Circuit Lake

Electronic Project and Circuit Collection

Timer


Meeting Minder

March 23, 2010 By: admin Category: AVR, Digital, Microcontroller, Project, Timer, Tools No Comments →

The MeetingMinder is time reminder for public speaker that give a warning when their speaking time will end. The project is built as indication light tower that has red, green and yellow 360-degree wraparound lights, mounted to a base which houses a large two-digit seven-segment display and the control circuitry. The tower colors indicate “talk” […]

PIC Countdown Timer

May 09, 2009 By: admin Category: Monitoring, PIC, Timer No Comments →

The goal of this PIC timer is to provide a countdown time from 1 second to 99 minutes & 59 seconds. One of its applications is to control the lighting for the Ultra-Violet exposure of photosensitive PCB material. The project provides also an audible alarm at the end of the countdown time and switches the […]

Quiz Lockout, Scoreboard, and Timer System Using Microcontollers

June 18, 2007 By: admin Category: AVR, Project, Timer No Comments →

Project description:The goal of this Master of Engineering design project was to build a control and scoring system for high school quiz bowls. The system consists of a moderator unit and player units which ensures that only one of eight players may buzz-in to answer a question. A scoreboard and timer unit design is discussed […]