DESCRIPTION

18650 battery powered Arduino DS18B20 temperature sensor would lost many years without to re-charge or replace the battery, for temperature sensors its best to use 3.3v Arduino Pro Mini with lower clock speed to conserve battery. To optimize further i have removed power LED and status led connected to Arduino mini pin 13, then feed power to Arduino mini through raw pin with 18650 battery. i have these sensors running over 16 months now and battery is still 96%. It is very low power arduino with DS18B20 temperature sensor.

See below the real picture of my One Wire ds18b20 temperature sensor running on 18650 battery for over 16 month and battery still at 96%.

TECHNICAL DETAILS / COMPONENTS

Arduino Mini Pro 3.3v

DS18B20

nRF24L01

LEARN / TOPIC / BUILD INSTRUCTIONS

For Arduino Sketch and other build information please visit us at http://www.pihome.eu