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Reply to "Semaphore and 555 Timer Circuit"

Thanks Stan! I even have it working on a breadboard too. Once you get all the little jumpers plugged into the correct holes in the breadboard it works great. Someone had a couple wires in the wrong breadboard holes right out of the gate, but they found and corrected them and all is well now. 

Still haven't found my We_Honest signals, all I can find are some red & green 2 LED signals that I have for switch indication. However, I am sure I do have a set of the MTH traffic signals you mention above and I'll dig those out and see how they could possibly fit together. I like the 'just plug it in' idea. 

I have been fiddling with the trimmer pot and capacitor values and I thin with the 220uf cap a 50k pot is more than sufficient. At about 25k ohms on the pot you get about 40 seconds on the red and green and 10 sec on the yellow. Have also been trying to tidy up my drawing and turn it into a PCB. Using Diptrace is quite fun and really not too hard to learn enough to get started with it. I still have a lot to learn though.

MOSFETs should be here by mid-week.

Thanks for all your help!

Last edited by rtr12

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