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 1310 times)  
Anonymous: XBerg


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?



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

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

Status: offline

Registered: 12/17/06
Posts: 10

Profile Email    

 All times are PDT. The time is now 10:37 AM.
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

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?