Feeding analog voltages to digital microcontroller inputs already got us some interesting effects, but what about leaving an input pin entirely disconnected? All of a sudden microcontrollers become sensitive to the weather outside, and the clothes we wear—or any other source of electrostatic. The easy way to deal with this is to always ensure that […]
BIVBlog #49: Schmitt Triggers, and Analog Voltages on Microcontroller Digital Input Pins
While digital inputs on microcontrollers are meant to be fed digital input signals, what will actually happen if we feed them a real world input voltage? And what is a Schmitt Trigger, and what is it good for anyway?
BIVBlog #48: Microcontroller Input and Portability Basics
Reading basic digital input with a microcontroller is fairly straightforward—at least as long as you really keep things simple and don’t do some of the advanced stuff following in the next few episodes.