EEVblog

[@EEVblog]

Thanks for the reply. Makes sense. I hadn't looked in to the schematic in detail for the reasons.

[@energymicro]

Regarding the uCurrent: One of our guys had one at home, so we had to hook it up with an EFM32 without anything connected. Worked like a charm! Pictures on facebook.

[@mikeselectricstuff]

The analogue switches will be so it can isolate the JTAG port to avoid phantom powering the device from the JTAG lines. The LC sense will not be for sensing magnetic field but proximity of metal. This can be a cheaper and more robust solution than a reed switch for detection of an external object, especially on a sealed device. You ping the coil and measure the ring-down time - external metal damps it faster. Can also be used as a cheap 2-way data link - again useful on sealed devices.

[@EEVblog]

Excellent feature. Thanks for the response Frank.

[@MrAndlier]

Completely correct about the JTAGswitches. We had trouble with back-powering trough switches and pull-ups etc. Also, the reason for some of the switches being powered by the VMCU rail is to avoid huge leakage to GND when in battery-powered mode. With just a battery inserted, most of the board is powered off, but the efm32 still needs to be isolated properly to avoid back-powering etc, an analog switch without power is leaking a lot of current! -Best regards: EM-employee and kit-designer

[@colt4547]

Good stuff Mr. Jones. I tried to get into the STM32L series (STM32L-Discovery) a little while back. I was so overwhelmed trying to get a counter working I decided to drop back to something simpler (still 32 bit) until my confidence could recover. The Energy Micro Simplicity s/w looked to intuitive that I can't help but think trying one out may be worth my time. Thanks for all of your great videos. Hello Sagan!

[@sayanchx]

Thanks for accepting my request to review the EFM32. Could not have asked for a better review !

[@EEVblog]

Well spotted! Useful for chopping up into test cables!

[@betheer]

i started a small app for it, it's really nice the EP graphs, helping to determine how much the source code can be optimized to achieve truly green results.

[@MrAndlier]

Yes, does in fact have three integrated opamps. One of them can be easily accessed by soldering your passives on the back of the starter kit itself. I think that was shown in the mail-unboxing video a couple of weeks ago.

[@MrAndlier]

True, lower geometries results in more leakage current, but lower switching currents. It's a trade-off between low standby-mode consumption and low active-mode consumption.

[@CampKohler]

Notice that the block diagram shows the number of conductors run to the various parts EXCEPT for six of the parts. Drafting omission?

[@borgazm]

13:45 Try pausing and clicking on one of the the AEM graph spikes. The Profiler is correlating the current measured with your code, so it should bring up the actual line executing at that time. There´s also options to zoom in and set markers so you can measure how long a certain AEM spike lasts etc - quite powerful/oscilloscope style.

[@EEVblog]

The demo kit is only $70 or so, so worth a try.

[@westin1985]

Anyone know how to analyze electronic boards for RF emissions? How is this done by the professionals? Do they have software that aids in the physical layout of of components so that RF emissions can be reduced? Any good books on the subject?

[@MistahHeffo]

My god, that designer application is awesome!

[@ChickenHawk110]

So, please excuse my ignorance, what genuine applications would one use the board for?

[@willworknow]

Too funny...the Steve Irwin of embedded design!!!! This made me smile.

[@joshstube]

19:14 "sniff of an oily rag" Love it!, sent me googling after that one, not used expression here in the U States ;)

[@kl1nk0r]

Is that an Altium USB Cable at 2:50?

[@RandallFlaggNY]

Do we need a DaveCad drawing?

[@allanw]

There's not necessarily benefit in scaling down due to increased leakage power and increased cost. I'm sure the companies designing these microcontrollers have chosen their process technology very carefully.

[@RRak]

Great video, great micro. With such low power consumption it might soon be possible to power such devices straight from wireless signal. As opposed to charging a mobile phone... :D

[@martinsalko1]

this is possibly the most awesome one chip solution, but i have to ask is it worth the price? or would it be better to use a cheaper mcu with sleep/run interrupt? :D

[@kevtris]

it's a shame they tried to "Stylize" the LCD characters which made it quite hard to read vs. the regular 14 segment all caps character set

[@EEVblog]

You're welcome :->

[@Trevs-Shed]

I really liked the look of this one Dave so phoned the 2 companies in the UK that are the stockists. £88.40 including £12 postage. £12 postage they have to be kidding....... Shame, I fancied a little play with one of those. :-(

[@thenaimis]

measures up to 50A? Impressive :-)

[@technobabble_]

Could you show us this thing running like a potato clock? Maybe using a grape or something?

[@obiwanjacobi]

Wow that looks really nice. Thanks for the vid!

[@thenerdyouknowabout]

20nanoamps beautiful!!!

[@BulletMagnet83]

That software looks awesome, it's making me want one :-D

[@EarlRausch]

You guys are all Nerds ! Thank god for Nerds ! Great review Thanks for making life a bit more fun.,

[@gryzman]

£50 quid at Mouser, cheap as chips.

[@rj44319]

I will be looking at these MCU's now really cool stuff

[@azdinator]

That's a good video. That's a really good video.

[@psp10004]

It should be called "Energy Gecko", too many adjectives.

[@ericmin6055]

555 likes in 2k17! 555 timer tutorial?

[@Zwank36]

1:36 hehehe it says pedo.