Powering Your Electronic Projects | tecno4 | Scoop.it
Electronic devices like Arduino’s require “logic level” voltages to function. These “logic level” voltages come in two flavors – the traditional 5 volts DC that is also known as “TTL level” voltage and the power-saving 3.3 volt DC supply that is used in many low-powered devices. In both cases the voltages need to be regulated fairly precisely to avoid damaging components.