This simple instructable will show you how to make a nightlight out of a translucent container, a bottle of tonic water, an Arduino, and ultraviolet LEDs. If you’ve ever played with a black light, you’ve noticed that some substances glow brightly under these lights. In this case, we’ll be using tonic water because it contains …
Ultraviolet nightlight, ingredients and setup Using Arduino Read More »
In this tutorial, eight LEDs are interfaced to the Arduino Uno board. This is not complicated – it is just like interfacing a single LED to the Arduino as done in tutorial 3, but eight times over. A program is then loaded to the Arduino that will turn the eight LEDs into a “Knight rider” …
Designing a custom plate for the Arduino Robot, adding jumbo LEDs and displaying readings from an ultrasonic distance sensor to the LCD. My previous post on the Arduino Robot described how I took the Runaway Robot sketch and modified it work with the PING ultrasonic distance sensor. This post is still based around the same example sketch, …
Ever thought of controlling any of your electronic devices with your smart phone? How about a robot or any other device? Wouldn’t it be cool to control them with your smartphone? Here is a simple tutorial for interfacing an Android Smartphone with Arduino via Bluetooth! Required Materials Hardware Bluetooth Module HC 05/06 Arduino & Battery (with cable) …
Bluetooth Basics: How to Control an LED Using a SmartPhone and Arduino Read More »
I built this a short while ago as an idea to use in a primary classroom setting. Poster displays are often used by primary teachers wanting to control the noise levels in their classrooms but I wanted to add technology to make it dynamic and responsive. The motivation for this came after seeing the Adafruit …
VU Meter – LED Noise-o-Meter for Classrooms Using Arduino Read More »
Let’s learn to adjust an LED’s brightness using one of the Arduino’s analog outputs. You’ve probably already learned how to use Arduino’s digital i/o pins to send HIGH and LOW signals to an LED, but some of these pins are capable of simulating a signal somewhere in between. These pins are labeled on the Arduino Uno …
Fading LED With Arduino Analog Output in Tinkercad Read More »
A Chaser Circuit consists of a clocked IC or other electronic unit like an Arduino that drives an array of LEDs in such a way that individual LEDs (or small groups of LEDs) turn on and off in a predetermined and repeating sequence, thus producing a visually attractive display in which one or more ripples …
In this instructables you will learn how to wire 4 LED’S and make them flash 10 times. This is a great Starter project!! what you will need… 1: arduino (I am using an Duemilanove) 1: breadboard 4: LED’s 10-15: jumper wires 3: resistors Step 1: Adding the LED’s and Resistors1 First put the LED’s on …
After making a 8X10 matrix a lot of people asked me about expanding the matrix to some thing bigger, and some wanted to write stuff to the matrix via a PC, so one day I looked at a pile of LEDs that I had leftover from a LED cube projected and I decided to make …
Methods: Use a TTL HI output for the RS232 GND: Steve Walz of armory.com says “Use a TTL HI output for the RS232 *GROUND*!! Then you get +/-5VDC levels to fake out the RS232. When TTL-GND goes HI, then a TTL-XMT LO looks like -5VDC and a “mark”. Even sign problems go away in hardware! When TTL-GND …
