Simple toy created by a combination of modern integrated circuits. from site
Through 12 LEDs arranged in a circle indicates the direction of the tilt angle and in any light and LED always placed high above the ground.
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I always dreamed about a development board for GSM modems.
When choosing a modem I stopped at Quectel M10.
And so what it includes:
Features:
- The basis of the module M10 Quectel
- Quad-band version: 850/900/1800/1900 MHz
- Multi-slot GPRS: Class 12/10/8
- GPRS mobile station: Class B
- Compatible with GSM: Class 4 (2W @ 850/900 MHz) Class 1 (1W @ 1800/1900MHz)
- Support of voice services with output to a separate connector
- Integrated Data Service: TCP / IP, HTTP, SMTP, FTP, and more
- SMS, MMS, WAP and fax
- Phonebook with Search
- Integrated ringtones
- Supply voltage range: 3.4 to 4.5 V (4.0 V type), or 5.0 W
- Low power operation: 1.1 mA @ DRX = 5: 0.7 mA @ DRX = 9
- Operating temperature range: -45 °C to +85 °C
- Dimensions: 46 x 38 mm
And surfed spaces Internet i found a Czech site with such board.
PGSM – GSM/GPRS module M10
On a site was found http://www.frank-zhao.com interesting project homemade pocket watches on controller ATmega165PA wich operate 132 LEDs.
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Wandering through the spaces of the Internet found a video robotic bass guitar.


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Here you are a project electronic snowflakes on AVR.

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