Hi Welcome to everyone's favorite segment: mailbag. Let's get into what this one is from. Oh never nobody good on your Neve from the United States of America Well we got to let her know it's a real mailbag. What's new this month? between June 29? Mmm.

Custom-made circuit boards from Pedia? What? what it's It's spam. It's advertising spam. Its goods. Got my ol' bag on it.

Bloody Spam. What? Hats off. Least they went old-school custom made. PCBs As if the PCB spam on the forum wasn't bad enough, you're not aware of the Eevblog forum.

Every man and his dog manufacturer PCB manufacturer tries to spin the forum, set up some sock puppet accounts and astroturf Fein and all sorts of crap and and now I'm getting it into my obey. but there's like kits and other stuff I don't know like there's no note if it was like I no no no. So there you go. I'm not gonna show you the address but I'm yeah.

custom 8 circuit boards and then then this like put speakers and other stuff I Don't thank you hey for originality. Good on your Rea Ackerman from Phoenix Arizona I Don't want my viewers in Phoenix Arizona I've gotta open it from the bottom. all the electrons are gonna fall out there. we go padded for our protection.

You have a note. oh it's a little, it's a little number Arizona the Grand Canyon State Been there. been to the Grand Canyon in Arizona been to meteor crater. What if include a photo it's from Sherlock Holmes Get it Holmes Raised here all week.

Good on your right. Greetings from the Valley of the Sun thought you might like this for your mailbag. some won't Keep up the great videos. thank you very much.

Your look owns what all my viewers in the Netherlands this one's from Martins That's it. Just Martin's good on your Martin's I'm kind of rings a bell. Let's see what's in here. That's a shirt today.

This is a shirt I've been meaning to send you for almost a decade. Better late than never. It was designed in a hackerspace of once found in the city of The Hague in the Netherlands I've moved since and haven't been there in a while. I'm sure it's still around.

Thanks for entertaining this nerd for years. No workers mate. Let's have a look. I think I Like it already.

If it smells like chicken, you're holding it wrong. Oh, we don't. Winner chicken dinner. Alright, get it, you're awake.

Fantastic! That's from Reve Reve Space. Here you go Beauty! Thank you very much. Joel From Solutions Design and Prototyping in Brooklyn New York But of all my viewers in Brooklyn New York Let's go all right Tim and Pam Not a Tim Tam - Tim Pam pants Tim Pam Hopes up Helps have I opened up the right way. What do we got? We've got a it's obviously a USB doodad in a static shielding day.

And that static dissipative rubbish from a static shielding. And it's a that's like a 3d printed case. It's the Tim Pam. It's got a serial number on the bottom, it's got a lanyard, it's got a rocker switch on the side has it.

It's got an on-off button, its fleet a fleshie flashing, so it's obviously a building rechargeable. and there's a a micro SD on the side and a couple of things on the oh no, no, no, nothing. Let's go to the website. So this thing is the temple if I'm pronouncing that correctly.

Anyway, the temp Andy I assume that's a a serial number or whatever. unique I did fire. It looks like a 3d printed case. It's got audio, in and out, and a couple of headers and and stuff like that.

Well, let's have a look at what the this thing actually is because there's no note with it and googling. Didn't immediately pick it up. but tympanic is something to do with the ear anyway. it's like an open source cochlear type image process.

or even though the cochlear is the implant thing at some sort of open source development system. and it's a temp an org. but like if you go to WYSIWYG Tim Payne org, it takes you to the shop. so there's like I don't know.

Okay, open-source hearing. It's cool. Okay, it's got it. This is new.

It uses @nz processor in it with codec, bluetooth, and on board members. Mike's a fantastic plus. It runs Arduino IDE Family I Think it's two hundred and ninety nine dollars. so three hundred Yankee bucks by looks of it.

which is pretty pricey for an open-source you know, for a open-source Hardware board like that. But of course if it does the business then it does the business. and I won't bother opening the thing because here it is they've already torn it down for us. It's got the Bluetooth module and everything are designed in Brookland made in Taipei Taiwan and okay, it's got a free scale I'm 68 whatever in it and it looks like it's got a codec in it and stuff like that.

There's inputs and outputs USB and I think this: I think it has a battery unit because like we powered it up, it must I can see the battery in the back there so no worries I probably got a charger year. There's the battery connector so there you go. It's got a TI part there, the TLC 320 audio codec. Apart from that, like okay, why open come into open sources gravely of making a research inaccessible blah blah blah This is the only information we've got here and I can't expand this I can't get anything else.

there's no about a page or anything. all I can do is subscribe I can buy the thing and I can subscribe and it's all about this open hardware and talks about algorithms so this looks like it's got some nifty looking software with it. but no like I can't download anything from this webpage I can't I can't do anything. it's just a shop.

so I don't know it's sorry I can't do anything with this you know Here I am at the right website, documentation, code and documentation Tim Penn org I'm I'm I'm there I'm there but all it does is is take me to this so in in stock. Okay it looks really cool. an open-source Hardware audio processor here in type thing. Um but the software.

It kind of looks at the development in the face looks jazzy. Research user interfaces is really cool. You can do some cool audio research with this by the sounds of it but sorry, do it with it. No wait.

hang on. I Just googled Tim Pan Github and I I managed to find it. So about 12 repository is the Tim pound library. ok audio design tool ok hardware and the shield.

Ok so you got the open hardware and we've got the designed hast HTML designed to all take HTML based Is it? it's web-based Two years ago Wow last year this is like old. where's the hardware at so 5? Ok so the fire The hardware is more recent. schematics all there but I don't know. index.html downloadable coders in zip file Copyright 2013 IBM Corp they're obviously using some IBM license I'll that's Apache is it or something? I'm not a github person like audio HTML Audio floating point 32 HTML it's it seems Audio analyzer HTML Wow Ok so like all these HTML files I don't I I'm not sure if I'm gonna spend the time in this mailbag to try and figure this thing out.

I Can I know I can download the whole lot and run the index.html Let me. yeah, let me at least do that. Download zip Wow Okay, here we go: Audio Design Tool Wow Let you easily draw a system to process 16 bit 44 Killer streaming audio. I/o Adeno Squared We know Scheduler runs an export offline, uses Tool does not use a server.

Standalone copy has provided. Yep, that's that's great. I Like that it's okay if it's web-based I Love that. Well, in our browser a base the fact that it's local I Really like that.

Nothing wrong with that at all. III to s Audio sidebar, keyboard shortcuts What do we do? Okay, this is like yeah. I got a biquadratic filter. Okay, that's that's cool.

Wow I'm like yeah. Okay, so you can drag-and-drop you know these and then you can draw between them. This is really groovy. I'm liking this right? and then then you've got some game like GUI but can you add night you can't put two together and mixer pink noise okay noise sources calculation ah envelope Wow block wise FFT This is very impressive.

Record Cue Play Cute. This is very impressive for audio research and the fact that they did this in browser-based and thoroughly And press control I Can't do anything. Maybe because we're not hooked up? Okay, well I plugged it in sorry my cables not long enough. I'm I've got a red LED on it.

that's on and that's it. Nothing went a little loop so it didn't like auto detect as a serial port as a as a maybe I'd expect it to be like an audio interface, perhaps that's you know, audio in/out you know kind of thing. like a windows-based thing. but no, nothing.

so maybe it's not programmed. I I Got no idea not seeing anything in audio interfaces here. Biometry I Don't have a biometric device? hello face. How do I remove that can I remove that I Want a hollow face disabled device and you just say we'll stop it to functioning? Yeah I Want to disable that? What's up Windows hollows I Want that rubbish? Not there zippity-doo-dah there.

So I I don't know. So yeah I don't know. This seems like really impressive, but I can't do anything with it. Sorry, thank you very much Bret Walker From Electron Inks: One word inks lit not electronics.

Electron Inks get it cool incorporated in Austin Texas UPS Geez the Yanks Having a field day today? Let me tell ya, let's see what. we got a note on top. It's already directly like facing up so I can read it. Very nice.

very well packaged. There we go for those playing along at home. I Haven't read it yet. Something just went.

What? whatever it is, it's a better unit so it's got beater on it. Oh Electron inks. Oh okay. cool.

So these are gonna be conductive inks to draw circuits with upside down. Well, all the inks go. thing's gonna fall out is it? So these are the inks. Are they all the same? Have they got like different widths or something like that? I Guess we'll find out.

This one is this like it's any razor or something like that. Draw your own circuit boards. I Used to draw my own circuit boards with a Dello pen. Don't that? that would have been a trademark? I Think back in the day, please correct me if I'm wrong.

It was the Dello brand. Was that there? Was that the trademark? Anyway, um, age is a plus. Circuit Scribe circa Scribe Basic kids. Well this is cool.

This is obviously something for Sagan Sagan's eight so I might leave this. Maybe I'll give you a quick squeeze but I might leave this until Sagan has a go with it Sagan Review us like that. dim light, split more. Oh ah.

Quality glue binding on there. that's a bit. how are you doing? Thought it was like a pullout house. Like a little arrow there that list.

So I thought okay I pull that out. but you obviously don't. Which packaging design fail. Yeah, by having that arrow there, pull that and yeah, all your glue comes.

Oh don't you hate it When your glue binding comes off, it's a fluffy thing. alright. and then oh, and then it comes up. What? what? So they've got nitpicking about the small things.

I Can't help it. so the arrow points it out so it doesn't pull out like this. but the thing actually slides out the bottom. So alright.

so good. Scribe: Oh, isn't that neat that that looks like recyclable cardboard packaging? I Really like the look of that that looks carbon zinc. They've got their own custom battery. so yeah, it looks like you get one pin with it, plunk them down so you draw them on over what just a regular bit of paper and you plug them down.

Oh alright. I'll have to have a quick go with this, but maybe I cannot have got the time saying it's very busy. very busy eight-year-old Let's see if we can gather and do a review video of this Anyway, let's have a quick squeeze. It's included some new silkscreen ink.

so I assume that's this beta stuff here and the new circuit Scribe Pro pen. Then we've got our regular Circuit Scribe ink pen which is 1 ohm per centimeter. I've done a video on conductive square surfaces I'll link that one at the end if I remember and down below. Definitely check them out cuz that's actually really interesting how that's actually defined and it's also useful for filling in wires on do-it-yourselfer PCBs as well as fixing any broken traces or ground connections on PCBs Awesome! So you know, even if you're not interested in like the educational kit, something like this, probably worth having one of these conductive ink pens in your kit just for a you know, repair purposes and things like that.

So let's have all the squiz. So there you go. You can just draw on to paper or other materials, can do glass and things like that as well with the newer better ink, and it looks like they've just got little magnetic modules that snap down so presumably we get the stainless steel thing on the back of it and then you can just draw the stuff and then hook them all up. and this is a real I Rather like this example here.

If you're designing a rocket, you know it looks like is that a buzzer up there? You can have that, you know LEDs Light up and then thrust comes out the lids here and they light up and boom the rocket takes off that you know that's really quite neat. It looks like this is all printed on recycled paper by the feel of it, so that's really neat. I Like that and welcome to Circuit Scribe I Won't go through all the details. You can have a read for yourself and just the first circuit.

light up a lid. That's what you want. none of that you know what is electricity are rubbish right off the bat. it's like hook it up.

The LED turns on. Okay, let's talk about voltage. Now it's They've got it the right way around and conventional current flow. none of that electron flow rubbish may talk about.

You know, a bi-directional LEDs and things that's really nice. So it's just all basic stuff. Wait, it looks like we've got a trimmer pot up there. Do we? It's whoa.

A blinker module. It's about it. Start here: Circuit Drawing kids. So that was the inventors notebook.

So this is a few simple projects. I Don't know why they have an inventors notebook which is like two different things to explain the same thing. I'm not sure what's going on there. Yeah, Pure Pure.

We've got another inventors notebook. Okay, once more. Okay, they're going to Resistance which you didn't have in the other one. blinker my NPN transistor.

There we go. We're getting into their now fantastic multicolored Leds color palette light sensor thing. Okay, so this is looks like this is for more advanced kit. There you go.

Okay, neat in the box. we've got one pen. I should throw in a couple of pins. Come on, don't know how much the Pens I don't know how much the kid is.

Six hours times 1.5 volts equals nine volts I Love how they tell you that and that feels and smells like a carbon zinc battery. Anyway, we've got our battery took up and they've got the little magnets on the back there. Put some little LED modules. we've got our blinken module and there's our potentiometer.

It's a nice carbon slide job' very basic kit and we've got more instructions. Gee's circuit stencil - it's a stencil so that you can draw the pads not only the correct size, but the correct distance apart module formats. There you go, someone was thinking and stickers. You give stickers to an eight-year-old and they'll go everywhere.

But if it's supposed to go, tie me kangaroo down. Tie me kangaroo down. why won't my doodle power on? Well, let's see if we can get out due to working for starters. So I'm actually yeah, quite impressed by these pins.

They look and feel like you know, real pens. Let's see what happens if we draw one down here like this. There we go. It was supposed to fill it in.

doesn't look very shiny. Does it do it on? Why? I'm just doing it on the note that came with this. not sure how thorough you're supposed to be. I'm not sure how long this is gonna last.

shake if settled. it's there though. it's silver. It's just I'd my bright studio lights here or reflecting off this that just doesn't but it doesn't look that bright to my eyes.

That's all. So now we have to draw in our circuit. so let's just go like this and around like that. and let's just draw like that and let's give this a bow, shall we? So we've got our lid and where's our battery? bi-directional so we shouldn't have to care about the polarity.

See you? Afraid of protection? What might? our pair is on? Let's not lighten up. We have a continuity problem. Probably only true. Like a single line there.

Ah, gonna have to troubleshoot. Why won't my doodle pair run? Oh, they thick enough lines and at least the thickness of a penny thick is good. Okay, no worries. just as a sanity check.

Oh yeah, there you go. She does work. Right off the bat, it hasn't worked. All right.

let's measure our pad here. Our pad certainly works. There you go. Seven point six arms.

Do we have continuity over here? Ah, there's enough ale. There you go. Do we have caught your D in our loop? Not what our trace isn't thick enough? I Guess I Can understand depending on the type of your paper that you have that you can get a break in there. This is good though because of course you learn electronics by failing by having it not work.

You'll learn a lot. Anyway, there's a much thicker trace, right? I Think that they're sharp probes. Don't put sharp probes on paper. I Suspect 93 Ohms Wow Yeah, that one's definitely cactus.

Good thing about this. Gotta teach kids too. Here's a multimeter to check continuity. that's for sure.

Should include a $2 multimeter with each kit. Uh-huh Now we're talking. this will be a winner. Winner chicken dinner.

There we go. It works. Beauty. Flip it around.

Go like that. Bob's your uncle aha? So this beater? 125 millions. so I presume this is going to be more expensive. This has got more silver in it.

although the weight of silver in here is our for B's dick I suspect, but it's just like you know, gold on a PCB I would imagine I don't know how much weight you know I mean it's certainly not an ounce. So anyway, this is used for a right, you know, screen printing and stuff like that. So yeah, you know you could like laser cut a mylar sheet or something like that and there's an Ood. Then you know, squeegee this on to create your circuit because it is supposed to dry instantly on any surface.

So uh-huh you got to squeeze it. There you go. That certainly draws on their draw a square wave. There you go.

Supposed to Well I don't know, that's pretty thick. Yeah now I wouldn't have expected that - got it on my fingers. And about the paper over here. now it's smudging so that one that one's gonna take time to set but that's the one that you want for are doing your repairs on your PCB traces.

So I just drew a trace about Yay Long 79 16 Ohms, it's not terrific. Is it okay? I'll get some of the good stuff. supposedly smear some on like that. I Mean that's a thick as trace? Okay, that's not completely dry.

Yeah, especially if it's thicker. If it's thicker, it's probably going to take some trying to dry. But no, we're talking 130 Ohms. No even close together even where this thick part is.

40 names, no. 25 milli ohms. hmm. File I actually have to mix it.

sort of like changing color. They're suspect we may not have gotten much of our silver. that's a big thick as trace. Look at that.

If you watch my video on our Ohms per square, you'll know what we're dealing with here. So I haven't let that dry yet. I'm just straight in there. Maybe I do need to let it dry? Okay, should dark.

it's silver on my probes now. Okay, I've actually come back the next morning. There's a heck of a difference. Now we're talking yeah.

Point One Five over here. So yeah, there you go. Now it's doing the business. so they're my probes.

so I don't really have to short those out. Here you go. Point two. So but yeah, like 25 millions per square? You know? Yeah, and it's it's low enough for a trace.

I mean we're not talking power traces here. Anyway, this circuit scribe kit that's pretty cool I Don't know about like they're just the simplistic one like this. I Present: Think you should just have like the more advanced one with the NPN transistor and you know, make it do a few more interesting things and just this have a few different options. Shouldn't be in advanced kit I Don't know what the price for this is I'll add that input Yeah, that's really neat and these are conductive ink pens.

They're available from quite a few companies I'm not sure the actual brand names you are sell them these days, but you can actually pick them up. But yeah, this is another one and there's better one. I'm not sure about it. so writing 25 millions per square.

but yeah, maybe some more experimentation. It might have to be a certain thickness or something like that. So anyway, it does work when it's cured. So anyway, worth checking out.

Links him down below. Hang on Solutions Design and Prototyping and this one's from Solutions Design and Prototype in what bigger I Know it. it's got a note written on pulse sensor. Oh okay, hang on.

maybe late eighties early nineties I think it's 70s so look I could be wrong. my smell way off today. we love Sony Bits a kit that? what? is it? Some sort of it looks like some sort of audio musical automatic editing control unit in Reverse Forward Biohacking Village pulse sensor and some sort of open source hardware thing I'm Joe Murphy I add a bio morph. Great! What's an adder? Bio more? Murph Murph Murph Bio Murph Yeah What? That is great in Strickland.

Been watching for years, far in the future. in our key, archaeologists are digging up what used to be Australia. They will come across your bunker and discover a treasure trove of technology from their ancient ancestors they made because it is literally a bunker buried under the ground. Happy! Now something to donate.

The Sony Video Editor So this was found on the sidewalk two years ago just in the neighborhood. There you go. Digital Video anything. I Started a pulse sensor with my friends.

so let's have a look at this pulse pulse sensor. Calm. winning. URL And no, I'm not at - rubbish in there Swag from last year's Open Source hardware summit.

Cool. Yep. Open source hardware blur, blur, blur and the Open Hack project without a Seekers sees already taken. I'm sure it's an open source fitness tracker.

Cool. Special edition being sold as a badge for the Biohack Village at this year's Def Con At 27 Open Hack without a C dot-com There you go Github Open Hack without a see. Also also miss the fundamentals Friday ease segment. Yeah, a lot of people do, but then a lot of people complain that and it's boring.

So yeah, I'll still do them occasionally. Just found an RCA to BNC adapter on my bench here. I guess I was using it for something I find stuff all the time. Well right.

this bad boy doesn't really do much on its own. It doesn't do anything on its own. You've really got to hook it up to the like editing, you know, control system and it's the RM 444 those playing alone home, hence why up? P I don't know processor or something like that. frame 25 or 30 frames per second pre-roll time as small watch don't really get that anyway.

Direct step reverse I don't know I won't to pretend to know, but look at that feel that custom job II And that's really those pins are really tarnished I Really haven't survived well at all, have they? Wow Alright, squeeze in here. Is that going to lift off? Yep, we're in. That's really what that vintage smell, even though it's from the early 90s. Let me get the ribbon cable out, but we're in like Flynn Oh yeah, this has seen better days.

Look at that. Wow, that's terrible. Muriel Anyway, classic, double sided Jabba You've got all our displays up there. that's all well.

like front panel in a face board. Then we've got our encoders down here. a purely optical. Are they resistive? Okay, what looks like as we got one photo sensor over here which detects the little cutout there like an end stop thing and there's a look up little contacts, metal contacts down in there.

so this is probably some sort of little Hall effect sensor or something to detect those, so that's interesting. Anyway, there is a center detent in there and the main PCB down here. look at those ceramic eproms, don't you love those? Beautiful and sharp I Love it. Well, I don't know sharper in this market.

but yeah anyway. I'm Sony usually roll their own star. the Toshiba chips Mitsubishi yep, that's the old Toshiba logo. In fact, most of the logic in this is all.

oh yeah, this smattering of Mitsubishi but mostly Toshiba Wow Whatever happened a couple of the street discreet trainees, their big input decoupling cap, and really, you know, not much else. It's just a real whole bunch of just discrete logic stuff. really? I mean we're gonna processor. damn, you know it is processor controlled LH o 6o sharp I was that 80 CPU There we go.

Yeah, 780 fanboys go wild. Oh and I miss that? this is that. a TC TC and a whole bunch of configurable I Can't get those out, but the hope they do come out a whole bunch of are configurable pin jumpers like that. How much more you can say about that? really? As a regulated down there, it's mounted back to the metal chassis and they got like a metal frame in here which just sits in the plastic base enclosure.

like that. Very remanent, reminiscent of you know 1980s vintage are Pcs, but this is early 90s manufacture, but probably you know dates back to an earlier design. Something like that, so it might be you know, carry over, so it could be just some sort of you know legacy product. There's a lot of, these things are, you know, they they evolved over the years and things like that, and they don't often.

Yeah, change the architectures much, if at all. So yeah, like could have been designed in the early 80s and using original firmware and processor and logic and all that sort of stuff. and then they just, you know, make improvements over the years. But yeah, they'll sell on this into the 90s.

ie. a service manual I found for it is dated 1998. So there you go. Okay, and this thing is a Pulse little fingertip pulse Sensor.

So it's basically one of those our Pulse Oxi meters I think I Don't know if it's just pulse or whether it does the oxygen level in the blood as well because it's basically got a little reverse mount infrared LED there and you'll see these in hospitals I Put them on their end of your finger and it can measure the amount of Hebert hemoglobin in your blood with the infrared LED when it shines through. So yeah, it's a common thing, but you can also get hate hence the name. Pulse Ox E meter measures the oxygen level and your pulse. This one might only just do pulse.

So yeah, neat. Anyway, that's at Pulse Sensor calm. Yep, it plugs into an Arduino I won't bother. like getting Arduino out and loading up sketches and making it work and stuff like that I'm sure it does I mean.

So let's since at 2011, check it out and this is an Open Source Hardware Moose. It's a Moose. Fantastic! So there you go. It's a kit, so if you want to check it out, Go! It's got the github bio morph is the user name and neat.

I'm not gonna build up the kit here on the mailbag of course, but it's got a little prototyping area and this was a badge thingy at the Open Source Hardware Summit. Cool, but read the instructions before you solder. There's a trap for young players in there. What would that be I don't know I might have to build it up now see if I get trapped.

Well they put the bloody Et test symbol on there, the electrical test by user 31 I guess to a line 31 or whatever and they put all the requisite stuff on there as well. like yeah, it just ruins it. And last but not least, we've got a little open source fitness tracker, The Bio Hacker Village at this year's Def Con 27. So got a little light sensor on there which is once again would be measuring your pulse and a teeny tiny display here and that'll just.

it's a fine pin pitch in it. So just sitting there like that, there's a little 3d printed case for it. Oh there we go It powered up. Open Hack hit Bio Hacking Village DEFCON 27 Nice.

Like how the battery just fits under there and that should get all that on. the battery. doesn't quite fit. I've got to I bend it over to get it to fit in Bugger haha That's hilarious.

These are these little pin mounts for the watch band that's a bit different than how I did it on the microcurrent. I use little machine pin sockets actually glued onto there but lay 12:06 surface mount job' on each side and a little cast elation on the side of the board. that's kind of novel. Done it.

You know it's not gonna be super strong, but man there it is. isn't that groovy. I Like it. Version Version 1.00 Never trust a 1.00 Sync Me Sync Me: I could how do you sync it I don't know.

Okay, the documentation was a bit lacking on the website, but I Went over to the github and found that there was actually an Android app. So I searched for it and sure enough and it's a Bluetooth you thing. So that's obviously the code that we need to get in there and it's found it. It uses a Sim be your processor in it which is they know it's obsolete basically.

but you know for something like this, it's like I'm kind of like a one-off thing. Didn't matter. so let's connect. Oh do we have to click that? Okay efore f6 I Know that's the yep, yeah, we're connected.

We're in like Flynn Are we we're connected. Zero bytes, hex, time pending data. Okay I'm just gotta wait. Oh look there we go.

Capturing heart rate. There you go. My heart rates gonna be a bit elevated. I'm shooting a video I'm normally got a quite a low resting heart rate see what it is and I've been walking across the lab here you know and I walk out pace.

come on is 11:15 it's that time right? I think it could be 63 beats per minute? Yeah, that's about what I'd expect a little bit. it's elevated and number of steps. It's got an accelerometer in it of course. and there you go.

So let me just walk across the lab and gets the battery voltage as well. Neat. So alright let's walk across the lab. Here we go.

Swing my arms. how many steps like 20 steps or something. Total Steps 40. Oh yeah, there you go.

So did that consume you? Saw they go up in real time. Anyway, it's supposed to have like a display stuff. Heart Rate: Yeah okay, no. where's L Is that graph? load history? Any weight? This wasn't designed as a complete product, of course.

it was just like a a hack badge theme for the village so that you can hack around with it. That was the whole idea. So heart rate median 63. Let's see if I can get it up.

What is it now? Come on. hello McFly No, What's the deal there? Hmm. Anyway, it's supposed to have some graphs and stuff. Is it run out of battery? So what's going on to have to charge it anyway? that's very cool.

Thank you Biome or fake a a Joel for that. Check the layout link down below. Thank you very much Marius shift from Deutschland I Don't want my douche Linda viewers and it's a stroll Ian Stroll a lien Get it still got II know why cuz they know who I am stray. As a small country, you can just send it to that crazy Aussie bloke Australia I wonder if it'll get e God sings tape the buggery rap.

that's that's the digi ke rapper. Yep, that's the cheque packaging materials for product. You get that in you and your digi-key referee. Stop because they can go Go Go Mister! Whoa Yeah! I Do Not have a Faber-castell calculator.

Faber-castell Oh wow, look at that. Oh look, it's got a slide real thing on the back. Sweet! That's great All the slide rule aficionados and tell me if this is a decent one or not. I don't know I was not brought up on slide rule sorry I don't really have an affinity for slide rules I Used to have lots of slide our calculators for you know, for various engineering stuff and things like that that were quite commonly used to make the cardboard wheels.

and you used to or your cardboard slider and ever and you can calculate stuff I Kind of got a kick out of those, but I was never really sorry I was brought up in the calculator age so it really had us not that old contrary to what my grey hair tells you. Faber Castell tr3 look at that winner winner chicken dinner LED Bubble display not working or hasn't got the batteries. It is a scientific job' looks like a four bang a bit. No, there's all these shift functions on there that's doing all right.

And on the back, a slide rule for you slide rule aficionados: I Won't pretend to know how to operate the slide rule, but let us know in the comments down below if that one's any good, it looks reasonably comprehensive. We've got our trick functions over here, got our log and our trig functions their exponents. I'm sure there'll be many slide rule aficionados. It will tell us the capabilities of that and the you know the quality of it.

I guess and the operational functionality looks reasonably comprehensive. but I don't know why you need the slide rule when you've got the confuse Iran top hmm and of course it's made in Germany I'm not sure what's supposed to go in there. Hmm, it's not battery I Can't see in battery terminals? No wait, that is the battery compartment. Look at this.

It's got tada these contacts on the bottom there. So yeah, it was a battery that slid in with the contacts in the battery. So some sort of some sort of custom job'. check out that chip.

They got it that's in a board that's in a board cutout that's Faber-castell surface mount and now that right angle trace rubbish. That's all. ghor. Gloriously freehand and I wonder who to Faber Castell? we're all their own stuff because I Like Faber Castell I know I'm for making their pens and pencils and things like they get somebody else to design the ASIC in this thing.

Anyway, it's a complete module like that. I Rather like that it's just like clip in and that that's neat. Alright, let's power this puppy on. I think I got the polarity correct on there and I've got set it to 3 volts cuz me sounds right and a 50 milliamp current limit.

So oh, hang on. power supply on. oh hello. I can see a digit on there.

It's drawing 25 milliamps. So does that mean the voltage has to go up a bit? 4 volts, 5 volts. Yep. Ok, it works.

Oh we know. Winner chicken dinner to square root of 42. Nope. Nope.

How do you do that? Wow. that. digits much brighter than all the others. One? well no.

it got multiple key presses there. Oh, it's not a happy camper. Why is that digit brighter? and now it's not. Oh, there's pie.

There you go. Yeah, there's something wrong with that digit. I'm not sure what the deal is. it's drawn 43 milliamps at 5 volts.

Oh Check this out. One plus two equals a 3. I'm sure I guarantee you it showed five before I Don't know if I Don't trust Faber-castell with your calculations. Stick to the slide rule.

That's maybe why they include it Now we've got to figure it out. Bit of detail here from Marius it was units not many sold discontinuing the same year 1975 allegedly was a rather high value as collector's item today. Well, okay, better put it back together, thank you very much. Marius the last attempt of combining new electronic technology with the established slide rule.

I Guess yeah, it was a familiarity thing. It obviously didn't stand the test of time. A noob anyway. Oh, there you go.

I should have read the note. first coin holder fork. Why? for coin cell batteries presumably used by my grandfather in his life later years and no one really knows anymore. Cool.

Anyway, it kind of sort of works. Hmm. this one's been here for a while. sorry RP is somebody I can't make it out Anyway, our from the old dial I Think yes, sorry I'm here for a while so thank God ain't no and it seemed whoa hey hello I don't shove that 7-channel generic thermocouple reader.

It's done in Kicad Chris will go wild and okay I Have a quick squeeze at that and you have a tea towel. Don't get many tea towels. Highly underrated. the old tea towel.

I Have no idea what's on there. Let me read it backwards. some. what is it Oh Brighton if you I can't read backwards like that Brighton cool road to Sun Railways Sunshine sunshine in England in the old dot sorry couldn't help myself sixty minute Pullman Express From London through through trains from western north and Midlands oh cool, that's it.

that would it. that's an old ad from back in the day I would imagine Wow well that's really cool I can't remember where was it New York I think it was New York in England please correct me if I'm wrong. sure you will. There was a I don't know what score but it's the Railway Museum there or something and saw the Mallard that was cool.

that was way back she selling go was that anyway York was cool I like that. Nothing to frighten really but t-tell thank you very much I Need a tea towel here. It's just thinking that this morning actually don't get many handwritten notes but it's a Raspberry Pi thermocouple amplifier and record our hat. Um, and it did it with his son who did the Kicad layout.

Thank you very much Robin and hey Cochise that's a I like the oh geez, I like really like that. That's a nice probe that's a keeper. Where'd you get that from That just plugs into one of seven channels. y7 need eight? It's got to be a binary moldable o design.

with Kicad. When people have to advertise their their CAD package, that's like design without you. Design with Kicad is like yeah. okay anyway, um yeah, there's not much to it.

We've just got some generic thermocouple generic. Subconsciously saw that just some a thermocouple amplifiers. not sure which one goes in the Raspberry Pi look I won't hook it up to the Raspberry Pi and stuff like that. Suffice to say I'll link it in down below it's got cold Junction Compensation I've done a whole video on thermocouple and cold Junction Compensation I'll have to link it in typical Africa see a plus/minus start 2% That's fairly typical for these sorts of jobbies and and it can be used as a general micro volt reader as well.

It looks like - 6000 - plus a 40,000 range. Cool. It's got Pythons PI interface coding examples are all there. Yeah, look I won't hook it up and it'll take me some time to get all that working.

but I'm sure it works the treat so check it out over at Scientific Data Systems Co Uk if you're in their market for a multi-channel thermocouple amplifier and logger - always worth having. You know at least a thermocouple temperature sensor. Pro Preferably like a multi-channel or and/or a logger type system because you never know when you have to log temperature for doing, you know, just temperature testing your products over temperature. It's a very underrated thing which you should be doing for your projects and stuff like that just in a simple, cheapest thermal chamber which are showing you.

Just get one of those egg incubator things and stick this right up. Its clacker and you can log it as you want, monitor the performance of your products. Oh yeah, well we're having. thank you very much.

Robin linked in down below I'm sure that works a treat I mean just off the shelf, you know, thermocouple amplifiers and Bob's your uncle? I'm straight into the software. thank you very much. Board: I'm you know, like Born Yon with a J in there? Um, pilgrim from Sweden I know it's in here. well I don't know the exact model, but who classic? I'm sure we I'm sure we've had an F X 82 FX 82 was the calculator I don't know.

Speaking of before that I grew up with calculators. Yeah, the FX 82 was from memory the first one we were like legally allowed to have in schools. I think we're allowed to have it when we hit year six and when I hit year six? maybe I don't know the timeline might be off. but anyway, the FX 82 was was the bomber back then the two double-a batteries.

that was the bombing on that solar-powered rubbish nut. not know that. fourth row of keys rubbish I Found this laying in a pile of water sadface on a rainy day at the recycling station. I could not leave it there and took it home.

did not fit my use of there then I thought if you calculate a fetish and decide to send it to your open up and check this not soaked in water, put it back to UM tests of course it's gonna work. It's a Casio and he's got a link to what Say how up and say how to pronounce Vaughn you know I don't I know about ABBA Riyadh ever was a thing year in Australia yeah and when I first used it FX 82 when I first used a calculator I wondered what the heck is this Peter WA and Ardo P rubbish and like I had no idea what that was at the time because I didn't know about polar to rectangular rectangular to polar conversion and complex numbers which I may as somebody asked about fundamentals Friday I've been mending dual fundamentals Friday on complex numbers for a long time, so thumbs up the video if you want me to do a fundamentals Friday on complex numbers which aren't that complex I Love complex numbers. Anyway, cool. let's check it out and everyone knows the FX 82 one-minute tear down just as I remembered.

Know a double-sided rubbish and all the magic happens under the LCD Oh I Remember when they used to put the wattage on the back? ah, those were the days. 700 microwatts? No worries and of course it still works. It's a Casio Bob's your uncle that still use this as a daily driver and six digit mantissa two digit exponent. Know that eight digit rubbish.

And of course I had the engineering mode as the primary key here. So if you put like you know 0.3 Milly's something like that, then there we go. Like that engineering mode into that surround a micro. Thank you very much.

Point 3 Milli.