Once again, we’ve been doing way too
much shopping, so I need to do a big
shout out to PCB Way here for sponsoring
the channel. Without their support, I
wouldn’t be able to buy all this stuff.
But let’s clear the desk and then see
what we’ve got.
Okay, so first off, portable quick test
UV sensor, UV card indicator. So
interesting. Wonder why I brought these.
I think I was going to test out one of
my UV lamps. So, let’s get one of these
out and see how it works.
So, I guess
we take this out. It’s all in Chinese,
obviously. Um,
stick that there. I’ve got my little UV
curing lamp here. Let’s give it a go.
So, I assume this white area is the test
area. So, let’s run this. I think that
should be enough. Oh, look at that. It’s
changed color. So, yeah, it’s detected
the UV and it’s looks like it’s h
somewhere around here. Um, it’s not very
sunny at the moment in Scotland, but I
will try these out on a sunny day and
see how well they work for detecting
sunshine. So, interesting. Got a whole
stack of them. So, I will uh translate
this and do an experiment outside. But
as I say, at the moment it’s pretty
cloudy and it’s it’s fading quite
rapidly back to back to white again. So
interesting. So here’s another thing.
It’s a it’s a bag within bags. So let’s
uh let’s do this one at a time. So what
have we got here? So I’ve ordered a
whole bunch of um cogs and what look
like rubber bands and things for
building robots. So I’ve got a few
projects where I need some cog wheels.
So that will come in very handy. Uh
what’s this? Uh oh, more gears.
So, got another bunch of gears. A lot of
gears and some wheels. Uh all sorts of
stuff in there. Uh some linear linear
things. Looks like some axles. So,
again, we’ll be doing some robot
projects quite soon. That will come in
very handy.
So, somewhere I have a whole bunch of
these. So, these are LED filaments. Um,
let me find the rest of them because
it’d be quite interesting to have a look
at these. So, there we go. Um, a whole
bunch of them. Uh, let’s try lighting
one of these up. Let’s do I’ve got an E
here.
So, there we go. This video brought to
you by the letter E. Okay, I’ve got my
power supply set to around 5 volts and a
current limit of 5 milliamps. So, that
seems to be working if we short it. I
wonder if this little dash here means
positive or negative.
Ah, there we go. Just wasn’t making a
good connection.
So, I’ve got my current limit set to 9
milliamps and the voltage is around 2.6
2.7.
Let’s try one of the other filaments,
the letter S.
That’s working nicely.
Um, let’s see if we turn the current up.
How bright does it get?
So, that’s around 70 milliamps.
It’s not getting warm at all.
So, that’s 100 milliamps. Yeah. So, it’s
around 2.7 volts um forward voltage and
100 milliamps lights it up quite nicely.
You can still see the individual LEDs.
You can’t really see it on the camera
cuz it’s a bit washed out. But um if I
turn the current down, then you’ll be
able to see the individual LEDs on the
phone camera. Let’s see if we turn it
really far down then. Yeah. So, you can
see individual LEDs there. But anyway,
these are quite cool. Got a little
project lined up for for these LED
filaments. So, let’s put put these away
safely. They are quite fragile, easy to
break. Um let’s put them somewhere safe.
Next bag.
Well, more LED filaments. Put these with
the other ones. Quite a big bag here.
And uh quite a squashed box. This is a
photoc catalyst mosquito lamp. So, I
think it’s supposed to zap mosquitoes.
Obviously, it’s again all in Chinese.
Here we go. Uh photoc catalytic mosquito
killing lamp. Lightwave trapping
mosquito. USB. Well, let’s plug it in.
So, we have an LED light, air outlet,
power port, and a mosquito tray for
collecting mosquitoes. Nice. It’s quite
plasticky. Very lightweight. Oh, there’s
a teddy bear embossed on there. Oh, it’s
running.
I can feel a small breeze.
It’s interesting. I wonder how this
works.
Hm. We’ll have to catch some mosquitoes
and see. Uh, it’s drawing
.02 amps.
Yeah. Interesting.
See some LEDs inside there. Obviously,
that’s to attract the mosquitoes.
And then does it zap for them. We’ll
take this apart at some point. Find out
what it actually does, if anything. What
else do we have? Some reusable cable
ties. I need to tidy my desk up and get
my cables organized.
All right, what’s this? Ah, it’s a
camera module. So, I ordered this to
play around some more with USB UVC.
So, the reason I got this is because
it’s got um it’s got pins, breadboard
friendly, or actually, is it breadboard
friendly? Actually, not really. probably
more cable friendly, but I wanted to
hook it up to a normal ESP32 module just
to play around with cameras that aren’t
actually built into a module, but it
looks looks kind of nice. An OV 7670.
So, we’ll add that to our project list.
All right, what’s this next thing? It
looks like more LEDs.
Oh, yes. This is a COB strip. So, let’s
try powering this up. Wonder what the uh
voltage requirements are. doesn’t really
say. Well, let’s uh turn on the power
supply and see if we can light this up.
Let me turn my current down. It’s on
very low. 10 milliamps. So, it’s
probably not going to light at all. I’m
not even sure how much voltage this
thing needs. Oh, there we go. So, that’s
uh that’s around 10 volts we get it to
light up. So, turn it down. Yeah. So 10
volts and that’s at 15 milliamps. So
let’s um let’s bump up the current.
There we go. Getting brighter. Let’s try
bumping the current up. Oh, there we go.
So
up to 300 milliamps and it’s at 10.65
volts. There we go. So it’s probably
supposed to be 12 volts, I should think.
How warm is it getting? Not that warm.
Yeah. So that’s that’s 600 milliamps
now. 700. Yes, I suspect this is a 12vt
um cobra array. That’s pretty nice.
Quite bright. Um let’s how bright can we
actually get it. So that’s now one amp
going into it. It’s one and a half amps.
Not too warm. Two amps. It’s pretty
bright. So I think we can feed in uh
quite a lot of amps into this. Um should
really unroll it before doing this. So
I’ll I’ll stop this experiment now, I
think, before we set fire to anything.
But that’s quite nice. I might do a
little lighting project with this. That
might be quite fun, right? What are
these? Looks like some key ring torches.
Um, look quite interesting. Um, how do
you turn this on?
There we go. Very bright light.
Another bright light. And
police lights. Flashing lights. Red,
blue, and then um Oh, alternating. Nice.
Well, that’s quite nice. Nice little
torch for your for your um for your
keychain. So, I’ve got got a few of
these. Always quite handy to have in
your bag um just in case of emergencies.
So, they look quite nice.
Don’t know if it’s worth taking one of
these apart at some point. Does feel
quite rugged in construction. Um yeah, I
might take one of these apart, see how
see how big the battery is and maybe do
a bit of big Clive reverse engineering
of them.
Now, now this is interesting. I remember
why I brought this. It’s not electronics
in any way. Um, but I was quite
entertained. If you look here, please
enter the text content needs to be
translated. I was just uh slightly
tickled by um by that. Um, no discs on
the Chinese manufacturer. I don’t speak
Chinese, so I cannot criticize at all.
Just think it’s quite interesting when
you see things like this. It’s kind of
kind of amusing, entertaining. Um,
they’re actually quite useful. We’re in
the be well region actually bit low
temperature. Low temperature not quite
be well. Um although our humidity
comfortable. So that’s not too bad.
We’re comfortable and we are be well. So
I thought that was quite entertaining.
Bit of mistransation there or complete
lack of translation. Right. What are
these two things?
Ah yes. So these are watch lubrication
um wand type things. Now, I saw these on
another channel. I’ll put a link up
somewhere to the video I saw these on.
Um, now they’re quite useful for doing
things like dispensing um, solder
resist. So, this is really tiny. You can
barely see it, but you put the solder
resist on the end and then you can just
paint it on. They are designed for
oiling watches, so they’re really meant
for dispensing very tiny amounts of
liquid. So, really handy for PCB repair.
But I say there’ll be a link somewhere
in one of these corners to the video
where I saw those. Okay, got another
bag. Um,
more LED filaments. So, various shapes
and sizes. So, I got love hearts and we
got stars. I think these are the ones I
actually intend to use for the project.
Um the other ones were were just there
for spelling out names and stuff, but I
think these will be quite an interesting
project that we’ll do at some point.
Right, then we have this big bag.
I don’t really remember
why I ordered this, but what it’s
supposed to be is a sheet that changes
color due to temperature. So, put on my
hands there. Yeah. Is it working? seems
to be doing something.
Put a hand underneath. Yeah, there we
go. Interesting. There’s my handprints.
Um, yeah. I just thought it was a
interesting piece of uh paper to buy and
have a look at. So, not sure what I’ll
use this for. I don’t think it’s
actually particularly useful for any
electronics type stuff. Maybe you could
lay it on top of a PCB, see what’s
getting hot. Uh, not sure. If you think
of anything, let me know in the
comments. And then finally, we have
another very squashed box. I think the
uh delivery guys at every seem to enjoy
jumping up and down on AliExpress
parcels. So, this is a video capture USB
thing. Now, the reason I got this is um
my microscope will record to SD card,
but it doesn’t record any audio. So,
it’s quite annoying trying to sync up
video when you have to try and align the
audio just based on finger movements and
things like that. So, my plan is to take
the video output from the microscope,
then I can record it on my laptop and I
can include audio. So, let’s give this a
quick go. I’ll get everything wired up
and then hopefully I’ll be able to show
you something under the microscope.
Okay, so I’ve got the uh camera wired up
and uh I’m zooming in on a nice little
heart rate and oxygen monitor device
that I’ve been playing with. So fingers
crossed the audio should now be
completely in sync with the video. So
I’m now sticking in a little bit of wire
and I’m tapping the thing. So there we
go. Moving from the right to the left
and from the bottom to the top. So, this
should make recording microscope video a
lot more easy because at the moment I
have to record the microscope video,
record it to the SD card. And then
somehow I need to uh match up the audio.
But uh hopefully this is coming out
nicely in the video. We’ll see when I
actually um do the recording. And here’s
a nice little uh u uh OLED display. Um
can’t really see much there. Not that
exciting. Um, but anyway, yeah, I do
like my microscope. It’s pretty cool.
So, that’s a LED there. There you go.
LED. Anyway, that’s going to be really
useful. I’m glad I brought that. Well,
actually, I’ll see if it’s useful when I
actually try and edit the video together
and see if it actually recorded
properly. But uh on the screen it looks
pretty