Circuit Lake

This is a video based remote environmental monitoring system for use in critical areas. The system enables you to connect remotely to a web page and obtain video image of the environment, temperature, mains power failure state, monitor the voltage of the backup battery, and monitor door contact state.

The project convert a standard residential water meter as an inexpensive industrial flow meter. To accomplish it, you need to remove the register of standard meter and adding a PCB to the top with a hall effect sensor to pick up the rotation of the internal impeller which has an embedded magnet that normally [...]

The purpose of ATMEGA8-16P1 based FM receiver project is to monitor polar orbiting weather satellites operated by the National Oceanographic and Atmospheric Administration (NOAA). The receiver will tune from 60 to 800 megahertz with an IF bandwidth of 50 kilohertz. While the IF bandwidth was chosen to be optimal for the NOAA polar orbiting [...]

The is a simple and less expensive amateur long-period seismometers by using PIC microcontroller and other new chips, such as switched capacitor filters. Long-period seismometers are useful for detecting and analyzing distant teleseismic activity (worldwide). Main part of the project is PIC 14000, MAX7401, and AD8628. The PIC controls A to D, time integration, etc. [...]

This project shows you how to build thermometer with multiple sensor. The project use AVR ATMega168 as main processor and DS18×20 1-Wire® Thermometers as temperature sensor. It can monitor up to 16 DS18×20 thermometers, with a variable logging rate of 5 to 9999 seconds. The data is displayed on a multi-page LCD display and send [...]

This Doppler Radar System Project enables you to track speeding motorists in your neighborhood. It measures motorists speed using frequency (Doppler) shift. Steve Lubbers as the project designer explains that the speed radar will generate a microwave energy burst using a 10 GHz Gunnplexer transceiver. The energy burst can be modulated using a PWM output. [...]

This is 3 in 1 digital data logger project. You can take several measurements: Temperature, Humidity, and Barometric pressure measurements. The project use AVR ATmega8 as main processor. While humidity and temperature are sense by Sensirion SHT75 and the barometer use Intersema MS5534. Those two components talk their own language which is similar to other [...]