Well I have been trying to find a moderately inexpensive timer for my Space shuttle project. I have a launch to shoot on 11/30, hopefully, and what I need to do is to make a alarm clock type of thing to turn on our triggers at the launch window. I have a hand full of plugin wall timers to turn on lights. I was hoping to use them to switch on power to the triggers when the launch window opens and then turn off when it closes 10 minutes later. I have one right now that has 3 wires coming out of the clock circuit, 1 VDD, 1 com, 1 signal I think. If all of the timers coming are these then it may not be too hard. I could just add a transistor circuit to drive the relay, off 9vdc. My question here is could I do this with a Arduino pro, or small one, and a DS1307 RTC to then switch a transistor to drive the power relay. The hardware is not much of an issue but the software is. It would be great to program all 7 days launch windows so it will just run by itself no interaction needed except for checking when the launch doesn't happen. I am going to order the DS1307 and crystal on monday to experiment with this. Anyone have ideas on the software since I don't really have a lot of time to tinker with this.
I had also noted that someone had posted some code for a RTC a while back but how do I interface that with some way to trigger the relay?
Thanks in advance.