Circuit Lake » ATmega8

Telescope Focus Controller

admin — Sun, 02 May 2010 23:21:57 +0000

The Telescope Focus Controller was designed to allow computer control of the telescope focus position through a serial port. It also allows manual control through clockwise and counter-clockwise buttons on the telescope’s keypad. To turns the focus shaft of a telescope, The project use stepper motor to do it. The project consist of microcontroller [...]

Septic Holding Tank Monitor

admin — Wed, 31 Mar 2010 00:41:11 +0000

The purpose of the project is to monitor and display the water level in a 3000 gallon septic holding tank. The system consists of two main parts: the sensor unit and the display unit. An ultrasonic sensor is used to detect the water level in the tank. It has an analog output that is proportional [...]

Personal Swimming Timer

admin — Sat, 27 Mar 2010 19:24:19 +0000

The AVR ATmega8 based swimming timer project help the swimmer to counts the lengths of the pool swum and calculates swimmer speed. The timer consists of two units – the timer unit, which counts and times length pairs; and the display unit which sits on the bottom of the pool and displays to the [...]

Home-made Sound Card Interface

admin — Fri, 26 Mar 2010 23:38:36 +0000

The PSK31 (Phase Shift Keying, 31 Baud) Adapter is a hardware interface between a PC running a digital communications program, such as DigiPan, and an Amateur Radio transceiver. The electronically adjustable PSK31 interface is controlled by microcontroller AVR ATmega8. It provides automated adjustment and optimization of the audio levels that are carried between the PC [...]

Model Aircraft Electrical System Tester

admin — Thu, 11 Mar 2010 22:56:11 +0000

In many applications loss of battery power is a problem causing no real harm. But, this is not the case in radio control (R/C) model aircraft. If the aircraft batteries “go dead” in flight it generally results in total destruction of the model and can represent a safety hazard. This ATmega8-based project goal, named MAESTRO, built [...]

Handheld 2.4 GHz Spectrum Analyzer

admin — Wed, 10 Mar 2010 22:37:55 +0000

This portable 2.4 GHz Spectrum Analyzer is built inside a cell phone case, Nokia 3410, and used the phone’s graphical LCD to display measuring results. It uses AVR ATMega8 as main controller and CYWM6935 module. The software is written in C using arv-gcc under Windows (WinAVR). The program runs continuously and make around six or [...]

Low-Cost Vehicle Security System

admin — Fri, 05 Mar 2010 00:27:20 +0000

This vehicle security system built using Atmel’s Atmega8 AVR microcontroller, Analog Device’s low cost acceleration sensor ADXL311JE and Dallas semiconductor’s DS1973 iButton. The circuit powered by small battery power supply which is integrated with the unit. The system works as follows, whenever Atmega8 detects the change in acceleration by continuously comparing the ADC count, it looks [...]