QBell

What it does

QBell is a scalable and accessible Smart Doorbell System that is powered by bespoke QR codes. QBell can instantly upgrade any home, business or office location with a Smart Doorbell interface, without the requirement for installation, internet, or wires.

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  QBell2022 · ▲4

  On a mission to upgrade the world's front doors.

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  I built an app to use a QR code as my doorbell2024 · dingdongdoorbell.com · ▲140

  I didn’t have a doorbell before (multiple reasons) and my house feels unwelcoming without one. So I built a doorbell app that uses a QR code - visitors scan the QR code to ring the doorbell and I get notified on my phone. Here is an example of the QR code I have on my door. You can scan it and say hello: https://www.thebacklog.net/img/2024/10/show-hn.png This was also a great excuse to build my first app for Android and iPhone. I’d love to get some feedback before I spend more time polishing the app. Please try it out and feel free to ask me any questions! No…

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  SacnbellJan 2026 · scanbell.netlify.app · ▲1

  A QR-powered smart doorbell with one-way video calling

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  Smart QR DoorbellJul 2026 · play.google.com · ▲3

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  Square QR2022 · ▲216

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  QR Gateway2023 · qrgateway.com · ▲66

  Create, manage,track and design QR codes your way

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  Hey HN, I've been working on https://pornpen.ai, a site for generating adult images. Please only visit the site if you are 18+ and willing to look at NSFW images. This site is an experiment using newer text-to-image models. I explicitly removed the ability to specify custom text to avoid harmful imagery from being generated. New tags will be added once the prompt-engineering algorithm is fine-tuned further. If the servers are overloaded, take a look at the feed and search pages to look through past results. For comments/suggestions/feedback please visit…

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