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Results tagged with wireless
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user 2881
Wireless refers to the technology allowing the transfer of information between two points that are not physically connected.
2
votes
Understanding NRF24L01 specifications
Yes. They call it a band, because the nRF24L01 can operate on frequencies from 2.400GHz to 2.525GHz
It's like talking slower to someone. It makes it easier to distinguish the signal from the noise.
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- 11.3k
1
vote
Remote temperature and humidity sensor with long battery life
Sleep mode of a Zigbee is around 5uA. Power-down mode of an arduino is about the same. You can power the DHT22 via one of the digital pins, so it only uses power if you need it (though I thing you nee …
- 11.3k
4
votes
Just sanity-checking a concept... poor man's self-monitored alarm system
NRF24L01+ for communication. Extreme low power if not sending. Detects packet loss, and automatically resend the packet.
You would however need a small arduino board at the sensor, to read the senso …
- 11.3k