VVVV+Arduino Magnetic Door Sensor Work

[basasa]

Hi guys, i need an help. I want to do a school project that uses vvvv, arduino and an ultrasonic sensor. My project is to detect a person opening a door and making a video(vlc) appear on the renderer. Basically, everytime the doors open a video projection in the room that the door conduct to start playing, in total there will be 5 videos that play. Now my problem is patching the arduino board and making a patch that makes the video start whenever the sensor detect motion in the short distance between the door and the handle. I hope you can help me out, i’m pretty bad in this, but i kinda need it, so, thanks in advance.

[catweasel]

https://www.instructables.com/id/Magnetic-Door-Sensor-and-Arduino/ you could always use a magnetic sensor, should be a bit more switch like than a distance sensor?

[basasa]

well, that seems the best way to do it, thanks. But then how i’m gonna put it all together? That’s my main problem.
1- DO i have to load firmata standard into arduino or the code that’s written in the link?
2- Since i’m bad, how can i manage to receive data from the sensor and make it play my video and next playing another when i reopen the door?

(I just need to get one single handle since ipothetically i would use 2 arduino’s, so i just need to make one handle play 3 videos in order)

thanks for the help, hope you can help me with this :)

PS: and if a used a tilt switch? since it is a tilting handle could it be possible?

[catweasel]

You should be able to use firmata, and vvvv will recieve it as an on off message that you can use straight off. All that code does is make inputpin 2 an input, and then if it is low, turn the LED (pin13) on. So in firmata make a digital input pin, and then read the values from it. Easy :)
Post back if you have trouble.
If you want to use a tilt switch, that should work the saem way I think, just set up and input pin and get the values from firmata.

[basasa]

OK, thanks a lot, i have other problems i’ll ask, :)

[basasa]

Ok, i can’t do anything hahah, i tried but nothing works as it need to, if you could help me out with the patch it would be great.

[baxtan]

Hey Basasa,
Its not a complicated process!
do things one by one:

• Make sure you have StandardFirmata uploaded on your arduino
• Check the help patch for Firmata Board node
• Look how Digital Read node behaves with and without Pull Up pin (Using Magnet)
• For playing the video one after the other, simply use a Counter node again: open the help patch look how it behaves in different scenarios.
  If its still not working as it should, then upload your patch here.

[basasa]

Thanks a lot, i’ll try this things out and reach out for you if i need other help, thanks again guys!