18650

Battery Powered Arduino DS18B20 Temperature Sensor

18650 battery powered Arduino DS18B20 temperature sensor would lost on average 2 years without to re-charge or replace the battery. It is best to use 3.3v Arduino Pro Mini with lower clock speed to conserve battery. To optimize battery life further you can remove power LED and status led connected to Arduino pin 13. 18650 battery powered temperature sensors are feed power to Arduino mini through raw pin utilising onboard voltage regulator. I have these temperature sensors running over 16…

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Connect Arduino with nRF24L01 Radio

The nRF24L01+ transceiver module uses the 2.4GHz band and it can operate with baud rates from 250kbps up-to 2Mbps true ultra low power and low cost transceiver. nRF24L01+ communicate with Arduino via SPI interface and it consumes around 12mA with operating voltage from 1.9v to 3.3v. nRF24L01+ can communicate with other nRF transceiver modules and it can reach 100m in clear line of sight with lower baud rate. In this article I will explain you how to connect nRF24L01 with…

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