I need a circuit which is actually a battery tester and produce alarm/buzzer on battery low voltage and also give an sms alert on mobile that your battery is dieing...Can anyone help me
I need a circuit which is actually a battery tester and produce alarm/buzzer on battery low voltage and also give an sms alert on mobile that your battery is dieing...Can anyone help me
I suppose you will use an MCU right?
You need to measure the voltage of the battery with an A/D converter. While this voltage is smaller than a fixed value, you will drive the buzzer to produce sound. In the transition between normal and low battery voltage, you will send an sms.