I made a home automation system using Attiny 85 and the Hc-05 Bluetooth module. Working fine.
But now I face a new problem when my app is in the background for more than 5 minutes after that hc 05 Bluetooth module is off.
If I turn off and on the system, Bluetooth is automatically in normal mood. Here I use a mobile charger to power the system.
when I use Arduino UNO's 5V and GND pin to power the system, this problem does not happen.
Is this problem happened because of the power supply?
IF yes, then how to power the system? Please Help 