PIC16F627 Countdown Timer

This project it is based around a PIC16F627 micro and It is build as a countdown timer for a UV exposure box for PCB development that uses fluorescent UV lamp with following features:

Adjustable time in 15-second increments (up to 10 minutes)
Lamp preheat feature
Two button operation (with audible feedback)
Countdown alarm (when timer reaches zero)
Relay for lamp switching
7-segment display

PIC16F627 Countdown TimerPIC16F627 Countdown Timer 1

Source: Arcom

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