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Ukulele is a small guitar-like musical instrument with four strings and has been a symbol of Hawaiian music for over 100 years. Simone Giertz has created a miniature version of it using the Arduino platform. The strings are made of conducting wires and work on capacitive sensing principle, whereas the ukulele-like sound is created through a piezo buzzer.
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Check out this DIY LED matrix pong game, which is Arduio-controlled and uses a rotary encoder as input device and two 8×8 bi-color LED matrix boards for game display. The LED matrix displays are driven by MAX7219 chips.
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If you like gardening but hate to keep up with the daily routines of watering the plants, you might be interested in this Arduino controlled gardening assistant, which monitors and controls the soil humidity and lighting level inside an indoor garden to ensure that the plants have favorable conditions for healthy growth.
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If your next Arduino project needs some kind of remote switching control, this DIY 433MHz RF receiver plus relay shield might be useful for you. It includes a 433.92Mhz RF receiver and four SPDT relays, which allows you to perform wireless control of the devices connected to the relays. Each relay is capable of switching up to 10A @ 250VAC mains power supply.
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WebRadio is an inexpensive web radio player designed by Vassilis Serasidis using the Arduino platform. It features high-quality stereo output and 14 pre-defined radio stations, which can be set/modified in the Arduino sketch. The Arduino sends a request to a WebRadio server through the ethernet module (ENC28J60). The ENC28J60 is connected to the webradio server, sends the request and waits for response from the server. The response will be the header information of the radio station followed by the audio stream (mp3, aac etc). The arduino gets the answer from the server and sends the received data to the VS1053B mp3, aac,
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