today's opening begins with three Jolly bargemin English dark mild ale from Stone Angel brewing
in Winnipeg they describe it as a silky smooth unpretentious session strength ale with notes of
toasted hazelnut chocolate and coffee hmm very nice nice and roasty first thing in this says
it is resistance hmm hope it's not futile let's see what we got here oh some little transistors
oh wait those aren't transistors these have these have six pins okay pt4115
what are these little power devices ten piece lot
pt4115-89e sought 89 in stock okay 10 of them for a dollar five plus a dollar 49 shipping okay then
oh it seems that they are actually a five pin device but this listing is not saying what it
actually does okay ah it's an inductive step down high brightness driver for LEDs oh cool
uh 6 to 30 volts in 1.2 amps current wow so there's what's going on inside we have
a mosfet over here and a gate driver we have a regulator a couple comparators
uh reference and a dimming buffer internally all right well there we go some application circuits
perfect so what do I need to make this thing work uh Square weave pwm I guess to the dimming input
um okay that is just power supply so we can ignore everything to the left here that's just where the
power is coming from we just need to feed it with DC we need a sense resistor we need a are you guys
not the shotkey diode and we need an inductor and depending on the current that we're pulling
uh we'll change the inductor I guess okay so a nice little part count to be able to drive
very big currents LEDs well that could be an interesting thing to play with
off to a good start here this says mobile phone adapters and converters okay that may
be less interesting but we'll see where are you
um okay this one is a USBC on that side and I can't see what that one is on this side
um hmm what are you oh that's what it is lightning type to type c adapter
charger adapter blah blah blah phones phones phones yeah uh dollar 48 I got the white one
they've got a bunch of different other colors free shipping woohoo
so this allows you to use a USBC industry standard standard everywhere device with
um accessories that only support the proprietary [ __ ] iOS lightning connector yeah and the reason
I got this is um back when I ordered it I was watching uh one of Julian islet's videos and he
ordered an accessory that came with uh with the Apple connector on it and of course uh like a
sane person he uses uh Android devices which use the global standard type c so he was kind of uh
stuck for a while with a device that he couldn't use so I decided that I didn't want to end up
in that kind of a predicament by accidentally ordering the wrong thing so I got me an adapter
moving around we have we have we have strip underscore two okay
it's not huh another thing that was inspired by another YouTuber these are UV a and UBC test cards
these are printed with different kinds of photo active inks that react to UV
a and UVC to show you when these things are being exposed to it
we got way too many of them because they're not one-time use items um I'm guessing that I tried
to order two and I instead ordered two packs of them oops anyway big Clive first uh showed
these off on YouTube or at least that's where I saw them and they seemed like a reasonable thing
to have for testing devices that claim to be UV a or UVC UVA being closer to the blacklight
UV and UVC being the one that actually does sterilization that is much less common in
devices even though the dubious devices always pretend that they have these sterilizing UVC
24 pieces UV c u v a test strips indicator cards UV test cards okay so I just I guess I must have
just ordered from a random seller I don't know why what I'm going to do with 24 of them but whatever
um these cost me 11.62 Canadian with free shipping I have to assume that there are
some others that are cheaper I'm not sure why I ordered such a big package of them whatever I'm
sure I'll use them for something at some point they claim to be a professional product to test
UV right made it a PVC put them into the into the testing environment and wait a few seconds
it will resume normal color immediately if you move it away with noise oh okay fit for common UV
and UVC devices sterilizer ones UV boxes UV bags and other equipment all right next in we have uh
what does this say it says integrated circuit okay I like the sounds of that already it's a can't
so we have a few good sized capacitors we have a couple of relays and LEDs
um what are you you are a photoresistor then there's some surface mount okay so we have
set both surface mount and through hole stuff going on a couple of potentiometers
so my guess just based on the components and not remembering what I ordered a couple months ago
is this thing is sensing Darkness or light and turning on relays in relation to that probably
though I don't know what all the red LEDs do and whatever it's doing it's got a couple of
ICS on there wow so maybe it's doing something a little bit more fancy than just turning on relays
when it gets dark or maybe not the two chips are 555 so there's our timing and a four zero one one
which I think is a logic gate of some sort okay so we have to do is look at the schematic on the
other side to find out those are antiates oh nand Gates they've got a little bubble on the
end so nand Gates but here they're just being used as inverters why wouldn't you just use an
inverter chip anyway um the two relays seem to be turning on the bunch of LEDs on two different sets
okay but yeah there is an LED there is the resistor the photoresistor and
uh pot in series with it so that is creating a threshold
trigger this series of inverters which Drive the transistor drives that relay
and then that drives this transistor which makes 555 do things and kicks the relay the
secondary way okay we'll have to see what they actually call that kit because that
I'm not quite sure what that uh series of events would be Street Lamp automatic energy
saving control system experiment kit electronic production Parts DIY smart Street Lamp control
right uh 2.47 with a buck 23 shipping so fairly cheap little kit for what you get in it I guess
and that is in fact all the components we got all right
does this describe more or less what's going on
there's the same schematic there is the parts there is the board yeah yeah
no theory of operation okay well I think we uh I think we figured it out more or less what it does
still not quite sure why but it's I guess an interesting demonstration of a few different
principles that should be fun to put together what was a combination of surface mount and
uh and through-hole components and the last thing in came to my mailbox this came from
a long time viewer long time subscriber gnu religion all the way from Little Rock Arkansas
he said he was sending me this that's how I knew that it was from him plus you know what
I hid there but he was a little bit cryptic in his email saying exactly what it is so let's find out
well alrighty then what do we have in here we have some 3D printed snakes
those are that's a nice print
these are well done these are all print in place models which means you literally print them
um where's the print lines just like that and they come off the bed already linked together
and all in one piece they're cute little toys
that's a nice model and you've got your printer very well tuned I'm not seeing a lot of bridging
and gaps and stuff like that well done now then we have this USB to pin headers and
I'm assuming that plugs in there yes it does or not pin headers uh whatever that connector is I
can't remember so many connectors anyway so that plugs in there obviously but before I turn the
light so it as it says and push the buttons I'm just going to quickly look at the note excuse me
all right so this thing doesn't have any secrets in the note so let's just take a quick look here
let's plug into anything that provides a bit of USB and try and Turn All the Lights Out it's a
game so he goes through a little bit here what's going on um so it's using an 80 tiny 85 and a PCF
8574 which is a eight bit or eight gpio expander that just communicates over the scl and SDA there
so he's not showing me all the push buttons here which I assume go to this guy
interesting well let's play the game it's actually before I do I won't note that this is entirely 3D
printed as well nice case in a uh I don't know I would describe that as maybe purple but you guys
know that I'm colorblind so who knows even the push buttons look like they're 3D printed cool
anyway let's power this guy on and see what happens
so that turns on one light oh there it goes
try and catch it on the Fly okay
oops what's going on here ah keeps putting on more LEDs
apparently the name of the game is to turn off all of the lights
without actually knowing how it works right
so that is the entire game just try and turn out all the lights
um what is that oh he called that a belt buckle plug okay um how to reprogram it sure I think
he sent me a link to the code for this I'm not sure if I'm at Liberty to publish it or not but
yeah every time it every time I do it it actually gets more difficult now there's
more buttons that I can push by holding it that could be a fun toy to Tinker with and play with
and uh yeah I'll uh I'll get in touch with him or actually um if he wants to publish or
put a link to the to any information about this down in the comments I'll pin that uh
and if he doesn't 12 then I guess it's just between me and him nonetheless and a cool little
collection of printed snakes well that was a fun little mailbag and a good assortment as always
um always good to get another kit in stock for what I feel like doing kits
this apple lightning-ish I think that's what they call it connector to USBC will probably get me
out of a jam that I least expect sometime in the future as long as I don't lose that
um these little USB test cards why do I keep calling them USB these UV test cards
um I'm looking forward to playing with those a little bit I picked up a UV sterilization wand
at the dollar store the other day anticipating these things showing up and then properly forgot
about them so I will play with them with that just to see if it's really what it claims to
be or not and yeah things like that in the future it's far too many of them but whatever
and then there's these little current drivers for high power LEDs dimmable
current drivers those could be fun to play with in the future too have to uh yeah
I like that and of course new religion thank you so much for the uh herd pack flock of snakes and
the uh cool little game nicely put together nicely packaged well done Bud um and yeah if
you feel like commenting anything about this down below please jump in thanks for watching everybody
as usually I appreciate that um thanks to my YouTube channel members and my patreon supporters
for helping me keep the mailbags rolling in and helping keep my beer fridge full of course and
yes just thanks everybody who keeps showing up to watch these things comments questions
points whatever down below in the comment section as always I will talk to you later