3V LED Circuit With Switch.
hello there today we're going to be wiring up this basic three volt LED
circuit with a switch this videos for David Lacey out there sorry for the long
wait so just go through the items that we need here so just showed you a
battery holder which will hold a CR type battery CRT o2 o3 - I'm gonna switch
their led in the three volt range so we won't need a resistor in this video so
this is just a basic video showing up showing how to wire a basic LED light
I'll show you the materials there solder some heat shrink their battery battery
holder LED there's a wire strippers just testing out the LEDs there with the
three volt battery you can run two three volt LEDs off of the battery but the
that will train the battery so it's probably advisable to use one three volt
LED two one three volt battery as we go there the button battery so just strip
in the ends of the cable there so your red-and-black so Reds gonna
signify the positive and black and the negative it's a strip Pathak strip out
the ends no twisting the the wires together just to make it easier to put
some solder onto the ends there so I just put them in my little helping hands
tool with the crocodile clips as you can see which is very handy but the solder
and I they're all warmed up and ready to go I say three what soda and iron and
now we just put some solder on the ends of the wires so put the solder and I'm
behind the wire just to heat up the copper wire and just put the solder into
the ends of the wire there
and then we'll connect this to our battery holder also solder the terminals
on the battery holder and then we'll solder the ends together the cables to
the battery holder
just snip in the ends off after the solder has gone hard cooled down try not
to burn yourself while you're soldiering just cutting the ends off neatly there
with a pair of wire cutters and now we're just gonna put some solder onto
the terminals of the battery holder it might be an ear job to put the battery
holder onto a piece of circuit board if you want to depending on your project
they all certainly may the circuit more sturdy in this case they're just solder
in the ends straight to the battery holder so there we are just joining the
cables to the battery holder making sure that we've got the negative on the
negative side of the battery and of course the positive on the positive side
of the battery we'll be switching the positive side so when we get around to
putting the switch in it will switch the actual positive side of the circuit
there so that's switching the red cable which will then go into the LED the
anode side of the LED which is the positive side the negative side of the
LED is the cathode
so there we are we've got that in place
and we'll put some heat shrink over the terminal part of the battery holder and
over the expose metal of the of the cables so that'll add some protection
and avoid any possible short-circuiting
soak up a heat shrink there or put over the cables and then we'll use some heat
to shrink wrap the heat shrink over the cables and the terminals ooh you can use
your solder iron but I've used to light sir in this video cigarette lighter
which reminds me I've got to give up smoking it's there I just saw going over
with the edge of the solder now and then just for demonstration but it's easier
with a lighter or one of those little flamethrower things or they call they
come brother corner you don't want to you obviously don't want to be burning
your cables or items components so you just want to lightly put the lights are
over the heat shrink quickly just as it shrinks so now we're getting the LED in
place in this case as a yellow LED strip in the cables back again where we need
to strip them and there's a little diagram on the screen they're showing
showing an LED the plus and minus and the anode and the cathode so we've got
an actual picture of an LED and a circuit symbol of the LED also shown the
anode and cathode to anode positive and cathode negative well sure I don't
mentioned but you probably could see we've got the circuit diagram for the
whole thing at the top left hand side of the screen so there we are just
turning the legs of the LED would be the same of the cables which we're going to
join to using our happy hands-free or helping hands thing magic there so
making sure that we've got the red positive joining to the a nose and the
black negative joining to the cathode if you get it round the wrong way it will
work
so carefully doesn't
and cut the ends off just to make a nice neat job
so when we join the wires to the LED here we've just go one basic circuit
without a switch and we can test to see if our LED circuit will work without the
switch as we know that we can proceed and cut into the positive cable to power
switch so heat-shrink again some couldn't heat shrink on the negative
cable there as you can see and attaching the negative cable to the cathode of the
led
so same again use a lighter to activate the shrinking properties of the heat
shrink oh no we have got love part yeah just testing out the circuit so there's
a basic circuit just tested in this circuit with the battery there so as you
can see it's working so we can proceed to put the switch in place yeah I
remember now for that for the lights are on the to heat shrinks and now after
cutting into the positive cable when we will put our switch they are using the
lighter they're carefully there's not the burn any components and the wires
and there's some nice protection before our circuit so to avoid any potential
short circuits there are there's our cuts in the positive cable will strip
the ends back same again strip the ends back twist the wires together and we'll
put some solder on the ends same process
applying the solder
to the ends
being a bit late again some videos up this month been a bit ill at sunstroke
and I caught a virus as well so you're just getting over them
I don't want to moan so put some heat shrink over the cables there we split
into the positive side of the circuit to power switch trim the ends up with the
cutters there the side cutters
and now again our switch ready in this case there's three terminals on this
switch and we'll only need two terminals so you definitely want the center
terminal and 2 pi their side are there at the other two terminals B okay to
switch your circuit just on the outside they're just putting a solder on on the
outside terminal
now solder on the middle terminal we'll just discard the other terminal as we
won't be needing that
so one wire in one end
the other wire in the center terminal so like I said as long as you use the
center terminal you can choose which other terminal you're gonna use for
switching doesn't matter but you must use the center terminal on this
particular switch so just trying out the circuit with the switch in with our
battery and there we are lovely jubbly so that yellow LED is working and the
circuits working with the switch so we can move on and use that heat shrink or
put the lights are under the heat shrink and were nearly finished with the
project
so there's a heat shrink on the terminals of the switch and again we'll
use the light sir to activate the shrinkage
and his job done so of course you can put these lights into your craft
projects or whatever you want to do with the lights circuit you can extend the
wires if you want to you know you use as much wire as you need to cater for your
projects there's a battery through the red cable into the switch from the red
cable into the LED out of the LED into the negative cable back to the battery
and that completes the circuit you know I just fired about seeing what we could
do so I'm using the eyeball just as a demonstration just sort of close
occurrence there make the room a bit more dark
they are eyeball litter Bible I've got this resin thing I don't know if you
could see it picking up there but I want to do lights up the cracks in resin
casts and there's a silly little project I did with a an old roll-on deodorant
and you can see the switches in place there so the switch is screwed into the
container and the circuit is inside the container there's actually two LEDs
they're operating from two three volt batteries so that was just a fart around
some mock experiment and there I'm just messing around with her LED we've just
made there's another project I did there's a video on the channel on how to
make one of these LEDs as well this is using different types of LEDs or strip
LEDs and I surround a piece of acrylic you can use ordinary LEDs that we just
did in the video through that wish we just made in the video to lights up
acrylic engravings and there we are basic LED circuits with a switch so hope
you enjoyed and thanks for watching and see you soon
you