[SOLVED] Arduino Nano with SIM800L and DHT11 on batteries


I am trying to run a project on batteries with NANO and gsm sim800l. The purpose of the project is to display the temperature in a room with blynk (History graph). I want the arduino nano to sleep most of the time and sim800L to be powered off and only 2 to 3 times a day arduino will wake up power on the sim800l and send the temperature.

I tried with some sleep options in arduino but i failed. Can you please advice?

Hello and welcome to the Blynk Forum.

We havenโ€™t a clue what you have tried or how/why it failed, so not easy to advise.

Have you tried searching this forum for other battery powered projects, topics, ideas, etc?


Also, show us the sketch you have so farโ€ฆ Please format it as required for proper veiwing. Thanks