ELECTRONICS - [counter device]

Counter Device

This project is about a counter device I designed. The device can be used to measure the time a certain contact is closed. The resulting time is shown on some 7-segment displays. The design doesn't include a PCB layout as I used a previously designed PCB to build this counter. That counter had 4 digits which give it a total range of about 9999 seconds (almost 3 hours).

REQUESTED SYSTEM
SCHEMATIC DESIGN
DOWNLOADS

The photo below shows the a previous version of the counter I built. I don't have a photo of the new counter as this circuit no longer exists.

Image of a 4-digit counter device