3 ms·
Nordic's nRF24L01 was all the rage before the ESP came along. It's 2.4GHz, but you don't have to worry about following the Bluetooth Smart protocol - you can d
by swamp40 10y ago
Nordic's nRF24L01 was all the rage before the ESP came along. It's 2.4GHz, but you don't have to worry about following the Bluetooth Smart protocol - you can do what you want.
Very low power. There are $2-$3 boards everywhere.
- cuonic 10y agoAgreed, I use NR24L01's for multiple low power arduino sensors that send temperature data every 10 minutes to a central hub: a raspberry Pi connected to the internet. The batteries on the sensors last for up to a year.