Circuit Lake

This project details how to build a Smart/SIM card reader/writer for experimentation and investigation of SIM & Smart cards.Once the reader design is built, the open source software can be used to read from and write to the card. Together they can be used to backup/restore stored SIM card data, recover deleted SMS's and phone contacts, examine the last phone numbers dialed, etc. Sim Card Reader Read more simcard reader writer project www.ladyada.net

Let's build a simple digital oscilloscope. Single channel 100MHz/100MSPS (100 mega-samples-per-second) RS-232 based (we'll look into USB too) Inexpensive! A simple digital oscilloscope recipe Using parts from KNJN.com, here are the basic items of our recipe. 1 x Pluto FPGA board, with TXDI and cable (item#1121, $39.95) 1 x Flash acquisition board (item#1205, $39.95) 1 x BNC (item#1250, $4.95) 1 x Nylon standoffs (item#1270, $0.95) 1 x Male/female connectors 2x8 (item#1275, $2.95) That's about $88.75 so far. link

The purpose of this project is to engineer modular software and electronic components, from which it is possible to assemble an intelligent PC-based mobile robot suitable for home or office environments. This project aims to fill the gap between the powerful mobile robot platforms typically used by researchers, and the small rug-roving robots with limited processing power that are popular with hobbyists.src

The purpose of this project is to build a shaded lamp and to switch this lamp on and off in normal way. Then you could by exception dimming the lamp more or less with your TV remote control. To processing the RC5 code The project utilized by Microcontroller PIC 12F629. With the '0' button in TV mode you can dim the lamp, turn more and less bright. The remote control should send more then one RC5-signal per button-press seeing that the first one is ignored, this does imply that when the ...

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. link

by Ibrahim Kamal This Project shows you how to build a small, cheap and simple frequency meter, without any fancy, out of reach components. The simple proposed design can measure frequencies up to 40 Mhz with errors below 1%! This degree of precision will be more than enough to debug most of your analog and digital circuits, and will give you the ability to analyze many aspects that you were unable to see before. The design is built on a ATMEGA16 micro controller. There are no crystal oscillators, as we are ...

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 After seeing the various instructions and kits geared ...