Forum Index > General > Ask an Evil Mad Scientist!
 |  Printable Version
By: Anonymous: xDGx () on Tuesday, June 22 2010 @ 04:29 AM PDT  
Anonymous: xDGx

I managed to light up 88 10mm clear lens ( no datasheet, I assumed 3.2v, 40ma ) blue LEDs (using appropriate resistors for each one of them) with 5v off 'hotwiring' a PC power supply. The room is all blue now! Thank you for all the info!

Now I'd like to make a strobe with it, with a pot to control the strobe intensity.
What's the best way to do it ? TRIAC ?
I've been told I can't use the 555 because of the amperage limitation.

Thank you !

By: Windell (offline) on Tuesday, June 22 2010 @ 03:26 PM PDT  

I'd suggest using a big FET or solid-state relay to switch the current, so that you can use a low-power signal from a 555 (or such) to control the higher current.

Windell H. Oskay

Forum Evil Scientist
Evil Scientist

Status: offline

Registered: 06/15/06
Posts: 1932
Sunnyvale, CA

Profile Email Website  

 All times are PDT. The time is now 03:20 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

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?