code question

Projects General Guidance
1

Hi guys,

I am just learning this stuff so this might sound simple to you but plz be kind,

I am trying to get a relay to activate for a sort amount of time 1 - 2 sec once a PIR sensor detects movement

then repeat every say every 5 seconds while the PIR is activated

any help with the code would be welcomed

Thank you

2

Have you tried it yourself ?

Do you know how to read the PIR output ?
Do you know how to test the value of the PIR output ?

3

I can get the PIR to activate and the relay to stay on but for my purpose i only need a real short activation of the relay

like i said i am new to this wiring of the boards is easy for me coding is difficult as its all new

6

I apologise,
Wiring the boards and there components are easy for me, Its coding that i struggle with.

8

Look at File->Examples->02.Digital->StateChangeDetection.

Use that to detect when the PIR changes from unactivated to activated.

When that happens: activate the relay, delay two seconds, deactivate the relay.

Repeat.

9

And Have a look at how millis() is used to manage timing without blocking in Several things at a time.

...R

10

If you need help with building a program from an empty setup/main template, start here:

Planning and Implementing an Arduino Program