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Browser-based prompt to game html scratchpad

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Hi HN,

We’ve been prototyping a short-duration wearable patch designed for field or emergency response situations where quick physiological monitoring is useful. This was built in a few weeks using a collaborative hardware/firmware build environment that let us iterate logic visually before refining the firmware implementation. The goal of this early version is: can we build a small adhesive patch that activates immediately, measures pulse + SpO₂, and provides clear on-device feedback for ~30–180 minutes?

This is the current prototype: - Adhesive-backed strip/oval form factor - Reflective pulse oximeter sensor - ~30 min to 3+ hour runtime (depending on configuration) - LED indicators for status - Audible alerts for abnormal readings - Immediate activation when adhesive backing is removed (early units used a button) - 5-unit prototype run using off-the-shelf components

The device gives local feedback only (light + sound. There iso cloud connectivity in this iteration.

Green LED > functioning + vitals within threshold Red LED + audio > threshold exceeded or signal quality issue

We focused on: a) Fast iteration on firmware thresholds b) Basic motion tolerance testing c) Power management for short operational windows d) Adhesive-trigger activation mechanism e) Rapid hardware + firmware iteration cycle

Would love feedback from anyone who’s worked on wearable pulse oximetry, motion artifact reduction, short-duration medical device validation, adhesive-based wearables

Lemme know if anyone has technical questions.

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Article URL: https://old.reddit.com/r/homeassistant/comments/1r8ftc0/i_control_my_home_assistant_over_lora_radio_when/

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