We have electric 3 mattress heaters at home. Each is turned on/off by a momentary push button. It takes ~30 min to warm up and we always forget to turn them on in time. Timed electrical outlet doesn’t work, only pushing the button turns a heater on or off.I came up with the following design to allow both automatic switching at desired times and manual override. In general this system can be used for remote control of various home devices turned on/off by toggle or momentary switches. User interface is implemented as a simplistic web server. It’s certainly a reinvention of the wheel, but I just used this as an excuse to tinker with RaspberryPi, Arduino and wireless communication modules :)
Computerworld Singapore covers a wide range of technology topics, including software, security, operating systems, mobile, storage, servers and data centers, and technology companies such as Microsoft, Google and Apple.
The Aqua Monitoring System (AMS) is an innovation in water quality monitoring technology. The AMS 1.0 is to be attached externally to the hull of a vessel and completely submerged under water, where it will sense various aspects of water quality through an interchangeable set of sensors. Potential sensors include, but are not limited to, temperature, salinity, pH, dissolved oxygen, turbidity, and water composition sensors. The sensors will automatically check qualities of water every few minutes; all probes are connected to an Arduino microcontroller, which is connected to a GPS tracking device. A turbine inside of the body provides the apparatus with a sufficient amount of electricity. Fisheries would be able to use the AMS to test waters for hazardous pollutants. The AMS is small in size, versatile, and open source making it the perfect apparatus for scientific research, as it is easy to interchange sensors and alter code. Currently
While researching possible upgrades for my son’s Star Wars Bounty Hunter costume I came across an excellent blog post by Dave Shevett over at Planet-Geek.com on using a Raspberry Pi to create a voice changer for a halloween costume. This looked like something I could integrate into our lovingly constructed bounty hunter helmet. The system [...]
Using a pair of Arduino Unos and nRF24L01+ modules, this hacker can now remote control his lights. After struggling with a wall switch that was just too far from his desk to turn off without getting up, “Guyfromhe” decided to take matters into his own hands and rig up a servo to do it for him. […]
The development team behind the BSD-based NetBSD free operating system were proud to announce the official and general availability of the NetBSD 7.1 release. NetBSD 7.1 entered development only two months ago, when we reported the availability of the first Release Candidate (RC) build, which brought various improvements and bug fixes. It's the first point release to the stable NetBSD 7 series and comes with a bunch of exciting new features. "The NetBSD Project is pleased to announce NetBSD 7.1, the first feature update of the NetBSD 7 release branch. It represents a selected subset of fixes deemed important for security or stability reasons, as well as new features and enhancements," reads the release announcement. Prominent features of the NetBSD 7.1 release include support for the Raspberry Pi Zero single-board computer, better compatibility with Linux binaries so you can use various apps an...
You have a Pi 2, but what exactly can you do with it? This book takes you on a tour of the Pi 2 hardware and all of the fantastic things that you can do to create innovative and useful projects with your Pi. Start with creating a workstation that does actual work, and move into installing a custom kernel, creating a clock, learning the ins and outs of the GPIO interface, and pick up some useful C++ skills along the way.
This sketch sends IR codes to control devices : Samsung TVSony speaker systemLED Strip with IR receiverand all other IR devices (Working with a simple IR remote control)This sketch sends this IR code every two seconds :Turn Up the Sony loudspeaker systemTurn Down the Sony loudspeaker systemChange LED Strip color to RedChange LED Strip to GreenChange LED Strip color to BlueMute Samsung TVUnmute Samsung TV
I am a volunteer at my local CoderDojo chapter, an organization that does software mentoring for kids 8-18. I try to get kids interested in computer science by teaching them to build fun Arduino projects that use color, motion and social project-based learning. We sit in a large room and when kids walk in the door I want them to be attracted by a colorful LED sign with lots of changing color patterns.This project is also idea for schools that have display cases that want to highlight the programming skills of students in classes or science clubs.My design goal was to build an attractive sign you could build for under $20 in about an hour. My goal is to keep the design as simple as possible with a minimum of steps.
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