Circuit Lake

This circuit is for detecting any audio signal with justable noise offset. It could be used to generate a radio mute signal eg. from a PDA.

The circuit is consisting of: (more…)

The RSS Weather Reader is a homebrew device that goes onto the internet, finds information about the current weather conditions, and then prints the latest info to a small LCD screen.

Weather Underground provides an RSS feed that is constantly updated with the current conditions. The board has custom firmware that knows the address of the wunderground RSS feed, and can connect to it and update periodically. The board is connected to the internet via a standard router/hub/switch on a local home network.

(more…)

Do you want to modify your Espresso machine for low cost and more control? well, you can try what Nash Lincoln did. Modding the Gaggia Espresso with Adding a PID temperature controller and computer interface.

The goal of this project is to create a computer interface for my Gaggia Espresso machine replacing the factory thermal switches with a PID controller and the “steam” and “pump” toggle switches with a LCD/button menu system. This project use Arduino Decimillia micro-controller which utilizes the AVR AtMega168
(more…)

This is a mini inexpensive AVR Digital Voltmeter Project with three digit display. It has also general purpose digital IO pins. So, you could use it as well to read a digital sensor and display the value.

The project can be freely programmed, calibrated and even be programmed with a non linear formula. It’s a display where you can define the relation between the measured value and the displayed number.

Interesting to build it ?
(more…)