digitalWrite() | Arduino Documentation
Apr 23, 2025 · Browse through hundreds of tutorials, datasheets, guides and other technical documentation to get started with Arduino products.
DigitalWrite example - Programming - Arduino Forum
Nov 13, 2013 · Hi All, I tried the digitalwrite example It says that I should see either 3.3V or 5V but instead I am seeing 500mV on an Arduino Uno. Any ideas where I have gone wrong? int ledPin = 13; …
pinMode() | Arduino Documentation
Feb 14, 2026 · Browse through hundreds of tutorials, datasheets, guides and other technical documentation to get started with Arduino products.
digitalWrite (pin, on ? HIGH : LOW); - Arduino Forum
Jul 30, 2020 · Keep in mind that there is an effort going on by the Arduino.cc developers to clean up the Arduino APIs. Code that makes assumptions about what HIGH and LOW are has made cleaning up …
Using digitalWrite (x, !digitalRead (x)) to toggle a ... - Arduino Forum
Mar 21, 2023 · Calling digitalWrite (10,HIGH); followed by digitalWrite (11,HIGH); will cause pin 10 to go HIGH several microseconds before pin 11, which may confuse certain time-sensitive external digital …
PWM : digitalWrite() vs. analogWrite() - Arduino Forum
Sep 17, 2012 · digitalWrite () turns a pin on or off. analogWrite () turns the pin on and off very fast, so that the duty cycle is what you specify (as a percentage of 255). They are not interchangeable.
Digital Pins | Arduino Documentation
Feb 9, 2026 · While the title of this document refers to digital pins, it is important to note that the vast majority of Arduino (ATmega) analog pins may be configured, and used, in exactly the same manner …
Getting Started with Arduino
Sep 26, 2025 · In this guide, we have touched upon some of the fundamentals of Arduino: hardware, software tools, what is the Arduino API, and a quick intro to it. This guide serves mainly as an …
DigitalWrite on Digital + Analog Pins - Arduino Forum
Dec 20, 2011 · I'd like to have an array or a function called ledPin [], which I can use with digitalWrite. My concern is with analog pins being A5 and A4 instead of just integers like the other pins.
analogRead() | Arduino Documentation
May 9, 2025 · Browse through hundreds of tutorials, datasheets, guides and other technical documentation to get started with Arduino products.