Forum Index > Projects > Interactive LED projects
 How do Octolively work?
 |  Printable Version
By: Anonymous: XBerg () on Tuesday, October 11 2011 @ 03:38 AM PDT (Read 1255 times)  
Anonymous: XBerg

Hi,

How do these panels work? I see 3 types of LED - classic colored LED, a photo transistor and an infrared LED. Am I right in assuming that the infrared LED is always emitting and that each photo transistor is there to detect a change in IR luminosity? And when a change is detected it sends a signal to the microcontroller to light a classic LED?

So are the photo transistors tailored to IR wavelength?

thanks,

XBerg





       
   
By: ghar (offline) on Tuesday, October 11 2011 @ 07:27 AM PDT  
ghar

The photo transistors are IR receivers with peak sensitivity at 940nm to match the IR LEDs.

Looking at the firmware source, the IR LEDs are not constantly on, they are switched on only when their matching receiver is polled.


Forum Apprentice
Apprentice

Status: offline

Registered: 12/17/06
Posts: 10

Profile Email    
   



 All times are PDT. The time is now 08:32 PM.
Normal Topic Normal Topic
Locked Topic Locked Topic
Sticky Topic Sticky Topic
New Post New Post
Sticky Topic W/ New Post Sticky Topic W/ New Post
Locked Topic W/ New Post Locked Topic W/ New Post
View Anonymous Posts 
Able to Post 
Filtered HTML Allowed 
Censored Content 

Evil Mad Scientist Forum Archives — Read only!

Please visit our new forums for new discussions.


DIY Hardware for Electronic Art


The Original Egg-Bot Kit


Octolively
Interactive LED kits


Meggy Jr RGB
LED matrix game
development kit.


Business-card sized
AVR target boards


Peggy 2
LED Pegboard kits

My Account






Lost your password?