Here is a neat DIY process by PopSci guys at instructables on how to take 1.5V to 5V. The process explains the technique of producing 5V DC from a single 1.5V DC AA battery.
For the conversion, you need MAX1674 IC, which is a step-up converter capable of taking in voltages as low as 0.7V and give out digital circuit stirring 5V. Well, high current projects engaging motors won’t be able to real the benefits as MAX1674 offers a steady-state output current between 180-420 mA.
Check out the full details.
