Circuit Lake

The goal of the project is to use a microcontroller to regulate some larger household like home thermostat. The project will control the space heater to keep environment temperature is maintained near a desired set point temperature. By using a USB interface, the project can be controlled using Windows application. The system uses PIC18F252 as main processor, DS1307 as Real-Time Clock, and Texas Instruments' TMP101 as temperature sensor. The PIC microcontroller stores all of the temperature change entries as a table in its EEPROM memory, and keeps track of which is ...

The Simple Wireless Security System is a security system that includes a ZigBee wireless door sensor and a PC interface. The door sensor mounts near the garage doors, and it detects the open/closed state using reed switches and magnets. The Atmel Attiny45 microcontroller fits in nicely with design because of its small size, low pin count, low cost, and it has a powerful serial interface feature that can be set up as a UART – the required interface for the ZigBee module. When a door opens or closes, the Attiny45 ...

The RS232 Data Logger is entirely a software solution to log data using the ATmega169 AVR Butterfly The unit is used side by side with existing products or your homemade projects which has UART capability but it is not able to store much data for an extended time duration. AVR Butterfly has UART and a 4M bit Data Flash chip on-board. Ultimately able to store EXTENDED periods of interval logging. This module can possibly be used with a FLUKE 189 DMM. *One has to build an IR module as it ...

Shakemote is A Battery-less muscle-powered remote control for TVs, DVD, Air Conditioner and other electronics device that use remote control. The power generator design is similar to the ones used in muscle-powered generators torches. It consists of two main parts: a voltage generator and a voltage regulator. You can adapt the generator, which is based on Faraday’s principle, with the help of large capacitors such as Super capacitors and suitable DC/DC converters. By doing so, it is possible to easily meet the power supply requirements of the Shakemote. At the ...

This ATmega16-based project implements and demonstrates an interface which supports up to 3 moderately precise non-contact XY sensors, 3 low resolution rotational sensors, and 9 switches using a simple protocol on a single communications channel. It was developed primarily to provide low cost and easily implemented sensors for homebrew robotics projects. The project is equipped with RS-232 for the communications link to the other MCU host. The sensors which the interface controls are components in one to three inexpensive optical scroll mice. The mice are wired directly to the AVR, so ...

The Plant Minder manages the watering process for an indoor plant. It monitors the moisture content of the soil using several capacitive sensors, and controls the speed and running time of a low volume pump to drip-water the plant from a water reservoir. It automatically adapts the pump run time to the soil conditions, which can be greatly affected by the ambient temperature, humidity, and sun exposure. It is designed for larger plants, especially ones with large leaves, which need a significant volume of water every day to avoid damage. ...

The project will show you how to build an advanced motor control with high speed communication, encoder feedback and automatic control with AVR ATmega16 microcontroller. Analyzing motor feedback is the most important task in a motor control and therefore, the project, which is designed by Rickard Haglund & Lars Carlsson, use two Atmel AVR microcontroller. One of them is for analyzing the motor feedback and the other one for steering the motors and communicating with the rest of the system. The two processors communicate by I2C which the ATmega16 ...