Andreas Grün

You use limit switches to switch off a motor if it reaches one of its two end positions. Even if you build a microprocessor-based motor controller, you should switch off a motor with hardware by building a safety interlock. Such a circuit works by inhibiting movement in one...

Using a PN-junction diode for temperature measurement usually depends on its 2 mV/K temperature coefficient. Conventionally, you must amplify and digitize this voltage with an ADC before you can use the value in a microcontroller. Less well-known is the fact that the...