Circuit Lake

The Hibox is High DC Power Meter based on the Atmel Atmega16 microcontroller. This equipment is capable to measure DC voltage up to 40V, currents up to 200A (600A with special sensor) and shows all values on 2x16 characters display. It was developed for enhanced measurements on new Lion/Lipol batteries which are widely used in many applications today. The Hibox also calculates and displays variables like energy consumed in Wh and Ah, actual power W [Watts] etc. All values can be stored in the internal memory with sampling period selectable ...

The project is an electronic version of an Etch-A-Sketch toy for kids. It can electronically emulate every function of the original. The system use Hyundai HG225504 LCD as screen which displays 256 pixels wide and 128 pixels high. Instead of a complex mechanical rail and pulley system to control the X and Y movement, Etch-A(vr)-Sketch uses 10-turn potentiometers. To erase any text and drawing on the screen, user need to shake the device. The system has been equipped with piezoelectric accelerometer to accomplished this task. The heart of system uses AVR ...

The Soundcard Oscilloscope is useful electronics software for student and electronics hobbyist. Like visual analyzer, the software use PC Soundcard as main hardware. The software receives its data from the Soundcard with 44.1kHz and 16 Bit resolution. "The data source can be configured in Windows mixer (Microphone, Line-In or Wave). The frequency range depends on the sound card, but 20-20000Hz should be possible with all modern cards. The low frequency end is limited by the AC coupling of the line-in signal. Be aware, that most microphone inputs are only mono," said ...

This AVR Atmega16-based rocket controller is designed to be used in water rockets (or any other type of rocket for that matter). The rocket controller allows the rocket’s performance to be logged (altitude, accelerations), and provides control of the parachute deployment system. Altitude is measured using a pressure sensor device. While acceleration is measured using three accelerometers – one for each axis (X, Y and Z). The controller has a dual color LED and beeper to indicate the rocket status. The beeper also assists finding a rocket lost in bush. The ...

This accurate clock project is developed based on the GPS Receiver which captures a time signal from the U.S. government's global positioning system (GPS) satellites and parses it to extract time syntaxes from NMEA string to finally display on 7-segment displays. The transmitter on GPS clock then broadcasts the time to every other nearby wireless clock and make them run in synchronization with same accuracy. GPS clock is developed using Atmel’s Atmega32L microcontroller with Fastrax GPS receiver module and six digit seven segment displays. For a particular installation there will ...

To get non-standard resistor value we can use parallel or series resistor combination. You can do quick calculation for R series but, sometimes, it's hard to get good resistance combination in parallel resistor to get R value that we need. Thanks to Claudio Girardi who has built Resistor Series-Parallel Calculator. It will help you find best resistor combination / match with easy. Just fill the resistor value that you need then the software will calculate the best resistor combination for the E12 (10%), E24 (5%) and E96 (1%) series. ...

COLT45 is a small multi-purpose device intended for the Amateur Radio operator, short wave listener, or other experimenters. Functions include a versatile frequency marker generator, a Morse code keyer, and a Morse code beacon generator with room for more functionality. The Colt45 uses an 8-pin Atmel AVR ATtiny45 microcontroller. To produce these precise low frequency square waves, an inexpensive and readily available 4 MHz crystal is used as the clock oscillator and several different program loops of varying (but specific) lengths are used to toggle an output pin at the frequency ...