Circuit Lake

Remote accelerometer is small device that has a three axis accelerometer and transmit the acceleration values to a remote host. One example of its use is to gather a data from moving object. You can attach the sensor to someone and when he move like jump around, you can use the data to produce sound or modify music on your remote machine. "It's like a simple version of Wiimote" said Alex, the project designer.Main part of the project are ATmega328P, Arduino compatible microcontroller, running at 8 MHz; ADXL335 (3 axis ...

The project allows you to determine whether or not the caller is an actual person. If not, it hangs up without ever disturbing the user. But, when the caller is real human then its built-in ringer will give alert to user. Telephone screener is very useful to avoid automated telemarketing call in the middle of dinner, just to find only silence at the other end of the line. The hardware is based on microcontroller PIC16F872 and plugs into an ordinary phone line. While, its firmware is written in assembler and ...

Seeker II is an autonomous mini-sumo robot which is designed to compete in mini-sumo robot competitions. It is low, fast, very aggressive, and has wide tires that provide a lot of traction. The robot's brain is Microchip PIC16F876 programmed in C.The mini sumo robot sensors consist of two range finders and two edge detectors. The range finders are Sharp GP2D12 analog range sensors. They are cheap, simple to interface to, and provide very accurate results without being affected by ambient lighting conditions. The edge detectors are Fairchild QRD-1114 Infrared sensors. ...

The project is used for repairing of broken PC monitors. It can generate video signals with 8 different raster images. The tester features 4 resolutions for each image combination: 640x480x60Hz, 800x600x60Hz, 1024x768x60Hz, and 1280x1024x60Hz. Main component of the project is MCU AVR AtTiny2313 from Atmel running at 20MHz.MCU generates horizontal and vertical sync signals directly from its ports. While resistor network work as simple D/A converter to convert R,G,B signals to analog signal (0~0.7V). This portable tester is powered by battery or DC power supply adapter operation: 7.5V~12V. If you ...