November | 2012 | Embedded Lab

Monthly Archives: November 2012

Tindie announces its first Cyber Monday sale today

Posted on November 26, 2012 by R-B Leave a comment

In past few months, Tindie, an online marketplace for creative electronics makers, has grown tremendously fast, covering 21 countries around the world. Today is Tindie’s first Cyber Monday and sellers are offering awesome discount in their products. Visit the following link to find out various discount coupons: https://tindie.com/blog/tindies-1st-cyber-monday-bonanza/ Embedded Lab is also offering 10% discount on all available products including Easy Pulse kit. Use coupon code: 79FBC2D at check out.

Making a simple clap switch

Posted on November 25, 2012 by R-B 49 comments

A clap switch is a fun project for beginners. It switches on and off electrical appliances with a sound of clapping hands. Today we will discuss about making a simple clap switch that operates when it detects two clapping sounds in a row. It uses an electret microphone as a transducer for converting a clapping sound into an electrical signal. The microcphone output is amplified by a transistor and is then sent to the PIC12F683 microcontroller which performs an ON/OFF switching action when valid claps are detected.

Digilent announces Design Contest 2013 for US and EU regions

Posted on November 8, 2012 by R-B One comment

Digilent has just announced their annual US and EU regional Digilent Design Contests for 2013. Digilent Design Contests are engineering contests open to all students enrolled in any educational institution in that region. Students are challenged to create an original project featuring whether FPGA boards featuring state-of-the-art Xilinx FPGAs, microcontroller boards featuring Microchip microcontrollers, or chipKIT boards based on the Arduino development environment.

Full musical keyboard using only discrete logic chips

Posted on November 7, 2012 by R-B Leave a comment

Here’s another elegant project submitted to the Open 7400 contest. This project is about constructing an electronic music player with a capability of playing real chords, which means you can press more than one key at a time and each key has got its own frequency generator circuit. The design consists of twelve 4060 oscillator/counter ICs used as tone generators, a dsPIC for sound effect and control, and an LM386 audio amplifiers.

1 MHz frequency counter using discrete CMOS ICs

Posted on November 2, 2012 by R-B Leave a comment

Miguel Pedroso constructed a digital frequency counter using CMOS 4000 series logic chips to participate in the Dangerous Prototypes’ 2012 Open 7400 contest. It can measure frequencies up to 999.999 KHz. The project uses six 4029 4-bit counter ICs that are cascaded and configured to work in the BCD decade up counters. The measured frequency is displayed on six 7-segment LEDs, each driven by the 4511 BCD-to-Seven segment driver chip. Via: Dangerous Prototypes

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