Metal Detector is a security device which is used for detecting metals which can be harmful, at various places like Airports, shopping malls, cinemas etc. Previously we have made a very simple Metal detector without a microcontroller, now we are building the Metal Detector using Arduino. In this project, we are going to use a […]
Arduino Metal Detector Continue Reading
Pull-up resistors are very common when using microcontrollers (MCUs) or any digital logic device. This tutorial will explain when and where to use pull-up resistors, then we will do a simple calculation to show why pull-ups are important. Suggested Reading Concepts that you should be familiar with before proceeding: What is a circuit? Resistors Voltage,
Pull-up Resistors explained Continue Reading
Success and reliability of a device depends not only on laboratory tests in “ideal conditions” but also on its mechanical construction. Elimination of mutual influence (EMC), optimal space usage, resistance to vibrations, easy assembly at production are one of factors why it´s worth to design mechanical part of a device into details. At production of
Simplify yourself a mechanical design of a device Continue Reading
Expanding on previous research into electronic devices that dissolve in water once they have reached the end of their useful life, researchers at the University of Illinois have developed a new type of “transient” electronic device that self-destructs in response to heat exposure. The work is aimed at making it easy for materials from devices
Things heat up for self-destructing electronic devices Continue Reading
I’m working on a prototype product(Wifi motion sensor) that will be powered from a battery source, it has a mega328(arduino bootloader, with sleep mode on and wake on interrupt,and WDT in case it hangs up), a PIR motion sensor , and a CC3000 break out board. Power saving is done in software, but what type
Battery powered device hardware design tips Continue Reading
As part of the Content Creation course for my MLIS degree (Our class blog: http://scumakers.wordpress.com/ ), I needed to come up with a final project and wanted to learn to use an Arduino. In the end I came up with this device to automatically sense when the soil in my garden is dry and turn
Automatic Garden Watering Device – Arduino Continue Reading
3/16/2011 EDIT: The Wing Kp Predicted Geomagnetic Activity Index model is now deployed and operational. Costello is now considered non-operational and will be discontinued on 23 Mar 2011. Comments and questions are welcomed at [email protected] The Wing Kp Predicted Geomagnetic Activity Index model is known to perform well for large geomagnetic storms and includes both
Spectrographic Auroral Indicator – A Northern Lights Warning Device using arduino Continue Reading
I recently watched an episode of Stan Lee’s Superhumans which featured a blind man who used a series of clicks, like a bat, to echo locate his surroundings. I got to thinking about other blind people and their ability to navigate freely – without the use of a guide dog or cane. I came up
Haptic Feedback device for the Visually Impaired [Project HALO] using arduino Continue Reading
The free ESD Suppression Selection Tool, from Littelfuse captures the environment where a circuit-protection device resides, and then runs a software simulation of the device. “This tool doesn’t evaluate our part as a standalone device because the part never operates as a standalone device,” said Chad Marak, director of semiconductor business development for Littelfuse. “It
Select circuit-protection devices with free online tool Continue Reading
There are many electronic devices that use the SPI bus, or Serial Peripheral Interface bus, for communications (e.g. various sensors, LCD displays, digital potentiometers, D/A and A/D converters, wireless transmitters and receivers, audio volume controls). The devices receive data serially from a microcontroller using a 3-wire set-up that includes a chip select signal (usually titled
Using an Arduino to Control or Test an SPI electronic device Continue Reading
