How to make Countdown Crosswalk PED work using an Arduino and Solid State Relay 

Thank You

Thank You!

I would really like to add those to my collection.. Someday.....

Basically they use a type of 7 segment display and really has to do with how the 7 segments are configured. here is a quick video on the 7 segment displays which may help. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-L1qN0iPeYqg.html

I updated the weblink to my Github account. enjoy the sketch. If ya make anything cool post it and send a link

@@jrocco36 Thanks! I'll take a look at it. Doubt that I will make anything more interesting than you already have :)

@@Pondus Jump in and experiment with your Arduino. That's really what the Arduino was made for. They can do so much and when you try to do something that your not as experienced with there are many examples and books that will help! It gets easier as it goes. My example is really simple and it can be used to build a full intersection on. We all have to start somewhere. if ya have any questions feel free to ask.

@@jrocco36 Thats my plan ;)

Yes, it would be fairly easy to modify the program I have linked above to add a fully actuated PED Signals. It's a good building block to start with! On a real system, When you press the PED CALL button it doesn't change the light as some people think, What it does is ADD a PED cycle. Think of the entire program as a ring. and on this ring are loops. When it goes to RED it stays with the RED Loop for the amount of time programmed into the controller. After the time is up it move onto the next loop on the ring. So when the button has not been pressed the controller does not add a PED loop to the ring, But when the PED CALL is pressed then it adds the PED loop to the ring. Using an Arduino with a button you just tell the program that when the button is pressed then go to the PEDloop sub routine. once the PED has counted down to Zero (PED CLEAR) then it would return to the part in the program where it left off. Thing to also consider is what happens to the RED during the PED Cycle and when there is no PED Cycle. Say the red is 30 seconds without a PED Loop added. Then if someone presses the PED CALL button it adds the amount of time needed to walk across the street and count down to PED CLEAR. Remember to have the PED countdown on the first cycle of your program so it stores the PED CLEAR .... (example have it flash 10 times if you want it to countdown from 10) Even real traffic controllers do one complete cycle . Not knowing how well versed you are programming Arduinos but it basically press a button, go to a submenu, do the action in the sub menu and return . I should do a video on this very question as it I think it would be interesting

JRocco 36 Awesome!! This is great because I have a traffic light and PED signal with a button and Galak controller and the green light stays green and the red hand stays red until someone presses the button. When you do press the button the traffic light changes to yellow then red and the walk man will come on then start counting down to zero. Then the traffic light turns green and stays green until someone presses the button again. I’m not to familiar with computer programming and I’ve been looking into the “real deal” traffic light controllers with the load switches and all but are so expensive. The controller in your video is very cheap for all it can do. I would like to set up another traffic light and PED signal to my collection and have it all work together. But that is very useful information and would love to see a video with the PED button! Thank you so much!!

You would consider that one direction would be your "Main" Street and the other would be "Cross" Street. first step would be all Red for both Main and Cross plus all the PEDs would be set to DONT WALK. and hold that for a few seconds. say 4 seconds. Next Main would be Green with the PED WALK and the Cross street would hold Red and DONT WALK. hold for say 15 seconds Next Main would still be Green while the PED starts Flashing DONT WALK. Cross would remain the same. Maybe flash 10 times Next Main would be Yellow and the PED would be DONT WALK. Cross would remain the same. make that 4 seconds Next step would be all Red for both Main and Cross plus all the PEDs would be set to DONT WALK. and hold that for a few seconds. say 4 seconds. Next Main would remain RED with PED DONT WALK. Cross would be Green and PED WALK.hold for say 15 seconds Next Main would Remain RED with PED DONT WALK. Cross would be Green and the PED starts Flashing DONT WALK. Maybe 10 times. Next Main would remain RED with PED DONT WALK. Cross would be Yellow and the PED would be DONT WALK. make that 4 seconds. After that the cycle repeats. You can use the Arduino Program I supplied above as a good start. Just think of what the other signal should be doing as you move through the cycle. Also as you go about your day watch the real traffic signals and PEDs and they will give you a good Idea on how to make a intersection work. You can also lay out the whole thing using just LEDs and try different times and maybe add a turn lane. Most of all have fun with it.

In the Arduino program It has what each of the output pins do. Keep in mind this is only +5v out so do not ever connect mains current to an arduino. // initialize digital pins as output. pinMode(2, OUTPUT); //WALK pinMode(3, OUTPUT); //DONT WALK pinMode(4, OUTPUT); //RED pinMode(5, OUTPUT); //YELLOW pinMode(6, OUTPUT); //GREEN

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