Need simple LED circuit.

[Gloominati]

I have a breadboard, a couple of 2.1V LEDs, and an assortment of resistors. I've never made anything before, so I'm not very experienced in figuring out what resistor(s) I will need. All I want to be able to do is light one of these LEDs up while avoiding burning them both out.

 

[Gloominati]

Aha, I figured it out myself. How rewarding. I just used a 330 ohm resistor and a couple of 1.5 volt batteries. I used Ohm's Law, and I think the current comes out to 2.7 mA.

Does anyone have suggestions as to what I should build next?

 

[truenoteno]

play around with some transistors

(signal ones of course)

 

[Gloominati]

I shall do that. Thanks.

I also found a 555 Timer that I purchased at Radio Shack sometime ago. Would I be able to make something interested with that, or would I need to purchase some other parts first?

EDIT: I guess I would need capacitors.

 

[grrr_arrghh]

There are quite a few websites around for beginers, with articles on principles, and some basic circuit diagrams to get you started.

to name but a couple:

**broken link removed**

**broken link removed**

edit:
ok the first one doesn't seem to work at the mo, so try http://www.electronics-lab.com - look at the 'projects' section and the 'articles' section.

Hope they are of some interest and use

Tim

 

[maxisp]

hallo pwollner

halloo

 

[pwollner]

u can build something quite interesting-

a irda reciever

use https://www.girder.nl/features.php to configure the whole thing


hey maxisp...

 

[laroche73]

555 circuits

here are a number of 555 circuits: **broken link removed**