Judging from the video (found after the break) the Nebulophone is one of the best sounding DIY synthesizers we’ve seen. Especially when you consider the simplicity of the hardware design. It uses an AVR chip and an OpAmp. The rest of the parts are just a few handfuls of inexpensive components.
Simple toy created by a combination of modern integrated circuits. from
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.
I always dreamed about a development board for GSM modems.
When choosing a modem I stopped at Quectel M10.
And so what it includes:
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
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.
Wandering through the spaces of the Internet found a video robotic bass guitar.