Javier from CookingHacks writes:
We made a step by step article about how to track vehicles using Arduino + GPRS / GPS. Then we integrated the information using the Google Maps API. All the code is available with open source license.
Realtime GPS+GPRS tracking of vehicles using Arduino - [Link]
Researchers say they have captured the sound of a single moving atom.
Researchers at Columbia University and Sweden’s Chalmers University of Technology say that they have, for the first time, “captured” the sound a single atom makes when it moves around—a single “phonon,” as it were. It’s an achievement that could eventually be used as the basic science for new quantum computing devices.
Like everyone is taught in elementary school, anytime something moves or vibrates, it makes a sound. Scientists now know for sure that that principle extends down to the lowly atom.
“The sound amplitude, or strength, is very weak,” said Göran Johansson, a co-author of the paper published today in Science. “Basically, when you excite the atom, it creates a sound, one phonon at a time, according to theory. It’s the weakest possible sound possible at the frequency [that it vibrates].”
Scientists Have Captured the Sound One Atom Makes - [Link]
by Jose Daniel Herrera:
Here I present another project based on a addressable LEDs strip, based on WS2812b leds.
It consists of an ‘electronic’ candle, which lets you select set colors, adjust the intensity, and have different effects like rainbow, fade and fire. The project arose from the purchase of an IKEA lantern model BORBY … the idea was to replace a candle of considerable size, for something more … modern.
Candle with remote control and Arduino Pro Mini - [Link]
Matt of SkyLabs has a nice build log about a temperature controlled reflow oven he built using an Arduino based PID controller and a standard toaster oven:
We have successfully managed to build a temperature controlled reflow oven using an Arduino based PID controller and a standard toaster oven from Robert Dyas! This is a must have accessory for any hobbyist who regularly uses surface mount components within their designs. Below we have a build log documenting the process of constructing the oven including:
Teardown of the original oven
Custom enclosure construction
So to start off I will outline a basic parts list of what I used:
Reflow Oven Shield
Solid State Relay
230v AC to 5v DC Power Supply
Custom Laser Cut Enclosure
Temperature controlled reflow oven build - [Link]
Charles Edward Pax has announced that the T400 temperature datalogger is now being offered on Kickstarter!
The Pax Instruments T400 datalogger is an open source four-channel thermocouple temperature datalogger based on the Arduino™ Leonardo platform. It is ready to use out of the box with the features you want most. Measurements can be logged to MicoSD card, printed to serial port, and graphed. The T400 is a great tool for anything from live thermal process monitoring in the lab to long-term environmental data collection in the field.
Data logger handles four thermocouples - [Link]
by mjlorton @ youtube:
I go through the design and operation of the college power supply project. There is one minor error that still needs to be corrected but I think we are very close to a final design.
DIY Bench Power Supply #5 – Circuit Design and Operation - [Link]
by TheSignalPathBlog @ youtube:
In this episode Shahriar takes a close look at some of Dino-Lite’s USB Digital Microscopes and accessories. Two of the microscope stand offerings from Dino-Lite are demoed (model MS36B and RK-10) with a close look at their features and usability. All USB stands offer precision Aluminum bodies and flexible ranges of motion for a variety of viewing angles and distances.
Three USB Digital Microscopes from Dino-Lite are also demoed: models AM4113ZTL Dino-Lite Premier, AM4515ZTL Dino-Lite Edge and AM4815ZTL Dino-Lite Edge. These microscopes offers features such as large magnification combined with long working distances, adjustable polarizer, adaptable cap design, MicroTouch shutter button, extended depth of field (EDOF), extended dynamic range (EDR) and automatic magnification reading (AMR) which are all compatible with the provide DinoCapture 2.0 interface software.
Using Dino-Lite’s microscopes, a variety of electronics components are presented: An Analog Devices PCB containing 0102 footprint components, A PIC UV erasable Silicon die, a 325GHz horn antenna, a composite wafer probe with 150um pitch from GGB industries. Finally, the complete breakdown of a QuinStar mm-wave PA module is shown with microwave filters, pre-amplifiers, and a Wilkinson-based GaAs PA as a final stage.
Dino-Lite USB Digital Microscopes Review and Experiments - [Link]
Dave walks around the Electronex 2014 electronics exhibition at the Australian Technology Park, after hours when no one is there, and takes a peek at every stand.
Electronex 2014 – Walkaround - [Link]
raj @ embedded-lab.com writes:
Check out Cooking Hacks Arduino-based GPS tracker project for vehicles that could be extremely helpful to pinpoint the exact location of the vehicle in case it is stolen. The project uses a GPS+GPRS shield with an antenna to locate the coordinates of the vehicle. You need to call the device from your preset phone number, which will be verified by the SIM908 module on the tracker, and it will then send you an SMS with the GPS coordinates of its location.
Real-time GPS tracking device for vehicles - [Link]
by fileark @ electronhacks.com:
BMO from Comedy Central’s Adventure Time is adorable, if only someone would make one that can walk! Atleast we can make one with a personality. Here is a build using easy to get parts including Arduino Pro Mini, Nokia 3310 LCD screen, audio playback, accelerometers, and distance sensors.
The parts added up to around $70.00
DIY Arduino Mini BMO - [Link]