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Special hearing aid for high frequency hearing loss

Posted on December 5, 2013 by R-B Leave a comment

A person suffered from high-frequency hearing loss has reduced ability to hear high frequency sounds. This has direct impact on his/her ability to understand speech because most of the commonly used consonants like s, h, and f, are spoken with high pitches. Other examples of high frequency sound are a woman’s or a child’s voice. Studies have shown that by simply amplifying the high frequency notes through a hearing aid does not help too much. Latest hearing aid technologies use a technique called frequency lowering where the high frequency notes are captured, processed, and delivered to the person in lower

DIY Variable DC Power Supply with Display and PC interface

Posted on December 4, 2013 by R-B One comment

A variable bench power supply is an important equipment in electronics lab for conducting experiments, prototytyping, and testing. This cool-looking DIY bench power supply provides fixed 5V and 12V outputs along with a separate variable DC output ranging from 1.2 to 25V. The on-board LCD display shows instantaneous output voltage, current, and power drawn, which are very important parameters during prototyping of a new project. The power supply can also be connected to a PC through RS232 port to visualize and monitor these parameters graphically on screen. The project uses Atmega8 microcontroller for measuring and displaying the electrical output parameters.

Web-controlled AC outlets

Posted on November 8, 2013 by R-B Leave a comment

This Instructable describes the hardware hacking of Stainley’s remote controlled power outlet and modifying it to make it controllable through web or smartphone using Electric Imp. The Electric Imp is a WiFi enabled development platform powered by a Cortex-M3 processor core enclosed inside a tiny package that looks like a SD card. The Electric Imp is the core of the system operation. When the button on the Web App is activated, an AJAX HTTP Request is made to a URL specific to your Imp. This request is sent to the Imp Agent in the Electric Imp cloud that is specifically associated

Microchip’s new PIC32 Bluetooth® Audio Development Kit

Posted on October 28, 2013 by R-B Leave a comment

Microchip has announced the new PIC32 Bluetooth® Audio Development Kit that enables custom application development on the PIC32 microcontrollers (MCUs) for Bluetooth and USB digital audio solutions. The PIC32 Bluetooth Audio Development Kit that ships with audio streaming demo code delivers up to 24-bit, 192 kHz audio and has been tested with over 100 different Bluetooth audio enabled devices, spanning 18 different manufacturers. The Bluetooth Hardware module and the Bluetooth A2DP audio software have been Bluetooth.org certified, saving the developer significant certification costs. The modular design allows developers to swap out the included daughter boards (one for Audio and one

Free PCBs for open source projects

Posted on October 27, 2013 by R-B 2 comments

Electronics-Lab has announced to provide 5 pieces of free PCBs for your design if you open-source and publish your project on their website. Get a professionally manufactured PCB for your design completely FREE! We are happy to announce our new PCB giveaway program for the OSHW community. We will professionally manufacture 5 pieces of your PCB design and ship them to you worldwide completely free. We just ask to publish your Open Source design on Electronics-Lab.com projects section (under your name) and you will get your PCBs for free in 15-25 days (depending on destination). All designs submitted will be manually reviewed

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