This is a contrived project to find a use for a very cheap board containing several big LED modules. A set of four 7-segment 1" green digits was cut from the board with a hacksaw. Left intact were the interconnections and the P-MOS digit drivers. The clock driver is a very obsolete chip which I had lying around for ages. The power assembly was recycled from a junked CD player. I did have to buy a sheet of oak to make the cabinet. The rear panel is cut from an unpopulated circuit board |
These are the photos of the finished clock. |
Here are the photos of the parts. |
Here are the circuit diagrams |