Circuit Lake

Electronic Project and Circuit Collection


Arduino Based ATtiny85 Programmer

February 20, 2013 By: admin Category: Arduino, AVR, Microcontroller No Comments →

Sometimes, you need only few input and output from microcontroller for your project. If you use Arduino, it would be costly and need more space. For small project like infrared pc remote control, an ATtiny85 microcontroller is good solution. It has 8 Kb flash memory, 6 input/output pins, low power supply at 1.8-5.5V, small 8-pin […]

AVR Digital Stethoscope

February 11, 2013 By: admin Category: AVR, Data Acquisition, Detector, Measurement, Microcontroller No Comments →

This digital stethoscope can be used as computer aided diagnosis (CAD) applications for the detection of cardiac murmurs. It can assist physicians in analyzing cardiac signals in real time during auscultation to reduce the risks of not detecting heart murmurs conditions. The Stethoscope system is built based on ATmega644 AVR microcontroller and custom-built sensor to […]

Arduino Laser Harp

February 01, 2013 By: admin Category: Arduino, Audio, Microcontroller, Miscellaneous No Comments →

This cool music instrument is built by SthepenHobley based on Arduino. This harp doesn’t make sound itself but generates a stream of MIDI data to drive an audio synthesizer. In other word, Laser Harp works as MIDI controller. The way it works is simple, when the player’s hand interrupts the laser beam Theremin, the photocell […]

USB Stick Logger for Serial Data UART

January 31, 2013 By: admin Category: Data Acquisition, Microcontroller, PIC, USB No Comments →

This PIC24FJ64GB002-based project allows you to log serial (UART) data and record it to an USB thumb drive without need a PC. To use USB Stick Data Logger, simply connect your system to the logger and plug in an USB key drive. Once the device is connected and correctly configured, all incoming characters on the […]