Learn basic electrical safety, recognize AC and DC sources, learn scale of voltage units.
Caution: this lesson involves measuring dangerous voltages from the AC wall outlets. Please observe meter settings carefully and avoid touching any exposed metal.
Our typical sensor circuits will all use DC supply voltages ranging from 3.3 to 12V. Our typical actuator circuits will use DC supply voltages from 5V to 12V. Many electronic components have tightly specified supply voltage ranges and will malfunction or be destroyed outside that range.