In this tutorial you will learn how to communicate with a computer using a MAX3323 single channel RS-232 driver/receiver and a software serial connection on the Arduino. A general purpose software serial tutorial can be found here. Materials needed: Computer with a terminal program installed (ie. HyperTerminal or RealTerm on the PC, Zterm on Mac) […]
I just brought a new lamp and after a week, I’m tired of looking at it randomly change colours between red, blue, green. What can you expect from a cheap lamp brought at 5$ . Looking at the lamp I realized that I could make a Gmail lamp, that shines green every time I got
Arduino (Optic Fibre) Continue Reading
This article describes a simple spectrum analyser for the 2.4 to 2.5 GHz Wi-Fi band. It’s based on the Cypress CYWM6935 Wireless Radio Module. Although the manufacturer doesn’t recommend it for new commercial projects, it is still widely available from eBay suppliers and Farnell here in the UK. The module has 1 MHz channel spacing
Arduino 2.4 GHz Spectrum Analyser Continue Reading
This project uses an Arduino, a pair of speakers, and a laser pointer to create a laser projector able to trace out designs in a dark room. To power it, I’ve cannibalized a PC ATX power supply capable of delivering plenty of current for the speakers. Most of this project was directly adapted from the
Arduino Laser Show (adapted from NothingLabs’ Instructable) Continue Reading
We have a great thread that contains lots of info on thermal differential controllers here. However, I wanted to start a thread dedicated to my own development of a thermal differential controller that I’ll be using for my attic heat reclamation project. Tonight I setup a simple circuit that tested the operation of the differential
Daox’s diy arduino thermal differential controller Continue Reading
I’ve built a number of projects that have interfaced the output of the Simple Bat Detector with a microprocessor. The most recent was the BatLogger II. But I hadn’t come up with an easy way for others to experiment with this idea … until now. My friend, Frank, in Germany, had wanted to make a
A Simple Bat Detector based shield for the Arduino Uno Continue Reading
This instructable will tell you how to make and connect a soft potentiometer to a microcontroller, in particular we will connect it to a Lilypad Arduino. In our case soft potentiometer means a potentiometer made of a textile conductive ribbon. What you need: 1. soft conductive textile ribbon. The important thing here is that the
How to make (and connect) a soft potentiometer Continue Reading
In this Arduino UNO tutorial, we are going to use a Light Dependent Resistor (LDR) to create a simple childrens bedroom nightlight which turns on automatically when it gets dark and turns off when it gets light. An LDR’s resistance changes depending upon the amount of light hitting the sensor. For the LDR we are
Arduino UNO Tutorial 8 – NightLight Continue Reading
Sometimes I just have those days where I really want to make something neat with the Arduino I have lying around, but I know I don’t have the patience for a more involved project that’ll take more than a day or so. This is for one of those days. The premise is as follows: A
1 LED Game with Arduino Uno and an RGB LED Continue Reading
I bought a small aquarium (54l) as an impulse buy and I needed some lights for it, so naturally I wanted to use LEDs. I also needed a timer for the lights. I also wanted the lights to fade in and out when they were going on or off as a cool effect. I ordered
LED aquarium lighting with an Arduino based PWM timer Continue Reading
