Circuit Lake

Teachers Timer is ATtiny13-based innovative and discrete timing device for assisting teachers and lecturers. Using cell phone style vibrations and a simple one-button interface the user can be alerted to the passage of time without staring at the clock. For lectures and presentations the device can also include a laser pointer that will gently [...]

The AVR ATmega8 based swimming timer project help the swimmer to counts the lengths of the pool swum and calculates swimmer speed. The timer consists of two units – the timer unit, which counts and times length pairs; and the display unit which sits on the bottom of the pool and displays to the [...]

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 [...]

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 [...]