Circuit Lake

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This project enables you to drive two unipolar stepper motor or eight electric light bulb or DC motors. There are eight DC power switch you can open or close through PC parallel port. For safety reason, digital interface to PC uses optocouplers. You can connect up to six circuits to a single LPT, driving [...]

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People still use 16-key keypad as input device for any embedded project. I could be used as code input device for opening a door or as a general input to any project that requiring the input like alarm circuits, games, puzzles, DTMF generators.
This project will show you how to interface a 16-key keypad to [...]

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Arduino is powerful microcontroller modul. You can interface your Arduino with many networks like Bluetooth, Wi-Fi, GPRS, XBEE, and Ethernet. This project shows you how to interface Arduino with Telit GM862 Cellular Quad Band Module with GPS. In this project, you will see implementation of Starting and stopping the module, Initialization, Sending of SMS, [...]

This USB interface board project is used to connect 8 (parallel) data lines to the USB. Main component of this project is FT245BM. With a small internal FIFO (384 byte Tx, 128 bytes Rx) and 4 handshake lines which make it suitable for interfacing microcontroller designs to the USB. Wolfgang says that you can also [...]

Air-Byte IR Transceiver is a PIC based tranceiver that transmit & receive infrared signals with your PC serial port. The project provides a simple method for receiving serial data on one pin, and outputting serial data on another modulated at the IR detectors band-pass frequency.
The brain of the Air-Byte transceiver is a tiny 8-pin PIC12F508 [...]