ADHD_Blink

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 original codebase, to modifying the firmware, to flashing the device. There's something surreal about an AI having full control over a physical piece of hardware. It made me wonder: in the future, could AI-connected devices dynamically rewrite their own

I've developed an experimental ESP32 project that simulates a heartbeat pattern. But I don't have a heart rate sensor, I used my normal resting heart rate as a basis for the simulation. The project utilizes an ESP32 to create a LED blink pattern that represents a heartbeat, starting at a faster rate and gradually slowing down to a resting rate. Here's the link to the project: https://github.com/Qiaogun/ADHD_Blink

I've developed an experimental ESP32 project that simulates a heartbeat pattern. But I don't have a heart rate sensor, I used my normal resting heart rate as a basis for the simulation. The project utilizes an ESP32 to create a LED blink pattern that represents a heartbeat, starting at a faster rate and gradually slowing down to a resting rate. Here's the link to the project: https://github.com/Qiaogun/ADHD_Blink