In my drawing, the TIMER box has 4 connections just like the image in post #14. The two on the left are the power input to run the timer. The two on the right are the SPST output switch. Pin 2 of the relay coil is connected directly to the - power. Pin 1 of the relay coil is connected to the + power through the timer switch. When the timer output is On, the NO relay contacts are energized. When the timer output is Off, the NC relay contacts are energized.As I look at the diagrams given to me today I see in yours that the two lines that enter the 8 pin Dpdt relay 1&2 pins is - and I thought that 1 had to be -&+ to work coil. Not being smart just was thinking it worked like a solenoid I my be wrong. Please explain I am learning a lot today.
I don't understand this response. The timer, relay, and switches all are purchased components, and are not modified in any way. Given the requirements in post #1, what function would a microcontroller serve? Also, given the TS skill level, I don't think having to buy a PIC development kit, take a few months to learn C++ and how to deal with all of those PIC configuration registers, and then wire up a circuit that requires a separate regulated power supply and some kind of packaging is a rational approach to this problem.It is much better to create your own program on an 8 pin PIC chip rather than muck about trying to modify things that are already built.
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by Kate Smith
by Jake Hertz