Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Idea: Smart LED front door light with PIR detector and light sensor

Status
Not open for further replies.

MFC

New Member
Hello to all. This is my first post on that board, so bear with me.

I searched the forums for the project I plan to do, but found no real answer.

Here is the idea:

I want to have a front door light using CREE high power LEDs that would:
- stay off during the day
- turn on at 10% current level when night falls
- ramp up the current gradually to 100% current when a movement is detected, stay at 100% for a preselected amount of time, then return back to 10%.

This would make a very efficient front door light.

I have some experience making using buckpucks and power LEDs, but I have no idea on how to make the "gradually changing" current driver for that project. I guess it would involve a microcontroller of some sort.

Has anyone some insights on this ?

Thanks for reading,

Mike, Switzerland
 
You don't necessarily need a PIC. It could be done in hardware.

I would use PWM to control the light intensity.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top