Author Topic: EEVblog #787 - Mailbag  (Read 20108 times)

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Offline teerosheyal

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Re: EEVblog #787 - Mailbag
« Reply #25 on: August 26, 2015, 08:04:05 am »
In 42:08
Quote
...So Dave from gooligum electronics, Yes because everybody in Australia is called Dave...
And i thought that everybody in Australia is called Bruce...

 

Offline maartenva

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Re: EEVblog #787 - Mailbag
« Reply #26 on: August 26, 2015, 09:38:23 am »
If you want to translate the chinese manual, you can you use the google translate app on an android Phone.
You can take a picture and it translate it for you to any language.

https://play.google.com/store/apps/details?id=com.google.android.apps.translate&hl=en


Greetings from Belgium
Maarten
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #27 on: August 26, 2015, 10:38:14 am »
You just got me to order a FX 991ex on eBay. It got my attention on looks then hooked me by being able to do binary and hexadecimal calculations and conversions.
Can't you do those in your head? I dunno, youngsters today...

I noticed there's an FX 991ex emulator you can download on the CASIO web site. I though I'd have a play around with it before deciding if I want one but I failed to get past their incredible software licensing system.

I don't seem to have a "claim code". Do you have to actually buy a calculator to get one of those and be able to install the 90-day trial of the emulator?

 

Offline ornea

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Re: EEVblog #787 - Mailbag
« Reply #28 on: August 26, 2015, 10:41:13 am »
Very sexy shirtless flash-frame at around 9:20.  :P

I noticed that too... Some kind of bizarre subliminal message?

Maybe one leftover frame from a scene that he decided to take out?

Any explanation Dave?  :-DD

ha ha.... awesome and juvenile
Impressed 1/25 sec ... I didnt even notice the shirt change
 

Offline ornea

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Re: EEVblog #787 - Mailbag
« Reply #29 on: August 26, 2015, 10:47:36 am »
Calculator came in the mail. Belongs in the mailbag. :-+
 

Offline Christe4nM

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Re: EEVblog #787 - Mailbag
« Reply #30 on: August 26, 2015, 10:58:24 am »
You just got me to order a FX 991ex on eBay. It got my attention on looks then hooked me by being able to do binary and hexadecimal calculations and conversions.
Can't you do those in your head? I dunno, youngsters today...

I noticed there's an FX 991ex emulator you can download on the CASIO web site. I though I'd have a play around with it before deciding if I want one but I failed to get past their incredible software licensing system.

I don't seem to have a "claim code". Do you have to actually buy a calculator to get one of those and be able to install the 90-day trial of the emulator?
If you mean binary to hex conversions and back, those you can do in your head indeed: peanuts. But I'm not that good when converting say 24 bits binary to decimal ;)

Currently I use the windows calculator for that, but I strongly dislike the lack of a proper physical calculator that you can poke your fingers at.

...and I needed the excuse to buy that nice looking Casio ;)
 

Offline Eliminateur

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Re: EEVblog #787 - Mailbag
« Reply #31 on: August 26, 2015, 12:13:05 pm »
150 bucks for the bowtie?, hell no, funny novelty but not at that price
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #32 on: August 26, 2015, 01:44:01 pm »
I noticed there's an FX 991ex emulator you can download on the CASIO web site. I though I'd have a play around with it before deciding if I want one but I failed to get past their incredible software licensing system.
I figured it out. The trick is to ignore all the on-screen instructions and press 'cancel' when it asks you for the license code.  |O


If you mean binary to hex conversions and back, those you can do in your head indeed: peanuts. But I'm not that good when converting say 24 bits binary to decimal ;) Currently I use the windows calculator for that.
To be fair, that would be one of the reasons I'd buy one, too.

But...I played with the emulator and seems like they managed to make it annoying. Not at all easy to use like Windows calculator.

To convert a number you select your mode, type in a number, press '=', then press a number-base button to convert it. 

Yes, it's only one extra button but why can't I just press the number-base button without typing '=' first, like on Windows calculator? So near, yet so far away... :palm: I guess my venerable HP 20S lives another day.

PS: Yes, the calculator accepts "sin(45" without a closing bracket.

 

Offline SeanB

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Re: EEVblog #787 - Mailbag
« Reply #33 on: August 26, 2015, 06:58:59 pm »
I still use the Fx 602p I had in school, and it is IIRC on the third set of CR2032 cells since it was new. Used to have the companion printer, but that wore out, plus the pens it used were incredibly expensive as a student. Played nice music though through the cassette port.
 

Offline apis

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Re: EEVblog #787 - Mailbag
« Reply #34 on: August 26, 2015, 11:10:31 pm »
I noticed there's an FX 991ex emulator you can download on the CASIO web site. I though I'd have a play around with it before deciding if I want one but I failed to get past their incredible software licensing system.
I figured it out. The trick is to ignore all the on-screen instructions and press 'cancel' when it asks you for the license code.  |O
Thanks! :-+

Have played with the emulator for a while now and the complex number mode is a bit limited, you can't take the square root of complex number for example, can't use complex numbers in matrices and so on. The 5800P looks like it would be more powerful but there is no emulator for it, and it's not perfect either. I might just go with the 991ex anyway, it's nice enough and cheap, for more complicated stuff I'll probably have to switch to the computer anyway.
 

Offline Godzil

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Re: EEVblog #787 - Mailbag
« Reply #35 on: August 27, 2015, 01:31:06 pm »
About the timelapse feature and the SJ4000, I bought one because I need a cam for making timelapse and bougth the non Wifi one because I though it would have the same option as the Wifi one, and I don't really need Wifi for this :palm:

But, in fact the non Wifi is capable to takes timelaps photo, it take them as photo and not as a video, but if you have the correct tools it's not a real problem. So hopefully, with a delay of 5/10 or 20s between each shot, it's possible to do a timelapse with the non Wifi SJ4000 :phew:
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline pickle9000

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Re: EEVblog #787 - Mailbag
« Reply #36 on: August 27, 2015, 02:39:15 pm »
About the timelapse feature and the SJ4000, I bought one because I need a cam for making timelapse and bougth the non Wifi one because I though it would have the same option as the Wifi one, and I don't really need Wifi for this :palm:

But, in fact the non Wifi is capable to takes timelaps photo, it take them as photo and not as a video, but if you have the correct tools it's not a real problem. So hopefully, with a delay of 5/10 or 20s between each shot, it's possible to do a timelapse with the non Wifi SJ4000 :phew:

I know dave has touched on most stuff but I'd like to see the camera / audio gear an a quick overview of a shoot / dub and computer editing session.
 

Offline Harrkev

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Re: EEVblog #787 - Mailbag
« Reply #37 on: August 27, 2015, 04:47:01 pm »
I guess I am Dave approved.

Not with that TI you ain't  :P
Real men use HP calculators.  RPN is for engineers!
 

Offline tjringsmose

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Re: EEVblog #787 - Mailbag
« Reply #38 on: August 27, 2015, 05:59:35 pm »
150 bucks for the bowtie?, hell no, funny novelty but not at that price
I was thinking the same thing. A quick check on digikey says the 67 LEDs are about 7-8USD in total, if you're not that picky. Then theres a weird shape PCB, a ┬ÁC and some difficult mounting, but 150 bucks??

I'll give it a month before this pops up a 20USD including shipping on ebay - sorry to the kickstarters, it's a neato idea, but it's easily duplicable and extremely overpriced.
« Last Edit: August 27, 2015, 06:03:16 pm by tjringsmose »
 

Offline Godzil

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Re: EEVblog #787 - Mailbag
« Reply #39 on: August 28, 2015, 12:32:07 am »
I suspect that the LEDs are Adafruit NeoPixel and they are really cost, 67 LEDs cost much more than US$6-7

Look on digikey: http://www.digikey.co.uk/product-search/en/optoelectronics/led-indication-discrete/524729?k=WS2812B

2.3 each for 10 of them so 67 * 2.3 = $154,1...
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #40 on: August 28, 2015, 02:58:30 am »
I suspect that the LEDs are Adafruit NeoPixel and they are really cost, 67 LEDs cost much more than US$6-7

Adafruit neopixel are just WS2812 LEDs.

Look on digikey: http://www.digikey.co.uk/product-search/en/optoelectronics/led-indication-discrete/524729?k=WS2812B

2.3 each for 10 of them so 67 * 2.3 = $154,1...
http://www.ebay.com/itm/261844102963
 

Offline Godzil

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Re: EEVblog #787 - Mailbag
« Reply #41 on: August 28, 2015, 06:51:58 am »
Excuse me, but you but components from dubious origin on eBay for production? I hope your device come with a 5year warranty that cover everything...
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Online coppice

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Re: EEVblog #787 - Mailbag
« Reply #42 on: August 28, 2015, 07:14:16 am »
Excuse me, but you but components from dubious origin on eBay for production? I hope your device come with a 5year warranty that cover everything...
Clearly the most important quality of a throw away novelty item is a 5 year warranty, and not a low price. ;)
 

Offline Godzil

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Re: EEVblog #787 - Mailbag
« Reply #43 on: August 28, 2015, 08:24:13 am »
And even if the eBay cheap version, $1 per LED will be $67. That's still far more than the $6-7 claimed earlier.
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline Votality

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Re: EEVblog #787 - Mailbag
« Reply #44 on: August 28, 2015, 08:24:33 am »
Dave? WTF  :wtf:
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #45 on: August 28, 2015, 09:28:18 am »
Excuse me, but you but components from dubious origin on eBay for production? I hope your device come with a 5year warranty that cover everything...
All the WS2812 LEDs are made by World Semi as far as I know. Adafruit, eBay... all come from the same factory.

http://www.world-semi.com/en/Driver/Lighting/WS2811/WS212B/

Here's Adafruit's datasheet: https://www.adafruit.com/datasheets/WS2812.pdf

What does it say at the top of the page? "World Semi".
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #46 on: August 28, 2015, 09:29:25 am »
And even if the eBay cheap version, $1 per LED will be $67. That's still far more than the $6-7 claimed earlier.
The eBay ones are 10 cents each in quantity. You can probably get them even cheaper if you buy direct.


 

Offline Godzil

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Re: EEVblog #787 - Mailbag
« Reply #47 on: August 28, 2015, 09:51:25 am »
Excuse me, but you but components from dubious origin on eBay for production? I hope your device come with a 5year warranty that cover everything...
All the WS2812 LEDs are made by World Semi as far as I know. Adafruit, eBay... all come from the same factory.

http://www.world-semi.com/en/Driver/Lighting/WS2811/WS212B/

Here's Adafruit's datasheet: https://www.adafruit.com/datasheets/WS2812.pdf

What does it say at the top of the page? "World Semi".

and? The eBay seller tiaochongyi  is not World Semi.

Have you ever heard about fake components, or second hand, or factory rejected chips?

For a small quantity toy, or non professional product, buying on eBay, maybe (even if I will never do that unless that's the only way to buy the component) but for something that have to be manufactured, there is no way to buy from such an unreliable service.

And digikey/mouser are not the cheapest distributors, for sure, but digikey list this component for $2.3/each, mouser they are at $4.03/each when buying, for both sellers, at least 10 of them.

And this eBay guy is able to source them for $2.90 the whole 10 packages (so 0.29/each) ?
Sorry but that look likes too good to be true.
When you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective.
-- Yokoi Gunpei
 

Offline Fungus

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Re: EEVblog #787 - Mailbag
« Reply #48 on: August 28, 2015, 10:08:13 am »
Have you ever heard about fake components, or second hand, or factory rejected chips?
Sure, but google for "fake ws2812" doesn't come up anything.

And this eBay guy is able to source them for $2.90 the whole 10 packages (so 0.29/each) ?
Sorry but that look likes too good to be true.
You might be right if it was only one seller but 20 cents per LED is a fairly typical price for WS2812 LED strips on eBay, and has been for a number of years. In fact you could get the older WS2812A LEDs for that much and they were more expensive (six pins on each LED instead of four)

For raw LEDs in 1000-quantity reels you'd expect it to be cheaper. 10 cents each is perfectly reasonable.
 

Offline Muttley Snickers

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Re: EEVblog #787 - Mailbag
« Reply #49 on: August 28, 2015, 10:27:50 am »
Dave? WTF  :wtf:

Unconfirmed rumour has it that they have added gambling tables to the supporters lounge and a few lost all their chips, others lost a lot more and went home counting their blessings.
 


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