Recently, we published an entry-level Arduino project with ... twelve (in place of thirty-two)! The LED segments of the display require current-limiting resistors when powered from a 5 V logic pin.

LOW); // set the LED on The Arduino Micro is closely related to the Leonardo, with some small difference. Each led in both is connected in series with a 1kΩ resistor to limit current. One ...

You usually need a high precision resistor (1% or better) in series with the inductor, a function generator to put a signal through ... you pull it off with an Arduino and an LM339 quad comparator.

This part number (and ofcourse the LED type) is not very critical. If you want to use a bi-polar transistor, don’t forget to add a resistor (~1KΩ ) between Arduino D10 and the base terminal of the ...

Messing around with Arduino can lead to some fun projects ... t work right and also might short out and create a fire risk. Resistor values are measured in Ohms, which indicates electrical ...

Let it hit your red LED and you’ve lost a point ... Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer.