OH man every time I see a company produce such a small board with all these capabilities I wonder how come we have to pay $60 to $120 a sensor when this little $16 device can do almost anything? [image] Seeed Studio XIAO nRF54L15 Sense XIAO nRF54L15 Sense is a powerful yet compact devel…

[image] ronv42: how come we have to pay $60 to $120 a sensor when this little $16 device can do almost anything? Beginning with engineering, just about everything in the product pipeline from conception to market costs money.

[image] aaiyar: just about everything in the product pipeline from conception to market costs money. My (wise?) uncle once told me that my time is worth money as well and that I should consider my hourly wage when deciding whether to shade tree a job, or just pay someone else to do it. Now, …

I like the M5Stack NanoC6 -- faster, cheaper, more flash memory than the XIAO. Used it for a Zigbee LIDAR "is the car in the garage or not" sensor: [image] DIY: ESP32-C6 based Zigbee 4 meter distance sensor UPDATED puzzle_pieceCustom Apps Photos of latest vers…

How stable is your method? Like your vehicle not present vs you walking by it, does that count as vehicle home? This is cool. I've been using esp32s3 for its esp-sr local voice and its almost replaced alexa.

I have 2 of these units, and they work very well at rejecting false positives. For my purposes, a motion detector would not work, too many people traipse through the garage (there's a refrigerator near the cars). These units just need to make a coarse measurement (e.g., "closer or farther than the …

Who is up for building their own sensor?

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John_Land August 27, 2026, 11:37pm 4

I like the M5Stack NanoC6 -- faster, cheaper, more flash memory than the XIAO. Used it for a Zigbee LIDAR "is the car in the garage or not" sensor: