µ[micro]electronics info

A weblog focused on interesting circuits, ideas, schematics and other information about microelectronics and microcontrollers.

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Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.

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Audio

Audio spectrum monitor

This analyzer displays an audio wave form in real-time like a digital oscilloscope and a FFT spectrum analysis.

An ultimate AVR MP3 player design

An evolution of the homebrew MP3 player - if you are interested in building your own, here is all you need.

USB Audio Streamer

A Microchip PIC based USB sound card

Multifunctional Alarm Clock

Unlike old-school mechanical alarm clocks that you have to set manually, this Internet-connected alarm clock provides three primary features: automatic time setting on power-up, streaming MP3 music, and remote management.

AVR synth

A monophonic synthesizer based on an Atmel AVR microcontroller.

Sakura - The World’s Simplest Open Source DIY MP3 player!

For around $30 in parts and a good amount of patience, you can have a completely open source and hackable mp3 player ready to go. It can be modified to accept serial commands, be embedded in an art project, used as the voice of your next smart talking robo-sidekick, or filled with music and used as is. Put in whatever size card you want, up to the theoretical limit of the MMC format.

Stereo PWM audio

Using a pwm channel of a simple microcontroller, a capacitor and a resistor to reproducting sounds.

µSampler - Microsampler

A sampler is a device that can record and store audio signals adding effects like time stretching, distorsion, phaser, changes in pitch, etc.

USB soundcard based on PIC

An USB soundcard for PC based on Microchip PIC18F2550.

MP3 Daisy player

The Daisy is a multipurpose sound player for embedded applications. It can be used as a standalone personal music player,as the sound for an art project, in a kiosk, as a museum tour guide, in a toy, or anywhere that high quality embedded audio is desired. It uses MMC or SD flash memory cards so storage size is unlimited. It has several interface modes for either human or machine control.

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