EEVblog 1403 - Mailbag

Mailbag!

SPOILERS:
00:00 - Eric Lundgren & Big Battery teardown
Big Battery 180Wh pack teardown
13:00 - Workbench of the week, Fabian Schwartau
15:58 - Oleg Kutkov's lab clock distribution amplifier
20:00 - Book: Practical Hardware Pentesting
24:13 - Book: Marvelous Magnetic Machines
27:04 - Book: Learn Robotics Programming
31:00 - Bob Alexander's Open Source Logic meter
39:44 - Learn Multiplatform Assembly Programming + Japanese SkyBerry Jam Computer Kit

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#ElectronicsCreators #Mailbag #BigBattery

[bartomiej]

Thanks to bigclive we know what's inside batteries. It's fire.

[yoksel]

Speaking of Ukraine, Kyiv: whoever watches Dave's videos in Kyiv, who lives on 2nd floor in building #15 on certain street close to city center, are you here? I've heard the sound of Dave's videos multiple times from the window that is next to the upper entrance to the building. Just wanted to say hi.

[tocsals]

24:40 Books are great. Books work when the sun comes up. You can drop them from head height and they still work. I like my old TI reference books.

[getyerspn]

That heat shrunk battery pack including the BMS looks identical to one of my colleagues ebike pack ...he had a cell die ..it's like defusing a bloody bomb replacing a cell in those ...or maybe I'm just a nervous nelly.
That cut off connector would have gone to the charge state LEDs if I remember correctly.
I'm pleased to see a company giving a second Life to li-ion batteries.

Edit
Should have waited a bit longer ..you came to a similar conclusion anyways..

[DavePoo]

13:00 - Turn the screw the opposite direction when re-assembling (until you hear the click), the turn the correct direction and the screw should go back into the same threads that were cut the first time. Ask Fran about this.

[petersage]

"Component quality and consumer protection? We're recycling First-World castoffs for emerging markets - what do you expect?" I especially love the universal death-dapter for the 220V out.

By the way, I think the "pink-y" anodized color is meant to mimic rose gold, which is fairly popular in Indian costume jewelry.

I think Adam Savage would get a lot of mileage out of the Marvelous Magnetic Machines book. Looks right up his alley for his One Day Build series.

[wearethewatt]

Dave! You dont need another tab welding machine, you already got my kWeld - remember? Time to assemble rhat I guess? :-)

[virinom]

Of course it is everyone's favorite segment :)

[rtechlab]

I can't say I'm impressed with that powerbank. Feels a bit Aliexpress. That's a modified sine. Generates hvdc then chops it up. Means smaller, cheaper inverters but... Meh

[johnsonlam]

I love mailbag, finally back in business.

[excitedbox]

The cut off BMC wires are for a display if you are using it as a battery bank.

[morpheas]

I dont even understand more than half of what is said in this channel, but I like the mailbag videos, because I can see Dave's reactions to things he gets, and its always fun :)

[thetechnoshed]

I love Keith’s work. Glad he gets a shout out!

[helgew]

The last zero in the cell designator indicates that it is a cylindrical cell, so it should not be omitted.

[RaySan]

lol...i am waiting for years on you building this tap welding kit somebody send you....it may finally becomes true :D

[nrdesign]

The robotics book actually sounds worth buying! I know some of the stuff already from university, but would love to see it combined into a project

[OlympusHeavyCavalry]

Thanks for the video link about Lundgren, Dave, it was interesting. Cheers :-)

[sneugler]

I recognize that 18650 module from the first battery bank, the whole thing is from one of those BIRD scooters. Those cut off wires are for a battery indicator

[gregorymccoy]

I really like seeing the lab pictures sent in by viewers.

[OneBiOzZ]

We use thermal paste and sil pads
there is a significant difference in performance and i have seen it on a number of SMPSs as well