Hi Welcome to everyone's favorite segment Mailbag Please forgive my voice I'm still not that terrific, but open immediately from Fran Blanche Everyone knows Fred If you don't know, subscribe to Friend LinkedIn down below Anyway, everyone one already knows Fred Let's open it immediately. We have a note. oh it's not typewritten I'm yester hey Dave I Thought you would appreciate this as much as I Do wear it well. Thank you very much friend.

Steven Protected with cardboard, let's have a look. Oh, she sent me one. She sent me one. This is brilliant.

All right. You've got to see the video where Fred it's like an hour long. How she makes this hang on I've got to turn the lights off. Sorry, but this might be the best I can do.

This is the best blacklight torch I've got. Unfortunately my good one is missing in action in lab move so no, no good. Ah, how's that look at that. It's a disky display and if you don't know, the dis key is the the user interface to the Apollo guidance computer.

and Franz spent an awful amount of effort to do all the custom silk screens and everything to get this t-shirt manufactured. Highly recommend you watch the video of her process of making this. This is fantastic. sorry I can't do it better justice here, but that's that's great.

So yeah, apparently it's really difficult to manufacture shirts like this that actually luminescent like this. and friend actually did it all herself. All the chemicals, the whole works to actually get this thing done. Brilliant! Thanks Fran This one.

I Unfortunately opened. If you're going to send something into the mailbag, make sure it says mailbag on it because I get a ton of stuff like it's don't like I've ordered stuff or people or other manufacturers sent me stuff that's not mail bag things if it hasn't got mailbag on it. I'm just gonna open it. What have I forgotten that I've ordered this week and I rip it open and I that obviously looks like a mailbag thing, so this one was obviously a man a bag thing.

It's the voice command for oscilloscopes. Beautiful. Comes in a very nice little case. I Like it.

Anyway, that looks really cool. Let's see if we can come on now. Oscilloscope: I'm sorry Dave I can't do that. All right? What we got here is Ollie.

It's a voice control for oscilloscopes and and that's just a regular Raspberry Pi down there. So the Ollie is the board on top here and the open source software that goes along with it. and it basically contains as just it's got dual microphones there. Don't know why it has to be that newfangled stereo rubbish.

I Thought one microphone would have been fine anyway and get some added discrimination I guess and there's just one push button on it. but I don't know what that does yet and supposed to control your oscilloscope? This? it's on the Github and he's used a Jmw on the forum and it works currently with that Keysight MSO 1000 6000 series Rygel, MS and DSO series scopes excluding the new one I guess Anyway, you're supposed to just be able to plug it in and then go hey Snips, See, it just came on Hey Snips and it recognizes. Oh, don't know why it's flashing twice anyway, so it seems to be working so far and you just go hey Snips Single and put your oscilloscope in single shot capture mode. That's the idea behind this and it's got a whole bunch of different commands.

run, stop, single, all that sort of stuff so you know. hide external trigger show Digital zero, Zoom in, Zoom out, set time base to 100 nanoseconds I Wonder if it's going to recognize my Aussie accent? She'll be right mate. No worries. Of course the whole idea behind voice probing your oscilloscope is if your probing your bored, imagine there's a board there and you're trying to dick around or well, you know you got your tongue at the right angle.

You're probing the pin like this and you've got your one hand over here operating your silly scope and it's real pain in the butt. Wouldn't be good if you could Just go hey Snips Single and it's set to single shot capture mode. That'll be pretty cool. Well let's try it out.

There's the complete board for those playing along at home. Can't see what that micro is down in there, so it's just hard to read these chips on this stupid camcorder. LCD Anyway, yeah, it's that's all you need. Hey Snips, he recognizes me so far.

anyway. I Believe that's correct, then it just uses the Usb on the Raspberry Pi and that just connects to your USB on your scope. So you don't need any of that newfangled Ethernet rubbish up. you can just hook it in almost all scopes these days have.

well, at least these ones do have the USB device option and you plug it straight in and it's supposed to read if it can't detect. and then you plug in your scope and if it has a detective, the scope which it recognizes three greens briefly. There you go and it should be good to go. Let's try it.

So I've got my waveform here. Obviously when going to single-shot capture mode is just some serial data, so let's give that a burl. Whoa. Hang on.

I think I didn't say hey Snips and it was. It had popped up with the command there. So I assume it just does all those three lights if it didn't recognize a command. Anyway, let's go try and put it into single-shot mode.

Hey Snips single. Yep, there you go. Bingo. Single shot capture mode, but that wasn't very quick.

Let's try that again. Hey Snips Single! That took a good two and a half seconds or something like that to register and well, that's cute. It works. but yeah, I don't know.

Let's put it back into run mode. Hey Snips, Run. That's pretty good. Recognized my Aussie accent.

It works, but there's a bit of a delay there. and when you're trying to single-shot capture stuff, well, that could be annoying. Hey Snips, What's the frequency on Channel 1? Hey Look at that frequency Channel What? Look? The curse has popped up. Beautiful.

Didn't call up the hardware frequency counter, but that's terrific. That worked. It was a fairly complex sentence that had to recognize this: Aussie accent for Hey Snips show. Check there it.

Hey Snips Show Blair And it showed up the malfunction I Love it. Yeah, let's try that again one more time for the dummies. Hey Snips show. Channel 2 Yay! Channel 2 Brilliant.

So it works. Hey Snips, Zoom in. Hey change the time-base Hey Snips, Zoom out. Cool.

Hey Snips, make channel one smaller. Yay! it's under my command. Hey Snips, What's the duty cycle for Channel 1 Judy Cycle Brilliant. Hey Snips clear or measurements? Oh look at that.

Beautiful. We don't. Winner chicken dinner I'm I'm surprised out of the box that it actually recognizes my Aussie voice. Seems to do a decent job of it, so that's pretty cool.

Um, well done. So I I'm gonna link in this down below and of course you can build it yourself. It's all open source, so there you go. I've got a Raspberry Pi lying around.

You might be able to buy a blank board or just buy the board on its own. I'm not sure what the deal is there, but that's pretty groovy. I'm kind of impressed by that. I wouldn't use it in practice unless I had a real specific need for it.

really. But yeah, that's it's. pretty cool. It's one of those things.

If you need it, you probably really need it. And a few of the manufacturers keysight isn't one of them I think but a few of the manufacturers do actually sell voice command modules for their scopes, So yeah, it's a thing. So anyway, that's the Ollie. Oh, that is brilliant of it.

Definitely worth a given a go. Anyway, it's like it's a good curiosity and you can. actually it's pretty much self-contained Of course, you can pair it like I am pairing it from the scope and then just plug it into the back of the scope. In fact, if you're well, really keen, couldn't you pair it? I Think you could pry? You could probably steal this and then like have it redesigned somewhat so that I oh, why couldn't it power steal the power from the USB port that it's plugged into? That'd be kind of cool, wouldn't it? Anyway, it doesn't draw too much power that can't be powered from the scope.

Normally, a raspberry top pie takes a fair bit of power, but in this particular case, um, my Keysight 1000 X-series is driving that just fine. So that's pretty groovy. And it's based on the Snips platform, which is a voice recognition system. That's probably why it's so good.

and say polish because I think it's probably been around for quite some time. And yeah, it had a lot of spilling spit and polish done to it and can recognize an Aussie accent. So beauty. Hey, Snips, make channel one bigger mate Query: Unterminated for a campaign to start in May Whoops! it's the middle of June Thank you very much Loser: LLC Winning name Loser is actually loser LLC Okay, no worries, is that the reverse psychology thing? See what we've got? We have a note.

we have a board. some sort of interface board and it's another. They board with a round hole in it. hi Dave We are a group of electronics enthusiasts are based in Ames IA where's IA I don't know I I We invented an open hardware tool wondering whether you can help us spread the word.

Well, it's in the mailbag video. Well, it's most popular segment. Okay I think I'm getting what this is. Art: a few bent pins.

Yeah, if you're gonna whack something with pins, make sure it goes in foam and then you tape it on the foam and then put this idea. you can't just whack long pin things inside a box and expect them to survive. Postage trap for young players. So for us to send in the red shield? crowdfunded? There you go.

You can read that for yourself. Crowd Supply: Calm slash loser slash bread shield. Love it. And as the name implies, it's a shield for an Arduino Uno we type thing.

It only says only for animal. Now is that an asterisk? I don't Well, anyway, it plugs into various Arduino Uno II things and it just allows you to connect to the breadboard so it breaks out your voltage. So three point three so you know you'd wire that over directly to your power strip or the I/o and the analog and ground and everything else if you've got your you arts and whatnot. and I'm not sure what that connected down.

Oh okay, oh, that's okay, right, that's that. Don't know that doesn't extend at all. So yeah. anyway, it comes in two versions.

One's got a big circle in it. um, and I guess you need if you need access to stuff internal to the Arduino so it's not much more to say about that. I Probably would have like, maybe had the option for a poly switch or something on there. just in case you know, you're goofing around on your breadboard and you shorted out you don't want your and we know II - were short out so maybe that would have been handy.

But apart from that, it's it. does the business. That's it. That's all it does and that's fine.

White's a smidgen off for just a regular breadboard like that. But no worries, check it out. No hang on. This is version 2 and this one is version 3.

So I think they've changed it. so they changed it from 750 mils out to eight hundred mils. have added the circle in the middle and various things. so I'm not sure what the.

anyway. it is open source hardware. You can throw the board on your next order if you want one or whatnot. So LinkedIn down below, do not drop.

Okay, you got it. Is it clear enough? fragile? Oh Smack it straight on the end. It's guaranteed. So thank you very much.

Lee Zell Singh I think it's a silent I Yes, what is it? Engineering samples? Uh-huh Okay, if you want to send stuff to avoid customs engineering samples, the ticket. That's the ticket laddie. All the old favorite machine parts padded, lots of staff. Project files.

we have the project files that looks are STS to Engineering Electronics Looks like a very nice little notebook. black thank you very much St. Engineering Electronics, Mobility Rail Mobility stuff. Nice little notebook I like notebooks, pen has a thing Oh What does that do on the end? not sure.

at the end of that penis looks like is that a lid? kids, there's light up I Don't understand what's in the end of that penny. I'll figure it out Wow Lots of tight. You're doing this deliberately aren't you? Just to piss me off? Gotta work for it is in you got a PCB say PCB with some relays on it. Spoiler alert: it's a it's a programmable timer switch with a big-ass through-hole micro on it I think I've seen this I think they posted it on Twitter or something that rings a bell uh hi Dave I Said use bare board over a year ago and this is the completed unit.

Soldering is ugly, but it works. There you go. it's the timer. so I've had a look at that before thank you very much.

Lee So this is Lee's programmable timer switch which we have seen before so I won't go through it again but this is the built up version and once again I Still don't know why it like go for the dip version when almost everything else on here puff and the crystal here even the I know the yes switches the through-hole bit brightness. LCD Trimmer up here your regulator up here. You know it's a kind of a weird combination of through-hole and surface mount. If you're gonna go surface mount, you might as well go all the way with LBJ I think Anyway, it's pair it up.

Kind of annoying that you can only pair it from nine to 12 volts DC can pair it from 5 volts USB I Want to put a Usb on there and just bypass the rig and just power it directly. So yeah, hmm alright let's see if we can operate this thing and haven't read the instructions or anything. We've got a real time clock calibration. I'm not sure why you'd bother.

You know you're gonna get you. It fit well. Backlight just turned off. What? Hello! Why wouldn't you gets plug pack powered? Why wouldn't you leave the backlight on all the time? Is it? There's that a software thing? What's going on Menu: Yep, it's a software thing.

Yeah I wouldn't have bothered. That seems silly. Menu information I I would have put one of those joystick E things on here probably Mode Mode: Manual repeatable I have no idea what that is. Specific Timer: Let's go to timer mode shall we choose? Ok Setting: Okay, thank you.

Oh do I just go back I wouldn't have said in ok, let's go back. that's it. Ah yeah. Ok, what do we do now? Oh not what I thought it said no rift plus what I did seriously I thought that said reset and I thought that was some sort of reset button dope, right? So on, what do I? what do I do Anyway, we've got a heartbeat lit up here and seeing a heartbeat lid.

It's really old-school on/off I'm not here in the relay. Go! I Guess we have to go into manual mode. Time Date: Ok Oh didn't go into that before master reset so we can choose to have the relays coming on a specific time date. That's probably where you need a keypad off.

sorry I couldn't see that mode. she's okay. Manual buzzer sounds a bit sick. Alright, yeah, yeah, there we go.

There we go. Yep. on/off Yep. so we're in manual mode.

Totally exciting and then you can program it I Won't go through, but yeah, you get the idea. So the the problem I have with this is that it's I'm sure I would have mentioned last time is the size, the form factor of this. Sure, if you want to make it like big for a particular reason, then that's fine. It would have had the the programming header over here somewhere.

wouldn't have had it sticking over the edge like this would. I had it like vertical right near the micro because you got to route the traces all the way over there. so I'm not sure why bother doing that. as I said, you just go all SMD If you use parts at your head to hand in your junk bin, you know that's fine.

No worries. I would have used like a USB as I said five volt directing power and that tight that backlight. Now you got to just leave it on all the time. Crazy.

It did mention in the letter that should have used a green now since blue Moon because characters can't be seen when the backlight is turned off. No, it's not necessarily a factor of the blue, it's a factor of that. it's you didn't get a transflective LCD Which means that without the backlight you can get it's in both transmissive. You can get the backlight coming through and it's reflective as well.

It's a combination of both. So yeah, it's just the particular are type of. LCD You can order them in different configurations and apart from that I don't know I Would have had more more. more.

like can the software actually read the state of the relay I would have liked if it's on. yeah, the leads are coming on. maybe have it on the LCD but out of that, that's neither here nor there. Apart from that, yeah, I would have made it like credit card size or something like that to just because you could.

although you know you have a bigger, a rather large sixteen by two LCD like this and then buttons and things like that I Guess you know. Anyway, cool, thank you very much. Lee I Can't remember if this is open-source hardware or not. There's no Lee doesn't give a website or anything, so there you go.

I guess I Can't point you to where it's at. Oh and also you probably could have used their more expensive type, but you could also use a latching relay type and then you could actually have the thing battery-powered It wouldn't take much power at all because once it then it doesn't have to retain the relay. It can just latch it on on or off in various states and stuff like that. So all you can have solar state relays and things like that for some sort of you know battery power version.

then you getting into a whole product design and stuff like that and well you know this is just a board that I guess Lee needed to control some stuff and it's added flexibility to the menu for time, date, configuration and various Sir: I don't know how yet. Like is there a programming mode we can program in sequences and stuff like that I wasn't wasn't sure if that was a thing repeatable Specific my like I would have liked like you can come on and off at a certain time but it looks of it but there's that doesn't seem to be any like sequence programming mode where at a certain time then you can run a sequence of commands for example like okay tomorrow at 8 a.m. I want these this relay to turn on for five minutes and then turn off and then turn on again. it's it's kind of like the you know the the old sprinkler time or the water sprinkle a timer for your tap and you know stuff like that um it might be I'll do it not sure.

thank you person I know and once again didn't have mailbag on it so I did over it and I instantly went well. there you go. Yep that looks like mail back mark thank you very much. Mark for Cindy means some sort of old HP board which has no idea what it is.

Oh you know the Motorola fanboys go wild. We got that big ceramic jaw be very nice so that's a it's a HP IB It's a bit and part of their. it's probably part of their like life sciences range or something like that and it just plugs into like a a euro rack kind of thing so that just looks like that. Went: it's a main processor but does it only do I mean it's got RS 42 interface PIB and then it's basically is it just the interface controller? If so, that's 68,000 is a bit of a beast just for a controller, so don't know what sort of processing that does.

Aha HP 37 2, 8, 8 a For those playing along at home, it's got 75 ohm input B and C so obviously part of the same rack, it wouldn't just be these two. You could have probably cascade like dozens of these things 140 megabits per second. so it's some sort of serial interface Joby It's take closer look so Mark is sending these classic HP boards and please if you've got details I'm going to have to google it and add information here, but as you can see, this one is 140 megabits per second 75 ohm input, then you standard 50 ohm. So that's interesting.

The HP 37 288 I As I said, my first guess would be one of those life sciences doodads or something like that. and as you can see it's all LS or TTL goodness. And in the class I know got some F got some F-series gotta have some F yes, F and LS and then some Motorola Jobbies down here. This is interesting how the how the board changes when you've got all these Motorola Jobbies down here.

They need to obviously be doing the serial decoding or what and the high-speed serial decoding. I'm gonna have to look out the datasheet on there but look healthy the they've got a crosshatch grid over that on the is that they're sort of attempt at sort of like adding a top flood feel shield to that but they went oh we don't a walk the board and you know having all that copper on there. Although they did do a couple copper flood feel there they probably didn't want it over the whole thing and they just went oh let's you know, not put copper over the whole thing. so push cross hatch.

You know not many people do the old cross hatch anymore. It used to be very popular back in the day and most cake packages can probably still do a cross hatch flood fill for you. but you know it was really only in the old days of PCB manufacture in the head, the processes yet in the laminates and they'd warp and they'd cause all sorts of problems in the sodam acid, peel and crinkle and you know it was really horrible. You really don't have to worry too much about that today.

Although, if you do like, have one big cop. if you have a really large board and have one big copper on one side and then nothing on the other side, you can get a little bit how you're doing. but yet still. that's that's interesting to see.

They didn't repeat that on the bottom. Oh, I've got a genuine budge look at that. But as is classic style, as I've mentioned many times, when you've got old-school digital layouts like this, you put all the chips in the one direction like this: This is how you lay it out. you notice Pinones all in the same orientation.

They're all faced. Unless you had a real specific requirement to flip a chip around, you wouldn't That would be sacrilege. So they're all pointing in the right direction and then on the top, you'll notice that the tracers are going across like this. Although this is a multi-layer board, you can see the internal green ground plane inside there and this one actually.

interestingly look, yeah, the ground plane stops there in the inner layer. This one doesn't maybe doesn't have that, so that's interesting. It's got the crosshatch on the top. Fascinating.

Hmm, it's gonna say were they trying to like a sandwich it in between the traces, but there's no ground plane on the bottom anyway. On the bottom, they all go in the vertical direction and that's how you would route your like your bullets back in the old days with all your digital logic. before our now it's all in a micro bloody FPGA these days. But anyway, yeah, classic old-school 140 make bits line monitor you know.

Wasn't able to find any direct info on it but I was able to find a list and here it is of various cards in there. you know 73 xxx type range and it's looks like it's from some sort of communications. you know, serial comms and lies or something like that and that makes sense. There are like the more modern versions I could find a much smaller and they got like these half-height and cards that you plug in but these full-length ones.

obviously it's an older type things. So yeah. I don't think it's the life scientist thing anymore. I think it's a specialized bit of serial interface test kit.

If you do have any further information, please let us know. Anyway, all the stuff on here we're talking that these are right. Mikkel - you know ECL - are TTL converters. so they're basically converting the data from all this ECL section over here to your TTL section up here and then all your other ones.

These are just ECL or mikkel equivalent, you know? d f-- I think one's a D flip-flop it varies, just digital logic equivalent is seven for series TTL but ECL faster and there's the input section down there. Got some sort of hybrid action happening down there and these are fascinating. Check These are these are delay lines. Well and then the then you choose your tap.

you manually choose you tap on top and then that just gets shorted over to the bar on the bottom, which goes down so that wouldn't be a particularly long delay at all. We're only talking like you know, handfuls of nanoseconds there. But yeah, obviously that's a programmable delay lines, so that's really interesting why you'd need those. So is it some sort of like calibration thing? You wouldn't think so because once you've done your PCB layout, everything's pretty much you know, characterized down to half a pouf tenth of a nanosecond.

So really I don't know. Um, let us know. Maybe as some sort of it. Anyone got any info why you would have you know, none o seconds, tens of nanoseconds programmable delay on something like this? That's you know, like it's not really user and the user could adjust it.

but I think like it's more like factory programmed or something like that. Perhaps interesting. Anyway, it cup little test sockets. There are actually a little little itty-bitty Coax is down in there.

so that's just a serial line receiver for a hundred and forty Meg bits which would have been screaming back in the day. Now there's Gigabit rubbish. Then you've got this processor / GPIB board. as I said I don't know whether or not it's just doing the GPIB process in pretty granny processor for that 68000 job.

Anyway, we're talking about 1988 Vintage Hero 83 Yeah, 87 88. Yep, so late eighties vintage here and you know a few F-series interface stuff with the bus over here. Not much else doing but it does have have a whole bunch of interface lights and does some remote Rs-422 stuff which buggers off. and there's your roms so if anyone has any info on that, please let us know in the comments down below.

No budgets, perfect layout, thank you very much Joseph Panini from a burn game in California I want my viewers in California it's and I think it's much smaller than what's in the what it looks like here so it's a mass quiz. All right I know I think I know what this is I was clued up. It is a good plastic case. that's one way to do it.

Thank you very much. Oh there we go. the shrink-wrap for our protection. We have SMT adapters.

Cool! Let's check them out. So Joe's made these cool little SMD to banana plug adapters and there I actually haven't I Don't think I've seen these particular sockets before. Let's have a look. This is four oh four, oh two parts and it's exactly what you think.

It's as if sockets a zero insertion force socket. You can see the tiny pins in there and it converts Euro for O2, we've got Oh Six. We've got a 805, we've got 200 a tier, fives, different widths and we've got Oh Six Oh three as well. and they goes inside there and you put it down so you gotta.

Obviously you could get it with your finger like oh for ITU's you could sort of get it maybe off the bench and put it in there. but it you having a hard time so you gotta put it in there with tweezers. But once it's in there beauty, you just plug that into your meter and you're a multimeter, your LCR meter or whatever. your bridge.

Whatever. you're using old-school bridge and you can measure them very nicely. I Like that. All right.

it was only about 0.1 pop up. It's all. It's almost practically not measurable. I'm gonna see if I can get an Oh Six, Oh three and whack it in here.

I'm gonna see if I can do it the old-fashioned way. Pick it up, put it on the finger and whack it in there. Yep, Bob's your uncle, have a look at that down there and it's working in yours if socket and beautiful like a ball one. How easy is it to get out? Can you actually get it out? No, you got to think you got to tip it out.

Vantage of these is that they cheat relatively simple and plug into your existing the LCR meter or multimeter. But the downsides are they're fiddly and you've got to get the individual component in there. No good for mass testing or for testing them in reels for those sorts of things. I Much prefer one of these puppies.

you're that beautiful and you can like yeah, you can just like test things in both I Mean these things aren't cheap, but you can't actually get tweezer adapters like this for your LCR meter. You can probably buy them on eBay or Aliexpress haven't actually checked. but yeah, they're better. You can actually test these in in the tape and stuff like that when you like selecting components and things like that, so you know.

But the real expensive solution? much cheaper and simpler solution. so check it out at a pre log com. Thank you very much hype. I'm hyped from Hong Kong sir.

What's Hong Kong SAR I Feel like I should know that? is that like in some sort of economic zone thing or something. Anyway, let's have a look what's inside here. but thank you very much, it's I Think it came like this sir, it might have I don't know, this is the original Hong Kong shipping label. Anyway, let's have a squiz.

I don't think you didn't have somebody's name. it just said from height. Okay, bye I Got this Mku thing in new in box condition. Unfortunately, it didn't work when plugged in.

yours. Truly a quiet subscriber. Thank you to all my quiet subscribers who watch and they don't They never comment, they never seen, they never write. um oh yeah, this this looks mint-in-box This looks Soviet-era now.

this new fangled plays nice rubbish. Let's have a look. Ah oh look at that beautiful confuse. er oh, that's fantastic.

Ah, gold. Terrific. Oh look at that. None of this four-banger rubbish.

Full scientific job II Have no idea what that says and it's an MK you. For one, it was mint-in-box and did it work Oh Boohoo! But look at the green vacuum fluorescent I think you can see it? thank you in fluorescent display in there. It's got to have some classic eighties Soviet era technology in it. Love it.

Ah Flathead. Now that Philips rubbish. It's just the one screw something, another screwing the tops. That wax.

Is that like a wax seal in there could be? Let me try and dig that out. Just like a solar power video. More sludge on my tip. Nothing worse is sludge on your tip? Yeah.

Unbelievable. Anyway, yep, let's pop this baby open. Ah, that spectacular. None of that.

So damask rubbish. Look at the staggered Punjabi I love those because they couldn't get the fine pitch back in the day so they had to stagger him. aa thing of beauty is a joy forever. Anyway, yeah, 91, 1991 or 88 and 91.

it's got a mix yet. the main chip 91. Unbelievable. Wow Hands up Russian viewers if you had one of these in No 91.

Geez. I'm still selling this in the 90s I Believe Luther Still still played on those for each column Wow They went to town, somebody had fun power supplies a Bobby Dazzler look at that. Wow, that's terrific Carbon Trimmer down there to set the vote. It's just gotta follow at ready down there and that's terrific little fuse down on the board.

Well Gilda The Lily Don't like the look of the display though. it's all black around there. and look at that. look at that silver in on there.

Is it? like? it's almost as if it's some sort of like silver migration or something that's happened inside there. I Don't know my vacuum fluorescent construction technology as such, but yeah, it looks like it's sort of like migrated half way down there and then sort of. yeah, that doesn't look. It doesn't look factory original to me.

I Think something's something's gone horribly wrong there? Hmm, let the vacuum out. Got a hand it to the layout person. There's no budges on there. Yeah, it display looks like one sick puppy.

I Don't think there's much point troubleshooting that I think that's that's Gonski But if you do know for sure, let us know in the comments. But yeah, pretty simplistic designs. basically single-chip by calculator. The rest is just like interface stuff for the display.

Really not much else doing there. It's all I wonder if they they develop their own or did they like? you know, copy earlier till the US or Japanese calculator technology or whatever. If you do know, please let us know in the comments. As always and I Can't believe that was made in 1991.

No. Wow. I mean that was the year that the Soviet Union ceased being a union and he became Russia I mean this is post David Hasselhoff Berlin War. Unbelievable.

There's a genuine manual for those playing along at home. Absolutely fantastic. Ah, beautiful. Ah, there's that did.

Yep, there's all the specs. Fantastic. And we do have a schematic somewhere in here. Look at that.

you always get a schematic beautiful couple of flip-flop ease up there. That's what those other chips on there would be and our oscillator and that's that's it. Bob's your uncle. that's good because something else is there another RC down there doing some sort of counting delay things.

Sure, What the deal is there? Hmm. have to sit down. think about it. leave it in the comments Anyway, thanks for everyone who sent something into today's mailbag.

sorry if yours are still sitting there, but you know I I Just choose them randomly. Really? Anyway, Hopefully. Oh, do another one soon. No.

I don't have enough stuff for every week and you know it's just not a thing. It's not a weekly thing anymore. But anyway, if you like my old baked Monday Please give it a big thumbs up cuz I'll continue to do it regardless of you give it a thumbs up give it a thumbs up. anyway I need the engagement to feeding the YouTube beast algorithm So anyway, as always discussed down below, catch you next time.