I built an ESP-powered internet-outage alarm I can’t miss for just $5

Internet outages are one of the most silent reasons why everything around you can suddenly stop working, and you won’t figure out why until you either walk over to your router or check the connection on your PC. And more than the buffering or disconnects, it’s the uncertainty. Your video call drops, and you’re left wondering whether your router, ISP, or that Ethernet cable you’ve been meaning to replace is at fault.

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