EEVblog

Thermal powered smartwates are nothing more than gimmicks.

Dave runs the numbers on the Matrix Powerwatch from Indieigogo.

Also some exercise testing shows up an unusual and undesired effect when using thermoelectric generators on your wrist.

Thunderf00t’s video HERE

Bluetooth Power Consumption Application Note HERE

The Peltier effect TEG used in the experiment HERE

The Wurth Energy Harvesting Kit HERE

Forum HERE

Wayback Wednesday PART 2

Are we living in the future as foreseen 30 years ago?

Dave goes back to 1986 and takes a look at the Beyond 2000 books of the TV series of the same name and looks at what has come true and what hasn’t.

What predictions did they get right?

And what technologies turned out to be complete flops?

Forum HERE

Wayback Wednesday

Are we living in the future as foreseen 30 years ago?

Dave goes back to 1986 and takes a look at the Beyond 2000 book of the TV series of the same name and looks at what has come true and what hasn’t.

What predictions did they get right?

And what technologies turned out to be complete flops?

Forum HERE

Dave takes you step-by-step through his video editing, rendering, and transcoding process for an EEVblog video using Sony Vegas / MovieStudio & Handbrake x264.

Note this is NOT a tutorial, it’s a mostly live walkthrough of editing an actual EEVblog video, so lots of waffle.

The gear:

Aless 520USB Studio Monitor Speakers

Samson C01U USB Microphone

Samson SR850 Studio Headphones

Forum HERE

A mystery teardown taken from Dave’s mailbag submission shelf.

What will it be?

Forum HERE

Fundamentals Friday

What is a Schmitt trigger and how does it work?

What is hysteresis?

And how do they fix two common problems in electronics, namely slow slew rate signals on CMOS digital chip inputs causing oscillation, and noise on comparator inputs.

The issues are demonstrated first on the breadboard, then the whiteboard explanation, and then the hysteresis fix is added and demonstrated.

And how are Schmitt Triggers physically implemented in CMOS logic?

Forum HERE

How is a double sided plated through hole solder masked and silk screened component olverlay PCB manufactured?

Take a step-by-step tour of a PCB manufactuing plant.

www.pcbzone.net

Forum HERE

Hard electroplated gold card edge connectors VIDEO

Desing for manufacture tutorial VIDEO

DFM Automated PCB Panel Testing VIDEO

Alba PCB Group VIDEO

Eurocircuits VIDEO

More Mailbag Macarism

Forum HERE

Solar Freakin’ Roofs!

How viable is Tesla’s Solar Roof concept?

What did Elon Musk not mention at the product launch?

UPDATE: Yes, the press kit mentions they all have identical looking solar and non-solar tiles to chose from for shaded/inefficent areas.

How efficient are they?

Who much energy is required to manufacture them?

What about optimum angle to the sun?

Energy required for existing roof construction HERE

International Energy Agency on Efficiency HERE

US Government on PV Energy Payback HERE

List of solar single companies that have gone bust HERE

Dow Chemical Solar shingles goes out of business HERE

Solar shingle efficiency HERE

Sun position and angle/elevation calculator HERE

Forum HERE

How did you take “digital” photos in the 1980’s and early 90’s?

With an analog still video camera that stored images on a PAL format 2″ video floppy disks, that’s how!

Enter an age before SD cards, flash memory, JPG files, and USB!

A teardown of a 1991 vintage Canon Ion RC-260 Still Video Camera.

Forum HERE

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