• As far as punctuation goes, the exclamation mark is perhaps the most eye-catching of the bunch. • That’s why [Conrad Farnsworth] thought this form would be perfectfor his Home Assistant notifier build. • The key to this build is the large bi-color printed housing in the shape of an exclamation mark. • It makes for an attractive wall-hanging, but it also perfectly serves the purpose [Conrad] had in mind. • Inside the enclosure is an ESP32, hooked up to a string of 16×8 LED matrixes which are commanded over I2C. • These sit behind a white panel in the enclosure to nicely diffuse the light and make their output more readable.
Article Summaries:
- Summary
Conrad Farnsworth has created a Home Assistant‑compatible notification display shaped like an exclamation mark. The device houses an ESP32 that drives a 16 × 8 LED matrix array via I²C, with a white diffuser panel to improve readability. Notifications such as mailbox or driveway vehicle detection are shown on the LEDs, while a solenoid‑driven bell provides audible alerts. The unit’s bi‑color housing makes it an eye‑catching wall‑mounted accessory. Farnsworth notes the build’s practicality for daily use and suggests similar projects, like smart mirrors, for those seeking visible notification displays.
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