Hi guys, where do i find the instructions for the traffic light project ? i can't find a link anywhere.

Check this page (Traffic light controller)

yeah went to that but there's no link to the project details. anyone else help ?

Go to the downloads area. Near the bottom of the list is a link to the schematics. The one for the traffic light project is in that file. That's really all you need. The rest is in the programming and the description in the NK guide.

thanks mongo, i went there but there wasn't anything for the traffic lights. maybe i got a different NK guide ? it doesn't have anything either. TOO HARD. i'll try another project.

Hi fergalicous,

The traffic light project is not something we provide step by step instructions for because it is a project we hope you attempt yourself. You learned how to plug an LED directly into the MCU in the guide, and it really just involves adding more LEDs in the right place. Its a good project to attempt if you are feeling adventurous!

Humberto

ok. finished then traffic lights. very cool. can i suggest a topic for a video tutorial. how to use a multi meter for newbies, would be very helpful me thinks. i read the book that came with it, (sorry, i looked at the words & thought 'wonder what all that means ?'). i'm sure it all makes perfect sense if you understand it but . . .

sorry, another question. i want to make the buzzer thing buzz when the lights stop for the pedestrians to walk. any idea where i should look ?

Interesting thought. I think I can put the traffic light project together again and see what can be done. I have a dual servo setup on it right now, as I haven't really had much time to work with it.

Hi FERGALICOUS,

There are a few places where we use the piezzo electric buzzer to make noise. Take a look at the Making Music with a microcontroller video. In that program we vary the PWM frequency to create different notes but if you just want a buzzer you can essentially just connect your buzzer to a properly initiated PWM output. We also used the buzzer in our Halloween Human Theremin video to create the spooky buzz.

Humberto

thanks guys. i'll have a crack at it. let you know how i go

in the human theremin project, can you use a polarized capacitor in order to make triangle waves?