP running free on Cloudflare

I wanted my humble Claude on mobile to access my WhatsApp messages but the only options I could find either required WhatsApp Business or an actual server to run Baileys on.I wanted to run it for free on ClaudeFlare and with my personal WhatsApp account, so I built...

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51 Blog Posts To Learn About Hacker

Let's learn about Hacker via these 51 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. An individual who uses their technical skills to overcome a...

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Total Security 365