Hi welcome to the ever popular mail bag segment where I open my mail and well I've got a male Bonanza I've got six items Now as it turns out, I Think somebody has swamped me here I Think these three are from the same person and we've got to check it out. The secret: Australian Military Office It got here. no worries. The Secret: Australian Military Office There we go and this is also from Uh Calon in Hong Kong as well I mean you know I know Hong Kong's a big uh place but yeah, number 68 600 Kon I think it's the same person there you go Electronics Jeff thank you very much Jeff All right, let's have a look here.

Ah, it's a it's a charger. Oh that's right. I think um I think he emailed me about this and wanted me to uh, crack it open and uh, have a look at it so we might very well do that. It is an Australian uh charger doesn't have the new uh insulated thing so technically you wouldn't be able to sell that here.

but uh, cheap and cheerful USB charger there probably from the one hung low Factory so probably built down to the lowest price point. What do we have here? Oh sent me more. What do we got? Hey Lithium ion battery. long lasting, high capacity power.

What am I going to do with that? Thank you very much. Actually might be able to use it for the new uh USB power supply. You'll see a video on that soon I'm sure. Fee: Oh yeah.

okay oh yeah. look Oh, is that a cat? No, don't know I don't know. Yeah, right. nine months warranty.

Wow. You don't see that every day, do you? There we go and that is a Um for a Motorola for Motorola don't have Motorolla phone? What else I'm going to do that. take it apart. Maybe I could, uh uh, decode the cereal.

Um, if it's got one of those um ID chips in it, maybe? eh. Who knows. Next here we go. What do we got? Oh whole bunch of oh little brick little brick converters.

So this is a whole bunch of convery stuff. Definitely ripped off boards. You can see the copper stuck to the uh, the pads stuck to the pins and these are little converters I guess Ksr 3r 33s. Um, but they are they potted I don't know.

they might not be I'll try and crack one of those open with the knife and uh, see what's inside? Look like I can see a PCB in there? Yeah yeah, we got the board. There you go, not potted at all or actually hang on? No, yep, there we go. Got it. And there it is.

It's an Mp237 I think it is so we'll have to look that one up and this looks like it's just got some Gunk on the top of that inductor there. No point taking it off, but uh yeah, nothing fancy there at all. boring his Bat sheet I'm afraid and I just checked that. uh MP 2307 is a monolithic uh power converters step down converter.

nothing uh, fancy at all. You know, uh, 90 something per uh efficiency or Peak efficiency? Um, you know, down to it can have 0.9 volts to 20 something odd volts output and well, it's not exciting at all. um I think Jeff was it? um I think he mentioned he wanted me to uh, test these on the dummy low. but um, quite frankly H couldn't be bothered.

And here's the power adapter 5 volts, 1 amp so it's a 5vt uh Universal input 100 to 240 vol made in China power adapter woohoo should be a real treat inside. So what I'm going to do with this crappy adapter? I will just leave it for a uh, future tear down because I predict this is going to be one steaming pile of dog turd so we'll leave that I think it probably deserves its own uh episode with uh, a decent analysis of it and a bit of reverse engineering and testing perhaps. So um, yeah, I'm not going to bother with these. So yeah, thank you very much Jeff and let's go on more mail.

but I have taken apart this battery though and I just snipped off this plastic surround and TDA it looks like we have some protection circuitry in there now. Somewhat surprisingly, this actually looks quite decent. It looks like it's got, uh, at least a couple of devices on there, so a couple of the probably a couple of mosfets and a controller in there would be my guess. and uh, so it's quite surprised in this Fa battery.

There we go. TDA Let's have a look at what we got here and I'm looking through my beautiful mantis Elite microscope here. It's really a gem. It does work.

It's some sometimes a bit tricky to get on video here, but there you go. There's a 8 Pin device and 8230 C uh little bit hard to Google that one but I came up with an IR uh H 8230 C 9.4 amp 200 vol.5 ohm in Channel mosfet and that's exactly what I expected in there. and there's a six pin so 23 can't really read the markings on that and even if I did, it probably wouldn't tell us much. Um, it' be very difficult to find out what that device is and this one here.

we'll have to flip it around but it's an 8205a and I googled that and what popped up was a SEO brand. uh, battery management? um IC and I thought oh Bingo got it? Um, you know it's a multicell. Uh, battery protection? uh chip that you know detects over charge and over discharge and all that sort of stuff. Um, but it's not the same because it is.

That was a 16 pin package and this one is only a little8 pin package. So um anyway uh, something's wrong there I Reckon we've got a little six pin controller. two uh, different mosfets. This one's an N Channel this one would be a p Channel mosfet and uh, they've You know they've done a decent job there.

that is, uh, a proper battery protection board. So there you go. the F battery. um, actually has decent protection building.

go figure. I'm as surprised as you are now. Next one here is from Russia Hi to all my viewers in Russia this is awesome and uh, it comes from male I won't even try and pronounce that last name but uh, thank you very much M Very good. uh Russian name there from Moscow with a K Is that how people from Moscow spell Moscow in English I don't know.

Interesting and uh, down here he's put it to Australia and then I presume that is Russian for Australia I can only presume. Excellent. Didn't know that stamps. Check it out.

There's uh Russia 2009 I Have no idea what it says up the top, but there's obviously some sort of uh doed, uh, sort of, you know, building there with a dome on it looks pretty important somewhere in Russia presumably. So cool. Thank you very much. Let's open it up and have a look.

All right. Have we had something from Russia before? I Don't think so. by the way. Um I do like postcards.

So if you want to send in postcards by all means, send me postcards. It's flat so this is going to be interesting. What do we got here? Hello Martini Gold. A new taste? What? What have we got here? I should read the note.

Let's read the note first. Hang on. No there. Oh yes there is here we go.

Tada Hello there from Soviet Russia this is M from Zepto Bar. there you go. check them out. I am working on my own microcontroller but there is still a long way till I would have pre-production chips for you.

So this time I am sending multimedia package from special edition of Playboy magazine so you can tear it down right now. by the way, it Geeks found out how to flush working Linux there. So when this magazine came out Geeks were buying all out special Playboys across the mosow. sellers were probably slightly surprised.

Oh boy oh dear oh dear oh dear. let's have a look. What is this? Oh oh it's one of these electronic cards. It's playing.

Uh uh oh right. yeah. I don't think we should play this any further. I'm a bit concerned.

this is awesome. This is like a fullon video card. Sorry about the reflection there. Well I'm not.

Well, my fears were unfounded. This is like literally just an ad. It's a multimedia ad which they put inside the Playboy magazine too. and it's got a build-in graphic screen and everything.

Hey, it's reflective. You can see me and that's just incredible. the circuit borders underneath here and uh, we're kind of have have to tear this thing down I that that has got tear down Tuesday written all over it. so I'm going to save that.

thank you very much. M I'm going to save that for a tear down Tuesday Definitely don't want to waste that on a mailbag. That's just freaking awesome. All right.

Jeez, All this stuff to tear down. Oh man. I wish I could do it on the mail bag, but really, we don't have time. I Got to get uh through the mail here and if you want to send me stuff, send it to that crazy Aussie bloke Pier Box 7949 Borham Hills BC New South Wales 2153 Australia not Austria This one doesn't need Australia on it because it's Australia Post there it is comes from Australia so looks like it comes from dandong in Victoria excellent and uh, no name.

There you go, nothing. so let's rip it open. They've got one of these lift and pull tabs t What? Oh god, a whole bunch of stuff in here. What do we got? Man looks like there's no, is there a note? hi Dave just stuffed.

that may be of use Parts Cool. Still no name. that's awesome. just random stuff.

All right. random boards. thank you very much. Oh big Spartan device on there.

We'll have a look at these so let's open them up. They're random. What are they? okay? there. some sort of plug-in modu thing and uh, just wa, that's a big BGA and yeah, lots of random modules from something he doesn't say.

We've got uh, some memory memory and some plug-in boards and this one's from Cisco Systems Copyright 2000 It's reasonably old, so some sort of Cisco network type controller. We got a massive BGA here. We've got a Plcc up here, a couple of uh, large pin count quad flat packs, and zyink, uh, what's that? It's a Xcv 50, and a couple of unpopulated footprints here, presumably some sort of memory some DC to DC converter stuff down here, and it's designed to plug into something. so it's maybe some sort of add-on board or controller board.

and the main device is a connectent and I hadn't heard of them before, but uh, Google them. And they're a spin-off of, uh, the old Rockwell uh group apparently. So um, yeah, they do. Uh, you know custom uh LSI devices like this, um, audio, uh, video and you know, compression and all that sort of uh stuff.

So you know it's some sort of, uh, it's an edge stream. It's a VP uh 224a and if you Google that, you just get a whole bunch of those you know online. Asian Chinese Suppliers: There's no data sheets, no, nothing that I could easily find. So there you go.

and uh, these other boards. Um, I'm not sure what they're actually. uh, out of some sort of Cisco Systems thing, but uh, these might be useful for uh I don't know, scrapping some parts out of or something like that. Not terribly exciting I'm not, uh, going to go into it too much.

Some sort of controller? E1 uh, controller? yeah, a network E1 network connection? Something like that, perhaps? I'm I'm not sure. not really up on all that sort of stuff. Thank you very much Anonymous person for sending in some random boards and the last one for today is is a box I Love boxes like this. Beautiful doesn't fit in my PO Box though.

So I get a little card and I've got to go to the counter and actually pick the thing up. Um, and it's from the United States of America from Steven Gant thank you very much Steven he's from K's bad in California I've been to Kbad and um, uh, they've got a pretty horrible Rocky Beach there from what I remember and I got food poisoning at the K's bad Hilton Hotel that ruined my entire trip to the US knocked me out for 2 weeks bloody Hilton hotel I think it was a dodgy chicken. So anyway, let's open this sucker up and uh so thank you very much Steven he uh I never got to the uh Lego world I think there's Legoland in uh CO's bad in uh California never got there I started my road trip from Uh K's bad and I went all the way up to uh uh all the way up to Silicon Valley so up uh Highway one t here we go we have a letter hi Dave saw your male saying we bit of Skydive gear to control your camera So as with my Aad was just reached the end of his life I decided to send it to you. it's an Aad of course.

It will probably continue to work for some time. Older designs use gas fied tubes, mechanical gain, and Springs to move the reserve parachute release pin h Interesting, An example is the Fxc model 12,000 12,000 God The modern Aad device, such as the Cyprus cybernetic parachute release system cool, uses an Mpu and electrical charge to fire a cutting blade to cut the reserve parachute pin. Loop This releases the Sprint loaded pilot shoot that attracts extracts the reserve. Wow! I thought I had no idea I I'm not into uh, skydiving I you know I'd much rather fly the perfectly usable plane than jump out of it.

but I can certainly appreciate it. Um and I had no idea that there were Electronics or mechanical things controlling the reserve parachute pin I just thought it was a you know? well I thought there was just a manual pin which you just pulled out and your reserve shoot came out. Seems to be more complex than that. Maybe I can take it apart, look for a manual on the internet.

cool and in there? No, that's it. This is the Uh box from Digi Key. of course this is the famous Digi key. uh Shredded material and anyway, lots of static there when you pull off sticky tape from this.

So once again I've got another tear down. Tuesday item I'm not going to do it on the mail bag. God Anyway, this is jeez. that's that's pretty heavy part of the heavy part of the kit.

So I assume we got to find a manual. so that's some sort of. that's some sort of pin. It's got some wires going to it and there's a button right? wrong little dude with his uh, little parachutist dude there with his hat on.

Brilliant right or wrong? Yeah, well. some people say jumping out of the plane is wrong, but uh. I'll do it one day, be fun and uh Cyprus there you go. Made in Germany Hi to all my German viewers.

Brilliant! We'll have to look up the Uh manual for that one. manufactured 7th month 99 so it uh is recently old but there you go it. It will certainly be worth a tear down. Okay, let's try and get this thing to do something.

I'll follow Steven's instructions in here. Click the button when it red Le lights there we go. Press it again. No yeah, press it again.

Three four and we got a countdown. Look at that and what happens does something here. It cuts, the something activates presume like there's a cutter in there that I assume your cord, you shoot, your cord goes through that and uh, it actually cuts it I presume That's what Steven's implying here. releases it cuts F a cutting LA to cut the reserve parachute pin Loop A What Terribly disappointing.

A What? Well, I've downloaded the user guide for this thing, so let's take a look at it and here it is: Design Philosophy: The Cyprus device Cyprus, which is the acronym for Cybernetic parachute release system is an automatic activation device which meets all the needs and wishes of today's Skydivers. Once it's installed, you can't hear it, you can't feel it, and you can't see it. Aha operation is quite simple. Just switch it on in the morning prior to the first jump, and then forget about it.

It's not necessary to switch it off. do it itself. The weather is constantly checked by Cypess over the day, measuring the air pressure twice a minute. This means that the unit is always calibrated to the precise ground level.

Well, you'd hope so. it's an emergency activation device that activates your reserve shoot, presumably just before you go. Splat So, uh, Expert Cypress is designed in such a way that won't restrict a sky diver in any way. Even with extreme Maneuvers during exit and in free four, it'll cope with it.

What? Whatever you can think of under canopy like stalls, spiral, turns, down planes. oh these all sound fun. Excellent. It won't interfere with any normal activities.

Only freefall. Here we go. Only freeall in very low altitude will cause the Cypress to take action in this sit situation. Cypress will activate the reserve approximately 4.5 seconds prior to impact.

1, 2, 3, 4 Splat Well jeez, that's not much time I don't know how what? uh how many feet that is They they always work in feet I think these skydivers do they? I'm not sure. is that the uh deao standard unit? So yeah, 4 and a half seconds jeez before you hit the uh the the ground and go Splat that's uh, not much margin for error there, so you'd want to be pretty confident that this thing is, uh uh, you know is actually calibrated. So jeez. I 4 and a half seconds.

And here we go. Here's the tech specs for this thing. It's uh I I think this is the model I've got I don't know it might be a newer one but I I think it's pretty identical. Uh, working temperature range here up plus 63 to -2 C grade.

Of course you know you're up high. it's it can get pretty cold up there so this thing is going to be designed really well. Ultra high reliability unit so this will make for an interesting uh, tear down. It's completely waterproof.

uh to 1.5 uh M as well. Battery life is 500 jumps approximately 2 years I would presume that uh, it has like a Lithium primary battery in there. That would uh, be my assumption and you got to change it every couple of years and it functions for 14 hours and then switches off because all it's got to do is read the sensors and things like that and uh, you know, measure the altitude uh, sensor and the speed um, sensor and uh or if it's the same uh thing and it gets a rate of change. And once you hit, if you're going fast at, where is it, let's have a look down here.

It activates activation altitude. There we go approximately 225 M or 750 ft. So if you get to that altitude and you're still going at greater than or equal to 13 m/s or 29 mph bang, it's going to it. You know it knows you're about to go.

Splat and I guess it doesn't want to kill itself either. So uh, it's going to activate the reserve shoot. Geez, if you haven't done that already, of course. So this is like an emergency backup thing so it will actually cut that cord and activate your reserve shoot and hopefully I don't know.

Can any skyd out? Maybe Steven can tell us you know? Can you stop in 750 ft like with your reserve shoot which is smaller normal I believe I Guess you can. There you go. So this will actually be interesting cuz it's got an operational life here of total lifetime of 12 Years from date of manufacturer plus 3 months maximum. Um so that it's designed for a 12E operational life you know or three or four battery changes or something like that.

So this be really high quality construction in here you know, vibration proof, shock proof, you know all sorts of you know designed for extreme temperature ranges and so it'll be a make her a really interesting tear down. Can't wait tear down Tuesday material definitely thank you very much Steven from CO's bed anyway that's the mailbag all done and dusted. got man more tear down Tuesday items then I can poke a stick out. Hope you liked it.

Catch you next time.