Circuit Lake » ATmega88

RS485 Voting Pad System

admin — Thu, 09 Dec 2010 21:52:03 +0000

This integrated voting system similar to audience poll system on TV game shows, Who Wants to Be a Millionaire. The keypads consist of an ATmega88 microcontroller and a MAX485/DS75176 RS-485 Transceiver. They are connected to a single RS-485 bus using daisy chain topology with CAT5 cables as connector. Keypad nodes are interfaced to the [...]

Television Character Superimposers

admin — Mon, 06 Dec 2010 22:38:25 +0000

The project goal is to built low cost TV Superimposers based on ATmega88 and ATmega48. The device allows you to display numerical data, such as temperature values, or characteristic data, such as short comments about the video feed along with real-time images from a camera. The project is composed of 2 PCB boards, VSP main [...]

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IR Remote Control Audio Video Switch

admin — Tue, 26 Oct 2010 23:18:28 +0000

Remote controlled audio/video switching is not a new concept, but modern microcontrollers allow designers to incorporate functionality that was quite difficult in the past. Specifically, it is now possible using microcontrollers equipped with EEPROM and SRAM to capture IR signals and store their timing data for use as reference profiles that allow the device [...]

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Crawling Robot

admin — Fri, 20 Aug 2010 02:40:19 +0000

The SNAKY project goal is to build a robot moving around using the same crawling principle of a snake. This ‘fun robot’ is made with a set of thirteen articulated sections and the angle between each pairs of sections is driven by a servo motor (so twelve motors), simulating the muscles of the snake. Each [...]

Modular User Interface System

admin — Sun, 11 Jul 2010 01:29:51 +0000

The IOSTRING is a modular physical user interface system which consists of a series of three basic board modules designed around the Atmel AVR AtMega88 MCU. Each module type can handle switches, pushbuttons, rotary selector switches, rotary shaft encoders, potentiometers, LED’s, LCD displays, and an alphanumeric LED display. Dual footprints are provided on each board [...]

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Low-Cost AVR Based Logic Analyzer

admin — Mon, 05 Jul 2010 03:19:46 +0000

This Logic Analyzer project allow you to monitors and captures a number of digital signals. It uses PC to display the data processing. The system consists of ATmega88-20PU AVR microcontroller as main processor and some simple components used for the interfacing with the PC, the man and the probes.The measuring instrument supports 8 input lines [...]

Related project:

Speaking Calculator

admin — Sat, 08 May 2010 23:09:46 +0000

This Speaking Calculator project is an interesting device built just by three chips that can be very useful to blind people. The system has four basic operations (addition, subtraction, multiplication and division), and the functions: clear all, change of sign (+/-), inverse (1/x), square root (v), pi number (p), add with memory (M+) and read [...]