EEVblog 1403 - Mailbag

hi welcome to everyone's favorite segment mailbag let's get into it unfortunately i have opened this one so meh whatever anyway you may know who this is from if you've watched uh if you follow lewis rosman he's actually interviewed the person who sent this eric lundgren if i'm pronouncing that correctly thank you very much from bigbattery.com or how you may know him formally from i'm not sure what company it was but anyway um there was a big kerfuffle about uh him going to jail there's actually a documentary on it i'll link it in down below um about him actually going to jail at microsoft um for like pirate in uh microsoft cds and like recycling computers and including a microsoft cd that you could download from their website or was it yeah anyway i don't know the details but anyway interesting story but uh yeah ever since he's got out he's formed bigbattery.com and they actually uh recycle like all automotive batteries and all other like any lithium ion batteries they can get in the industry they actually recycle these and they're absolutely massive now they've got their own factories where they recycle these batteries retest them repurpose them and use them for all sorts of stuff they've actually got contracts with like half of the automotive manufacturers out there to recycle all ev car battery packs and if you don't know i've got a hyundai ioniq electric car gonna do a follow-up video on that and anyway it's actually been uh recalled apparently they're gonna recall the australian ones too because i don't know eight of them caught on fire or something so they're recalling the whole blink a lot and they're going to replace the battery packs in them and uh big battery in the us they're actually getting all the ones that are being recalled in the us they're actually going to repurpose the batteries in those hyundai ionics to be used in the charging stations for the new um amazon electric truck fleet or something anyway very cool so these batteries aren't going to waste and anyway totally into eric's is a totally interesting story so i'll link in the doco down below check it out what we've got here ta-da look at this these are actually tesla model 3 batteries ah fantastic i'm not actually going to do a tear down of one of these bad boys in the mailbag but if you want to see me like unroll the jelly roll on one of these things then i can do that on a on the eevblog2 channel but yeah this is a tesla model 321 a battery and i've got a whole bunch of them i'm probably going to have to get uh one of those uh you know tab welding machines so i can actually connect to these and uh do something interesting with them so i've got a whole bunch of them anyway they manufacture a uh a bunch of stuff using uh all these recycled ev and other uh batteries and this is one of their things which they made for the indian market apparently and uh yeah it's a little portable 300 watt portable battery charging station i've got two of them so let's tear one down so here it is here it's in a uh extruded aluminium case it's got that kind of pinky not really gold but pinky uh the color don't like it meh anyway um 180 watt hour capacity uh 300 watts uh continuous output power 450 watts peak so you're not going to be go charging your electric car with this thing not that 181 hours wouldn't get you very far by the way my hyundai ioniq gets anywhere from 10 to 14 kilowatt hours per 100 uh kilometers that's kilowatt hours so yeah anyway this is not going to be a full review of this thing let's do a tear down it's got a little lead display on the front showing you the uh capacity left 53 64. um yeah i've i charged this up fully when i've got it but it's been sitting here for like a month or something so as is common with these packs you will get some self-discharge it's got a couple of 2.4 amp usb jobbies um this is the uh 240 like the more universal um 240 volt uh well 220 volt uh model we've got our ac in also we've got our solar charging as well but it seems to only support 42 to 60 volts which is a bit disappointing this is your uh regular eight millimeter uh plug which is common uh to recharge uh like i've got a um 400 watt hour uh battery pack it's got the same connector and i've also got like 100 watt fold out solar panel for it uh but it's like only like 20 volts it's not 42 to 60 so i that's probably a bit of a fail don't know what's going on there anyway small fan um obviously uh something's heat synced on the side here so yep yep more power devices let's open it up i was just about to say that this is going to be a problem if we have to like take these off and slide apart the whole thing but it looks like she might just crack open like this as that battery's on the you have to be very careful of course i should have probably discharged this before i took it apart but yeah battery oh yeah let me get the back back screws off first but it'll just lift off all right now we should just be able to lift this off and nice that's how you should do it beautiful and of course what we want to see is battery management uh protection all that sort of business and it looks like yep i can see lots of battery management on there first thing i noticed is check that out um there's a connector on there and the cables have been cut off why is that a uh is that a balance thing like to balance out this string not sure so it looks like that's all mounted on a big uh custom cell frame and the individual cells in are in there like that there's uh two rows of well you know however many fit in there um these are 18 650s i would be guessing yes they must be because the tesla ones uh they look a little bit too long because they're your um 21 uh 70s or 21 700s but you can take the zero off the end 2170 means 21 millimeters in diameter by 70 millimeters in length and likewise 18 650 stands for 18 millimeters wide by 65 millimeters long so yeah they're 18650 so not sure where they're sourcing those from but all the batteries they use apparently are uh you know recycled from somewhere and they individually test each like and uh life cycle each cell and you know make sure they're all uh good before they reuse them into packs like this and then we've got our main board uh down here i assume it's uh i think in men might have mentioned that it's custom designed uh by them i think uh don't uh quote beyond that but anyway um yeah that's a bit how you're doing there's our 240 volts uh mains input no insulation on that uh at all and this is double insulated in quote marks so there's no uh mains earth on this thing and i don't know is there adequate clearance between the bottom of the pins on the connector down there and that bottom of the chassis that looks a bit tight anyway what we've got clearly this is our main side uh switcher here and there's our main switching transformer bridge rectifier down in there a cap is uh yeah it's a nothing burger it's a it's a hin cos i never heard of it anyway um yeah there's our low esr output jobbie so there's our secondary side there we've got a isolation slot cut out there but yeah like there's nothing there like there's no common mode chokes or any other filtering on the primary side here so i there's just one so the ptc and they look like our primary side uh switches there then our secondary power supply this is going over to the fan over here it's an isolation slot right down the middle there and then they've got the wire going over so this is the voltage going over here to power all of your uh charging circuitry over here so um yeah that's that's goes off to our battery pack uh there is a there is a fuse there's like a cartridge fuse down there that looks like it's a that looks like an automotive cartridge fuse or whatever they're called um is that soldered in it's interesting yeah i think that's soldered down wow to220 flapping around in the breeze there it's a bit how you doing so yeah this section is going to combine our you know chart you've got to charge the battery you've got to charge it from your uh 240 volt input or your uh solar input which comes on this side here so they'd just be diode or in that are they all there's a little current shunt in there oh yeah that could be your diode or in there um and then we've got our sine wave generation over here so this is our sine wave generation here's our driver tranny's uh heat sunk oh down there out well we've got other ones down here as well there you go they've got silver held in place with uh seal pads and ah grease as well um why do you need both really because the whole idea of the sill pads is that they take out all the uh imperfections in the surface of um well both surfaces the transistor and the uh case that you're trying to uh cool down you don't need the thermal paste to get in there so you just squish them down on the sill pad and bob's your uncle but anyway put down some thermal compound as well geez and the main uh on off switch that's just a soft switch over here so there you go that's why you know you're going to lose some uh battery over time because you've got a little bit of a standby power i'm not going to bother measuring or anything this is not a review performance this is just a tear down and then what's that oh there's our lead display down there so that'll be our little micro uh control in our led display i don't know any micro aficionados i don't know you can read that i can't see it from here and then that's probably our other controller up there for our mains generation and well that's about all she wrote there's not much else to say about it really but there's our mains yep there's our mains output so these are these four are our direct mains output switching which in which then of course goes directly out to our 240 volt out once again no heat shrinking on there not one stuff given well as it turns out i can't actually get this out because one of the screws is like um stripped down there like the head is actually stripped the phillips head the other ones were fine so i'm not sure what's doing there but um anyway i don't want to cut off the insulation here so i i well i guess no look couldn't be bothered it's just a mailbag it's not a comprehensive review um anyway it looks like all right like this board is designed for something else i suspect because these have got like lead outputs here so i think they're repurposing this from some other uh product they make but you know it's probably got all the requisite uh protections and stuff like that in it and you know cell balancing all your battery management uh stuff so yeah so i have actually uh tried this thing and it does work but once again uh not a full review so i'm not going to bother you know measuring uh waveforms under load and stuff like that i don't even know if it's a pure sine wave inverter doesn't say anyway um yeah just a mailbag if you do want me to test something specific i can do that on the second channel just let me know down below but yeah apparently this is a design for the indian market so you know it's not like they've spared no expense on this thing it is built down uh to a price but uh yeah i like the fact that they're repackaging these uh recycled batteries they're actually reusing them instead of tossing the damn things good stuff so anyway check out eric's website i'll link it in down below because they're like remanufacturing um like millions of these uh batteries like recycling millions of these ev uh packs from old cars and doing all sorts of things and um like absolutely like we went from nothing to like the biggest one i believe they're the biggest battery recycler in america or something like that like they're absolutely huge now unbelievable and they're stuff you can buy like massive like hundreds of kilowatt hour battery packs uh like for home storage we're using all recycled uh cells and stuff so ah brilliant i love seeing stuff being recycled absolutely fantastic ah these bloody self tappers these are horrible like half of them are bloody stripped now ugh our workbench of the week comes from fabian schwartzu if i'm pronouncing that correctly i'm sure i'm not uh it doesn't say what country but uh from the eu by looks of the email thank you very much and obviously this is a um rf uh you know test bench and sure enough are these down here are 5.8 gig horns here and we've got a directional coupler amplifier and whatnot um and of course given that his name um he's got roden schwartz gear doesn't he so unfortunately he's um spectrum analyzer only goes up to four gig and he's uh it's got a sig gen uh 300 kilohertz to 3.3 uh gig there you can actually get these these are quite older units you can get lots of these fairly cheaply on even relatively cheaply on ebay if you have a good hunt around so i just got some basic power supplies geez i remember those ones and those ones um yeah classic uh looks like we've got a bk precision electronic load up there what else we got we've got a and of course roden schwartz yet again um european oh we've got the little which is um hey meg i've got that that's a dual branding one roden schwartz hey meg joel brandon if they ditched they just go in for the i yeah because they kept the hey meg name for the lower end stuff i think anyway very cute scope we've got the original uh dual channel function gen there we've got some old philips stuff i love the old phil stuff we've got a old 10 meg function gen here and a pulse gin geez pulse gens they were uh pretty popular kits back in the day you know obscure bit of kit i built my own uh pulse generator kind of i think it only went up to a megahertz or something or five mega it wasn't much um wasn't this 50 megahertz job he geez i would have drooled over one of those as a kid unbelievable anyway oh we've got an fsp uh spectrum analyzer here um he said it only goes up to four gig but it says seven gig anyway uh sorry three gig he says in his email um but it's a seven gig on there so i'm not sure what the deal is it looks like he he only got one without the uh generator option if you are looking for these on ebay do try and get the tracking gen option because it's going to be much more versatile but he probably picked these up like really cheap second hand would be my guess and uh vector network analyzer vna 4gb jobby very nice so there you go um that's not hooked up to anything at the moment but that's a classic rf bench awesome no nothing else there i'd be sure yeah it's probably got more like component bins and all sorts of stuff off to the side see no soldering gear but this is just like a testing rf testing bench cool thank you very much fabian hi to all my viewers in the ukraine thank you very much oleg kutov if it's a silent k i think anyway from uh kyiv ki kiev ukraine i don't i don't know um thank you very much let's have a look no it's not a hub it's everyone's favorite segment mailbag few people take me to task for saying it's everyone's not my favorite segment why do you keep saying it take a guess all right what do we got pull pull okay paul that's it oh nothing exciting happened no explosions no nothing okay got some capped on tape holding it on i wonder if it's going to be new or secondhand don't know mailbag's like a box of chocolates you never know what you're going to get i see sma connectors sma connectors usually mean some form of rfe thing and based on the ground plane there i would say yeah controlled impedance that match length is it uh yes match length open source hardware oh okay it's a clock distribution thing for uh you know time reference like a one pulse per second clock distribution you know that you distribute it out to all your instruments it's a like a uh a lab reference you know you have your rubidium frequency standard your gps stand or whatever and this distributes your clocks to all your uh instruments in your lab cool let's check it out ah third sucker the save for o leg um anyway here you go uh one pulse per second propagation delay four nanoseconds ten megahertz uh clock propagation delay ten nanoseconds it's open source hardware and software apparently i missed something in a previous video oops sorry about that oleg anyway um check out his website and here is the open source hardware clock distribution amplifier really i'll call it anyway there you have it um just basically a 10 megahertz reference in it can be other frequencies but 10 megahertz is the standard used in uh test instruments and then um eight outputs here to drive eight instruments all across your lab so yeah if you've got one rubidium reference standard you don't need more than one unless you're like doing comparisons and stuff like that anyway uh you plug in your rubidium reference standard and then you can plug it into your scope and your spectrum analyzer and all your other gear fantastic of course not all gear has like an external 10 megahertz reference input so you've got to check if your scope or a spectrum analyzer has that capability any sort of medium to high level scope will or and analyzer will though so anyway uh one pulse per second control not sure what this job is here because do we have a schematic aha we have an overlay there you go uh power 7 to 12 volts and these are all the one pulse per second cmos outputs if you need that many i guess so it's input output uh i'm not sure what type of amplifier is used on there um unless we have a look at the schematic we won't go that far but there you go that's neat and as i said uh trace length matched here that's what the wiggle wiggle wiggle years in here are of course what you'd normally do in this sort of situation exactly what oleg's done here you know you'd start with just your straight one out here because this is going to be your longest path so you start with your longest path like that obviously it's a symmetrical uh design so this path length and that pass length here matches this path path path link path length matches and then you add the extra wiggle wiggle wiggle yeah in here to uh get to and of course you make them a little bit just a little bit us out on this symmetry there this one's sort of like oh it's not gonna matter a rat's ass it's just aesthetics so cool some labs will uh have use for a clock distribution amplifier like that you could whack it in a custom case or something like that that would be sweet link down below thanks darling got one from australia from lightning source i don't know from dandenong in uh dandenong south sorry i don't insult all the uh southern endangered on southernians i don't know is there a rivalry between north and south dandenong i don't know i'm not from melbourne anyway uh let's check it out it looks like it it's looked like a like a book kind of you know it usually is shipped like books in this kind of thing so let's it is it is we have a book we have a book oh practical hardware pen testing a guide to attacking embedded systems and protecting them ah cool okay is this a considering that comes from australia here is this a local author okay cool we'll have a quick skim through it um the dreaded pointer ah cool so a practical pen testing pin pen testing being penetration testing of course a guide to attacking embedded systems then protecting them against the most common hardware attacks sweet so for those who are into penetration testing by gene george's valley veil something like that um let's go looks like it's brand spanking about the author about the reviewers as well i'll be very brief on this so let's just look through the uh getting to know hardware and stuff small tools and equipment renting versus buying tools excellent cpu blocks storage block identifying components oda furby opening they do the furby do they terrific yc not arduino introduction to c the stride methodology planning your attack and then there are all the requisite buses i squared c spi uarts extracting and manipulating onboard storage wi-fi bluetooth ble software-defined radio attacks accidents in the debug interfaces usually you can find like a debug port on that system like a jtag debug port or something like that dynamic reverse engineering ah i get a mention and the ev blog forum gets to mention you will find a curated list of dmms with their characteristics and comparisons on the eev blog forum yes you will it's actually an incredible spreadsheet sorry i forget who actually uh compiled it but it's kept up to date it's got like hundreds of multimeters it's absolutely incredible i also warmly encourage you to watch the videos from any of your blog dave jones style isn't for everyone you think but personally i like it a lot and his videos are always very educative educative is that a word i guess it is so i assume that the author is actually um because he watches my videos and he's like told the publisher hey ship one to the eev log so i think that's how it's turned up and then uh yeah i guess they shipped another one of theirs opening the furby so it looks like they're going to use the furby as an example epoxy blobs and things traces of the spi stuff this is all good stuff balancing your scenarios type of actor kid with an arduino and a soldering iron amateur a security researcher criminal group state actor or electronics company love it attacking the hardware so i don't know if they have anything on like uh side channel attacks like you know power supply attacks and stuff like that i mean that might be too specific for a book like this this is seems to be like going for you know like sort of accessible kind of well power supply is accessible um but yeah it's uh it's a bit more advanced logic voltage transitions open bench logic sniffer and you've got your bluetooth and wi-fi's and whatnot sniffing raw bluetooth oh they get into uh transmitters as well nice and then there's a whole section on attacking the software and things like this this uh it looks pretty comprehensive you probably should have this on your uh bookshelf if you want to do any sort of uh reverse you know not necessarily like penetration uh testing but just uh reverse engineering so yeah i couldn't uh readily see anything on like a more advanced stuff like you know power line injection uh attacks and stuff like that but uh this looks like a pretty good primer well worth checking out i'll link it down below well on a roll might as well have another book from my brad surlys uh from flemington new jersey so i don't want new jersey viewers let's have a squares good to see people still publish good old-fashioned dead tree books fantastic oh that's a hard cover or marvelous magnetic machines building models electric motors from scrap ah that's pretty neat just got to be careful there's no there's no over unity woo-woo in here is there i don't think so hang on no i think it smells woo-woo free it's okay so yeah i think this is just um shaft and oh okay wow for all you at motor aficionados this could be sweet you're standing in front of an old card table in a driveway at a garage sale on that table is one quarter aluminium saucepan a votive candle holder pieces of some office machinery and a wooden awards plaque what do you see there if you did not answer a six cylinder radial electromagnetic attraction motor then you need this book this is great or author of the voice of the crystal and instruments of application returns this time to explore the principles behind the operation and construction of five simple yet impressive model electric motors you learn where to find and hunt for materials and where to salvage suitable bearings excellent so the whole look i mean this is like in this is what they're talking about uh they're talking about yeah that's obviously a saucepan look at that and that's the awards plug they were talking about and like building a motor from this it's like work of art really and it takes you in 150 pages through uh designing like seven different types of machines so let's let's have a quick uh flick through oh okay we got our yeah got some electronics uh stuff and we've got a whole bunch of cad drawings or some nicer close-up color photos beautiful fantastic um like the motor aficionados out there are probably wetting themselves because this is just this is gorgeous i don't know what the christmas motor is but you can get the book you can read all about it so they're you know they're not anything practical i guess but they're more like building these things just from scrap for like work of art hobby uh kind of stuff the texas motor yeah it's like a i guess they call it the texas motor because it looks like in a uh drilling like an oil uh you know an old texas oil rig kind of thing i guess that's what i get with the big armature up the top and the you know big piston going down or whatever so yeah vectors and vector math wow well that's certainly very interesting and novel linkedin down below oh hardcover beautiful i think this might be the first time we've had a second sucker the server on the same mailbag it's from lightning sauce here has it got a bloody pull tab on it i'm sure you'd have a pull tab on that ah bugger it aussie pull tab there you go um no no it's another one so they're happy they're having two sucks of the sav this publishing company yes uh pact learn robotics programming there you go for you a second edition on that first edition rubbish um so yeah learn learn robotics programming for all you robotic aficionados there you go creating pen and tilt code finding your pi on the network so it looks like we're using a raspberry pi building a scanning sonar well it's all happening uh open cv of course uh because opencv is like the thing for vision uh stuff on robots voice communication with a robot using mycroft no idea another quick quiz so packet publishing having another sucker the sav here with that robotics programming second edition build and control ai enabled autonomous robots using the raspberry pi and python oh packet is searching for authors there you go i do actually have an open uh invitation with a publishing company if i ever want to write a book on engineering or anything else but yeah writing a book is a metric crap ton of effort and in the end i'm actually because i've got such a large audience i'd be better at self-publishing and promoting it myself anyway so but for those who don't have a large audience like mine then yeah a uh publishing company like this will uh will get your name out there preparing a headless raspberry pi for a robot backing up code with git oh yeah all that newfangled get stuff rgb strips drive and turn python it seems all you know elementary and then they work their way up to advanced stuff like opencv and things like that i don't actually know how easy it is to implement open cv but i've heard that you know it's it's not too hard at all because a lot of people have worked on that and uh they've taken all the hard work out of it who's the book for someone with little programming experience or someone with more experience looking to apply their skills in the hardware project you do not need to be an expert level programmer what does robot mean so yeah it starts off pretty basic controllers pwm stuff planning the physical robot there you go so it's good to give to like i don't know you might give this to a young teenager or something like that who's interested in uh doing robots i mean i would have killed for a book like this when i was a kid but then again we didn't have like raspberry pies and stuff like that back then it would have just been like a a line following robot with a couple of uh transistors in there as a you know and a uh photo a cell and that's you know like that's about as advanced as robots got when i was a kid yeah lots of stuff in here programming wiring up sensors so it really is yeah it's quite a big book it's actually uh lots of step by step looking inside servos so that's really good absolute and relative positions counting oh we're getting into pids now are we correcting veer with a pid oh yeah okay pid stuff excellent i don't think they go into yeah they don't go into heavy detail on that it's like just using uh pid programming modules or in program modules or whatever to do the job which is fine you know you don't necessarily know have to know the intricate details of how to write you know pid loops and stuff like that you can just you know use pre-written modules magnetometer stuff all that sort of stuff so as you can see yep it's actually quite a thick book we're talking like 550 odd pages of robotic goodness linkedin down below check it out finally we've got one from the united states of america thank you march robert alexander uh from northwood um nh where's nh uh uh new hampshire i think i need to check yeah i think i'm right so this is a homemade something or other which could be interesting most people don't home make one of these things um they normally just buy them all right what do we got got a note real oh wow wow i've gone to a bit of effort even got like a silicon rubber i'm out of thing um it's no it's not as advertised on the box it was supposed to be homemade multimeter but obviously that's more than a multimeter uh well it does multi staff so i guess it's a multimeter who says a multimeter has to mess your electrical stuff this does utility tbid whatever that is logic logic analyzer gps simulator servo pwm you add in you are there oh look at that you aren't in you are it's a like a special purpose so like you know there's your pwm and it's got like a graphic representation of the a pwm signal showing you the duty cycle and whatnot you aren't in you are out wow gps simulator look it's got a world map on it oh this is terrific it's the bobby desla the first issue is like um there's a four-way pin header on this and it doesn't like there's no key on it so i don't and there's no uh uh plus no be a negative ground okay no this labeled yep there we go that's cool really i mean a homemade special purpose multi-test tool like you know i wouldn't call it a multimeter because that's obvious the obvious connotation is an actual multimeter oh no it's called a logic meter there you go because of the logic means it's sort of a mashup between a logic analyzer and a multimeter the idea is to take certain tools that you might need when developing a microcontroller based system and make them as quickly and to easily make them as quick and easy to use as possible i think this will make a great commercial product but i don't want to do the work i'm hoping someone will see the demo and decide to uh produce it so hey if you're out there and you want to go into partnership with robert bob good on you bob another robert rubbish bob then on if you like this i'm getting contact down below so there's bob's letter uh and yeah i've had it for a while sorry bob there's a lot of stuff that's been sitting on my mailbag bench for a while and as i said he is looking for someone um to if you like this to then um contact bob uh linkedin down below if i got his email address well oh yeah i'll try and include something but um this is one of the coolest things we've gotten on the mailbag it's a do it yourself look we'll switch it on utility connect the usb and we can do help oh can we to be determined in tbt it's literally tbd to be determined unimplemented oh that's great logic analyzer and displays up three digital logic signals and there's the gps simulator so the helps oh yeah it helps very simple oh it didn't switch from gps sim ah is that a bug look if i go help and i switch it ah it doesn't immediately go out of help i did i declare that a bug but you know no wackers you are stuff sbi in you are in and yep i mean we just have to hook it up and pwm this is really cool so yeah period duty cycle so how do we oh yeah arrows okay well oh mr key stroke there yeah you could argue that like this sort of resolution screen's not really needed i mean it's like the fonts like it's really quite small on the screen so i would say that yeah not particularly you can get away with a much uh small although i guess if you've got a lot of data though with uh you know uart and uh you know stuff coming in ascii data and things like that i guess you know yeah the more display real estate uh the better perhaps but uh yeah i like i don't know what to think like i'm not generally a fan of a jack of all trades tool i'm more of a fan of like just specialized you know bits of kit that do that like why have a gps simulator in there like how many people are going to need a gps simulator in a product like this if you're just you know buying it for its uart and pwm and logic analyzer capabilities and stuff like that although once again it's software so it comes for free right but but the good thing is of course is that the uh schematic and source code is all available it's open source hardware so you can go oh i'd really like really like how he's implemented the uh you know the uarts and you know stuff like that then if you just want that and a smaller lcd you could actually just take the existing schematic and design and software and uh just repurpose it into a like a more simple simple specialized uh tool and stuff like that so yeah what have we got on our utility connect the usb to pc for data access oh okay oh i didn't us oh yeah there we go a usb port hacked into the side of the case nice this is classic prototype stuff of course we're going to take it apart and the thing with this sort of stuff is a lot of people don't bother building things into cases anymore you know with the the artifruits and the spark funds and all those uh sort of things they're all just like um everything you buy on tindy they're all like just bare board uh kind of stuff so yep oh there's our big yeah one board that's what i expected big lithium polymer battery in there oh yep stuck down with a bit of silastic and of course that's all you expect is a micro because i haven't looked at the schematic oh i can't even no i can't even read that what's an mz2o4 i don't know aha it's a pick 32 mz2048 they just don't put the 32 on there thank you very much microchip um yes all the microchip fanboys that go wild it's still a very powerful uh micro you know everyone's gone over to the bloody arm micros these days but yep they're good old microchip uh architecture still a winner winner chicken dinner although yes i know pick 32 is mips so yes it should be absolutely trivial to uh take this existing work and then you know adapt it uh for your own use in any way you want on the hardware side of things though it looks like the inputs here just uh straight into the micro here so yeah it's got no uh logic is it that would be 3.3 volts wouldn't it is the pic32 got uh 5 volt logic thresholds don't know do have a genuine bodge wire though gotta have a barge wire on a prototype one of the problems is i have no idea what b a and p means uh beulah bueller i am getting something but the software leaves a lot to be desired it has got auto board rate but i can't seem to ah change stuff clear up that okay 9600 i'm not sure actually what board rate i'm actually generating there we go i am successfully receiving data and it just ended so yeah i'm not actually sure what i'm transmitting uh but it's certainly receiving stuff and if we put it into uart out mode it's just generating ascii here i've got it 9600 board and sure enough bob's your uncle put in single shot capture mode oops the ground's come off let's try that again and start boom there it is starts with space and then it's it's going up in the asciis so there you go if you're interested in all or part of bob's little uh or do-it-all um a kitchen sink a multi-tester thing then check it out down below at galactic galacticstudios.org the logic meter good on you bob hi to all my viewers in japan we don't get many from japan so thank you very much uh keith sear uh let's check it out it's yeah like fourth suck of the sav in the mailbag well in terms of books it's his book but there's something else in here there's a toy as well so let's have a look that's our book this is our toy so a quick look at a book this is a book bonanza learn multi-platform assembly language beginners introduction to assembly language for arm and 68 000 and all the rest of it are sweet z80 85 6502 is this new or is this like just old don't know no yep this is his own book he uh took the plunge and uh it's a publish on demand this is one of these um amazon publish on demand print on demand so if you don't know about that apparently like you upload your uh your manuscript you know you upload your print files for it and they'll only uh print a copy of the book and send it if somebody orders it so if you order one they'll actually print one and they'll send it to you it's like it's very cool i'd love to see their system in in place for actually doing that so that's very cool so a lot of work publishing a book absolutely uh fantastic it's also included in ichigo jam for your amusement it's a japanese why didn't we think of that answer to the raspberry pi okay so it's really okay it's a kit it's a japanese raspberry pi a kind of sort of kit you'd go assemble yourself well oh we've got a build-up version okay okay yeah we've got a build-up version there it is check that out learnasm.net if you want to pick up one of these bad boys first edition 2020 and cover z80 6502 68 000. so if you're into your vintage uh processors and 8086 um that's pretty much uh the first one i started on was 8086 and then i only got into the others later and then for you arm aficionados there you go so you know what is assembly language let's have a look oh i like i'm liking the drawings this is pretty cool yep yep this is nice did uh did keith do the drawings oh a youtube channel as well for video tutorials cool bites and words of long doubles and floats conditional computation comments in direction pointers jumps and branches graphic oh it goes into your graphics stuff you so if you want to do your assembly language like you know any vintage assembly language uh oh talking about the sega mega and master system and stuff like that so looking good this could be a handy little reference 6502 references 68 000 where do we get into the arms i've never done arm assembly language don't know here we go for you arm aficionados hello worlds where to go from from here not a bad reference there you go keith's the creator of uh cheeky accumus it explains what that is in the book um in assembly language and uh i'll link in his youtube channel down below check it out for tutorials and stuff and i just checked out his youtube channel i can't believe he's only got 8 000 subscribers come on let's get him up to at least ten thousand maybe we'll get him to a hundred thousand for the youtube silver award um trust me there's some awesome content over there tutorials retro programming stuff there's just tons of it looks like it's very well done hats off to keith so this is what keith calls the ichigo jam but it's got skyberry jam trademark um skyberry jam there you go it's a yeah it's a japanese little uh computer that um yeah is like based on like 1980s uh computers and stuff like that so it's not up to like a raspberry pi standards and things like that but yeah look it comes in a do-it-yourself kit that could be a this school holidays maybe with the lock down um this could be a sagan assembly kit perhaps aha surface mount micro already pre-programmed presumably and soldered down there that's a bit of a bummer isn't it anyway it's got it's an lpc uh triple one four and uh yeah everything else is basically yes everything's through-hole although they do have like a couple of uh surface mount uh one surface mount uh alternative there and check out the instructions here it's in japanese so it's pretty pretty comprehensive though pretty impressed um that's great i yeah i don't know what i'm reading but of course it's electronics is electronics um what is that is that yeah that's some sort of for loop step instructions programming basic so yeah it's like one of those little basic computers which we've uh built up before sagan enjoyed uh building the last couple that i think and i think he's done at least two of them um so maybe we can build up another one and give it a burl what's uh what's the output uh it just hooks up to usb does it is there a like actual video output don't no i think i found it rca jack there we go surely that's uh yeah composite yeah it's composite video out nice would it be nicer to get like vga output or something so thank you very much keith definitely check out his youtube channel trust me it's a gooden if you want uh programming tutorials and vintage uh programming and gaming stuff wow that's very comprehensive [Music] you

Channel: EEVblog

Views: 41,419

Rating: 4.8913269 out of 5

Keywords: eevblog, video, eric lundgren, big battery, eric lundgren big battery, ChibiAkumas, assembly language, assembly language book, Marvelous Magnetic Machines, Pentesting, penetration testing, hardware penetration testing

Id: Muiwo1Rw4_8

Length: 46min 0sec (2760 seconds)

Published: Tue Jun 29 2021