Circuit Lake

The project uses Direct Digital Synthesis to generate sine, triangular and square waves in the range of 1 Hz to 150 KHz with 1Hz resolution. The frequency can be set through 16 switch numeric keypad or rotary shaft encoder (fine adjustment) and is displayed on a backlight numeric LCD module, Varitronix LCD module VIM-808. For debugging and eventual PC control, the system also including RS232 interface.Main component of the project is an Atmel AtMega169 microcontroller and Programmable Waveform Generator, Analog Devices AD9833. The MCU has role to control AD9833 and ...

The Aircraft Visibility Remote (AViaRy) is a remote control lighting system for radio controlled model aircraft with an emphasis on scale realism during flight. The system consists of a remote keypad connected to the pilot’s transmitter and an on-board controller connected to the aircraft receiver. The receiver side module is based on the AtMega168 microcontroller, while the keypad is a simple design utilizing an AtTiny2313.In the implementation (see photo), the system consists of the AviaRy keypad unit, a Futaba transmitter, a 7.4 Volt Lithium Polymer battery, the AviaRy Airborne circuit ...

The goal of the project is to build a self-reconfiguring LED Dot matrix display. It uses ATmega48 based modular LED matrix display unit, Kingbright TA20-11EWA LED matrix array, which can be chained together to form a self reconfiguring and arbitrary length LED matrix display. A head unit consisting of an ATmega168 is placed at the start of the chain to control the overall display.Ee Chen, the project designer, said that both a low speed and a high speed version of the units exist. The low speed version utilises a half ...

This project is the implementation of a low-cost, high-performance bipolar stepper motor driver. This driver was designed for the hobbyist who is retrofitting a piece of equipment for CNC operation using one of the inexpensive and readily available interpreter programs. Generally speaking, these programs are capable of reading the GCode output from a CAM program and outputting step and direction signals to the parallel port. It is the function of the driver built in this project to receive these step and direction signals and control a stepper motor based upon ...