Up until now, we have talked about working with a lot of low-power devices. Sensors, LEDs, ICs, and the like are all capable of being powered directly from your Arduino, but as many awesome 5 and 3.3v components as there are, eventually you will find yourself holding a 12v solenoid, motor, or light and wondering
High-Power Control: Arduino + TIP120 Transistor Continue Reading
Introduction For the third assignment, we decided to make a ‘knock-detector’ that is capable of informing the user/owner of specific events. We designed our system such that it can detect both casual knocks and knock patterns. Casual knocks could be used to inform the owner/user that someone is at door, which may be particularly useful
Knock Detector Continue Reading
The Arduino reads temperature from a MCP9700 temperature sensor IC and displays the temperature in the Arduino IDE serial monitor window. Also see the Arduino LCD thermometer tutorial (tutorial 14). Prerequisites Complete Tutorial 9: Using the Arduino Serial Port before attempting this tutorial. Components Besides an Arduino Uno board, USB cable, wire links and a
Tutorial 15: Arduino Serial Thermometer Continue Reading
I have been working on this project for a while and whilst it is still under development I decided to write a short guide after several requests to do so. The dimmer uses an interrupt driven XL-Maxsonar EZ1 ultrasound range finder to measure the distance between the sensor and your hand. By moving your hand
Ultrasonic Dimmer (Without Humming Or Buzzing Noise) Continue Reading
In this project, we will go over how to build a vibration detector circuit.This is a circuit which can detect and measure flex, touch, vibration, and shock.The sensor we will use to detect these movements is a piezo vibration sensor from Measuremenet Specialists (MEAS). The sensors are a thin strip of piezoelectric material with a
How to Build a Vibration Detector Circuit Continue Reading
For a while I have been looking for a way of getting a reading of main and leisure battery voltage, and inside and outside temperature in the van. I spent ages on researching and found some bits here and there that might help, but nothing to do the whoe job, and nothing really satisfactory, until
Arduino powered voltmeter and temp gauge 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
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
Introduction This page describes how to reflow solder surface mount printed circuits using a cheap toaster oven. It owes a great deal to Nophead’s Cooking with Hydraraptor blog post. The picture shows Sally Bowyer (Director, RepRapPro Ltd) preparing components for soldering in the oven. For more instructions on this see the video at the bottom
Toaster Oven Reflow Technique Continue Reading
In this article, we demonstrate how to create a compact and practical Arduino DMX512 controller that can be used to operate a smoke machine with DMX or for testing purposes. Arduino Mega, Arduino UNO, and other similar devices can be utilized with minor modifications. Only a few cheap components are utilized. The setup includes 6
Small Arduino DMX controller Continue Reading
