Useful, but frustrating USB remote doorbell
Added 2025-04-18 18:13:37 +0000 UTCThis is a very capable little unit, but is hobbled by the use of long musical sections in place of simple short chimes.
But it has many uses, including pairing with a matching wireless PIR sensor to act as a basic alarm to detect people (or trapped animals) in an outdoor shed.
Comments
2 antennas maybe because they are tuned to different frequencies, one one will actively do anything if their is another one resonant to the frequency in use. The board maybe capable of working on both common frequencies used around the world. 433MHz is used in most parts but others use 315MHz. Visually they will only have a small difference if any visually.
Dennis
2025-04-19 12:39:22 +0000 UTCVery cool. Thanks Big Clive.
Dave Frederick AKA @amorphuc
2025-04-19 04:34:04 +0000 UTC
