µ[micro]electronics info

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




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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The Open Source project Liberlab aims to help democratize educational scientific experimentation through the creation and use of a DIY digital lab at a very low price. Liberlab can also be used to learn about robotics, automation, human-machine interface or interactive arts.

Arduino + SD card

SD card read/write with Arduino.


A Multi-purpose USB Device with ATMega32

Sound synthesizers

Sound Effects Synthesizer and other synthesizers.

Nano GPS logger

This is a small GPS logger based on the San Jose Navigation FV-M8 GPS module that stores coordinates, altitude, and speed into an EEPROM.

LCD display for GPS module

A cool and creative way to combine the PIC Programming with the GPS LCD display.

DC motor speed control using PWM

DC motor speed control based on PIC16F867.

The circuit is using PWM with frequency about 10kHz, which does not make a noise in the motor. This project can drive motor with 1A current without heat. The motor speed is controlled by potentiometer which is connected to ADC input of PIC16F867.

LM75 Temperature Sensor

Simple LM75 temperature sensor on the breadboard

Programmable Power Supply

Programmable power supply 0.8 - 15V with PIC micro


Undoubtedly s'worlds smallest and simplest oscilloscope! An 8 pins PIC processor samples the analog input signal and generates a (PAL) video signal which shows the waveform on a normal television set.

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