BME280 Temp / Humidity / Pressure
I²C / SPI sensor with ±0.5 °C, ±3 %RH and ±1 hPa accuracy — plugs straight int
10.525 GHz microwave Doppler sensor detecting moving targets through plastic and thin walls, unaffected by light or temperature. About 5–8 m range with adjustable sensitivity.
Motion yes/no only — no distance or speed. There is no firmware page for it; wire its 3.3 V output to a GPIO yourself.
| Frequency | 10.525 GHz Doppler |
|---|---|
| Output | 3.3 V digital |
| Range | About 5–8 m, adjustable |
| Supply | 5 V, ~30 mA |
Owners talk about wiring, quirks and fixes here — ask anything.
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