Becky Stern shows you how to use digital and analog inputs when building Arduino circuits, including controlling LEDs using pushbuttons and potentiometers.

I'm trying to dim LED strips, approximately 30ft in length, with hand controls. I've found that regular potentiometers (those sold by Adafruit) max out at about 0.2 W. For whatever reason, the Red ...

Analog variable frequency filters require the use of variable passive components. The higher the slope of the filter, the greater the number of needed variable passive components. These elements are ...

For example, the AD8111 (16 inputs, eight outputs) allows you to mix 16 levels in eight weights, resulting in a 16 8 -step (2 32 -step) potentiometer—an accuracy that’s beyond current needs.

Analog circuits today are typically biased from ±5 V to ±18 V. But the trend is toward lower voltages. For this reason, many components are designed to operate primarily in ±5-V systems.