ADHD Focus Light
Two years ago, someone on HN shared an interesting ADHD hack: a tiny LED that blinks at 120 bpm and gradually slows to 60 bpm, supposedly helping your brain sync and calm down into focus mode. I found Qiaogun's implementation (ADHD_Blink) for M5StickC Plus, and adapted it for the newer M5StickC Plus2 with some tweaks - simpler 50% duty cycle flash, configurable ramp-down, auto sleep, etc. Honestly, I'm not sure if it actually works. I'll be trying it out myself to see. But the building process itself was quite fascinating. I used Claude Code for the entire implementation - from reading the…
ADHD Focus Light launched on January 8, 2026 with 16 votes, #777 of 14,584 launches that month and more than 90% of that year's launches.
In plain words
ADHD Focus Light is a firmware implementation for the M5StickC Plus2 that displays a blinking LED pattern, starting at 120 beats per minute and gradually slowing to 60 bpm, intended to help users enter a focused state. Designed for people with ADHD seeking alternative focus techniques, it features configurable ramp-down timing and auto-sleep functionality. The creator adapted an existing open-source implementation and built the entire project using AI assistance, though effectiveness remains unverified through personal testing.
written from the facts on this page · September 2026
From the sources
A red LED heartbeat blinker for M5StickC Plus2 to help people with ADHD improve focus and concentration - zonghaoyuan/adhd-focus-light
In the maker’s words, at launch
Two years ago, someone on HN shared an interesting ADHD hack: a tiny LED that blinks at 120 bpm and gradually slows to 60 bpm, supposedly helping your brain sync and calm down into focus mode. I found Qiaogun's implementation (ADHD_Blink) for M5StickC Plus, and adapted it for the newer M5StickC Plus2 with some tweaks…
Does a similar job
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The Focus ButtonAug 2026 · button.focusbear.io · ▲15Hardware device for ADHDers that blocks digital distractions
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Source: Show HN post ↗ · launch text quoted in part
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