3.2v LEDs 12v battery

[Orion96]

Erm, yes...
I can see your flag. Can you not see mine?

Nope, I'm using my phone though

 

[Orion96]

Anyway, getting back to your original question, you said you don't have the right resistors?
You can series and/or parallel them to get what you need!

Martin

OK thanks

 

[Martaine2005]

I am in the UK.

 

[Orion96]

I am in the UK.

When I click on your profile then it tells me

 

[Martaine2005]

Ah ok..
So what resistors do you have?

 

[Orion96]

N

Ah ok..
So what resistors do you have?

None actually, I've never been able to buy any. The wait to get them is so long I never bothered

 

[Martaine2005]

You can get lots of good components from broken and thrown out electronics equipment.

 

[Orion96]

You can get lots of good components from broken and thrown out electronics equipment.

Aren't they usually so well soldered that I would end up damaging them

 

[Arouse1973]

Aren't they usually so well soldered that I would end up damaging them

Just use your soldering iron and a pair of tweezers or a small set of long nose pliers. Heat one end and pull carefully out of the solder joint. Do the same for the other side. You don't need the iron on them for long, just enough to melt the solder.
Adam

 

[Martaine2005]

No not at all.
SMD components might get damaged if you take a long time.
But generally, you only need a second with a soldering iron.
Most people who have problems de-soldering and damaging components don't know how.
I normally put a little fresh solder to the joints and then it's easy..

 

[Orion96]

No not at all.
SMD components might get damaged if you take a long time.
But generally, you only need a second with a soldering iron.
Most people who have problems de-soldering and damaging components don't know how.
I normally put a little fresh solder to the joints and then it's easy..

Thanks I'll try with some useless parts, I've never been good with soldering

 

[Martaine2005]

Thanks I'll try with some useless parts, I've never been good with soldering

It also serves as good soldering practice too
You can re-solder some of the componets you don't want several times..

Martin

 

[Orion96]

It also serves as good soldering practice too
You can re-solder some of the componets you don't want several times..

Martin

OK I found 3* 150 ohm resistors on an old circuit. Is that going to work?

 

[Martaine2005]

150 ohm is perfect..

 

[Orion96]

150 ohm is perfect..

Cool thanks for all your help, enjoy your evening

 

[Martaine2005]

Thank you..
Happy soldering.

 

[Tha fios agaibh]

If the Leds are rated at 20ma and a fully charged battery has around 12.7v, that would put you over at 26ma if you uses the R120 resistors.