Circuit Lake

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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.

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The purpose of the project is to monitor the temperature of three compost heaps. It will send the data wirelessly to the receiver and process or display the result to PC. In the transmitter board, the project uses the TXM-433 as RF transmitter and MCU AVR AT90S4433 (you can replace it with AVR ATMEGA8) [...]

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This Radioisotope Analyzer project is built around PIC32MX360F512L. The device used for identifying and studying sources of ionizing radiation. This handheld laboratory instrument will processes the signal from a sensor called a “scintillation probe”, analyzes and stores the data, and produces a graphical output known as an “energy spectrum”. The location and amplitude of [...]

This AVR ATmega8 based radar range finder project uses infrared light instead of ultrasonic. The project is built to detect sound absorbing materials like padded furniture which can not be detected by ultrasonic radar. Ultrasonic ranging systems require many milliseconds of acquisition time rendering them unusable for fast moving systems.

This is LED lamp project powered by solar. It will harvesting the Sun during the day and charging the battery. The project uses SEPIC converter that capable of boosting or dropping the input voltage. It allows the use of a battery with a voltage close to the LED conduction voltage. The project is built around [...]

There are some ways to measure humidity in soils, which are different and more difficult than measuring relative humidity or humidity in air. One example is to take the sample, warm it up and measure the time it takes to loss humidity and the weight of the soil before and after the process.

The aim of this project is to help blind people, or people with Color blindness problem, who has difficulty to differ colors. The system will analyzes the color of a surface and then pronounces its result through speaker.
The project uses TRS17xx as color sensors. The voltage at sensor output will be varies depend on rays [...]