AA Battery Used to Power AVR Microcontroller

The project illustrates how it managed to power AVR microcontroller from a single AA battery with simple circuitry which is also driven by the AVR microcontroller.

The method to power a microcontroller from a single AA battery will work fine as long as the microcontroller keeps on generating PWM pulses that will adjust the duty cycle with respect to the current voltage. A MOSFET is used by the circuit which increments the efficiency to 73 percent as it makes the possibility of powering more current-consuming applications.

A DC-DC converter control is performed by the AVR MCU since industrial devices use DC-DC converters to increase voltages such as those from 1.5V to 5V. The converter was driven by PWM generated by ATtiny13 in order to occupy one timer, since no dedicated PWM control chip was used. To emit a fixed PWM signal on one of the microcontroller pins, the ATtiny was programmed with a code.

A pushbutton is available in parallel with the transistor since a certain voltage is needed to get the controller running. The controller is the actual microcontroller that is powered by the generated power of the DC-DC converter.

Rest of the project