Author Topic: EEVblog #251 - Mailbag  (Read 8132 times)

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Offline sacherjj

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EEVblog #251 - Mailbag
« on: March 01, 2012, 05:49:18 pm »
I liked the look of the I2C book.  Looks like you can get a copy from a seller linked to from Amazon for under $40.  Elector is wanting nearly $50 each for the PCBs.   :o   I guess if you are doing all the projects, it isn't too bad.  But this is $140 before parts.  At least shipping for the boards is only $5.  If it were $50 for both boards, I'd buy them today. 

Am I off base?  Is that a reasonable cost for boards that size?  (I'm guessing they are taking the little they make on the book and making it on the boards.)
 

Offline fitter108

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Re: EEVblog #251 - Mailbag
« Reply #1 on: March 01, 2012, 06:42:45 pm »
I personally think the price is very fair for the knowledge you will gain. Just a quick look my opinion is there are about 12 or more projects to build and learn with. I am going to get it .



 

Offline sacherjj

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Re: EEVblog #251 - Mailbag
« Reply #2 on: March 01, 2012, 06:59:28 pm »
I bought the book off of an Amazon reseller.  I'm holding off on the boards until I see the BOM and price for everything.
 

Offline Rutger

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Re: EEVblog #251 - Mailbag
« Reply #3 on: March 01, 2012, 09:31:38 pm »
I have also just ordered the book, but I thought the PCB were included, for $ 40.00 they should be in my opinion. Or make the package deal a bit higher, but $ 100 for the PCB is too much.

Rutger
 

Offline EEVblog

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Re: EEVblog #251 - Mailbag
« Reply #4 on: March 01, 2012, 10:11:02 pm »
Am I off base?  Is that a reasonable cost for boards that size?  (I'm guessing they are taking the little they make on the book and making it on the boards.)

I thought the blank PCB's were a tad pricey.
Such boards would only cost maybe $5ea tops from China.

Dave.
 

Offline McMonster

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Re: EEVblog #251 - Mailbag
« Reply #5 on: March 02, 2012, 12:46:45 am »
I've seen books about ARMs that come with assembled development boards and standalone JTAGs for much lower price (but they're all in Polish with no translations if you're interested ;)). They really need to rethink their marketing, the costs are probably being switched to PCBs for what they think is more profitable.
 

Offline ttp

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Re: EEVblog #251 - Mailbag
« Reply #6 on: March 02, 2012, 03:01:50 am »

I thought the blank PCB's were a tad pricey.
Such boards would only cost maybe $5ea tops from China.

Dave.

Looking at Elektor kits and PCBs its all overpriced in my opinion, haven't bought from them so can't say if quality justifies their prices. Maybe they use EU manufacturers. I remember they have bought Circuit Cellar a couple of years ago, first thing they've done is double the subscription price.

Tom
 

Offline merser

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Re: EEVblog #251 - Mailbag
« Reply #7 on: March 02, 2012, 06:42:21 am »
I also like the look of this book but no way am I willing to part with 100 bucks for bare boards. Does anyone know if there is enough circuit information to build them on a breadboard or perfboards? Cause I think the book looks worth 40 bucks.
 

Offline EEVblog

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Re: EEVblog #251 - Mailbag
« Reply #8 on: March 02, 2012, 07:04:06 am »
I also like the look of this book but no way am I willing to part with 100 bucks for bare boards. Does anyone know if there is enough circuit information to build them on a breadboard or perfboards? Cause I think the book looks worth 40 bucks.

Looks like it does.
Each board seems to have it's own section, with full schematic.

Dave.
 

Offline merser

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Re: EEVblog #251 - Mailbag
« Reply #9 on: March 02, 2012, 10:33:34 am »
Thanks Dave.
 

Offline free_electron

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Re: EEVblog #251 - Mailbag
« Reply #10 on: March 03, 2012, 06:48:17 am »
I also like the look of this book but no way am I willing to part with 100 bucks for bare boards. Does anyone know if there is enough circuit information to build them on a breadboard or perfboards? Cause I think the book looks worth 40 bucks.

Full schematics are given for all projects. There are no secrets. Also the sourcecode for the PIC processor is available.
Each book has a unique code in the backflap that allows you access to the download site.
Additional information such as PDF versions of the BOM can be downloaded there as well.

Building on perfboard is going to be a challenge. Apart from the 24Cxxx EEprom, PCF8563 RTC and the simple A/D D/A like the PCF8591 and the basic I/O with a PCF8574 none of the parts exist in thru-hole version.
The Potmeters, A/D D/A , Tempsensors , Bus multiplexers and advanced i/o cells in the PCA family are SMD only.
Some people may claim it is sad but we have to face the reality that thru-hole is going the way of the vacuum tube and dinosaur... 99% of new IC's released in the last 10 years is SMD only. Time to work on those soldering skills.
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline merser

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Re: EEVblog #251 - Mailbag
« Reply #11 on: March 04, 2012, 04:00:32 am »
Well I've ordered a copy. Just wish I had looked better first. My copy through Amazon cost 46 dollars Aus. And I could be looking at a 1 or 2 month wait.
But I since found this on ebay.
http://www.ebay.com.au/itm/Mastering-I2C-Bus-Vincent-Himpe-BRAND-NEW-/300673473934?pt=AU_Non_Fiction_Books_2&hash=item4601891d8e
Probably best price available at 36 dollars.
 

Online Neilm

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Re: EEVblog #251 - Mailbag
« Reply #12 on: March 04, 2012, 05:24:13 pm »
One advantage of Fahrenheit over the original scale devised by Anders Celsius is that the smaller the number, the colder the temperature. The original Celsius scale had 0 as the boiling point and 100 as the freezing point

Neil
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe. - Albert Einstein
 

Offline robrenz

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Re: EEVblog #251 - Mailbag
« Reply #13 on: March 04, 2012, 05:28:55 pm »
One advantage of Fahrenheit over the original scale devised by Anders Celsius is that the smaller the number, the colder the temperature. The original Celsius scale had 0 as the boiling point and 100 as the freezing point

Neil

What did i mis? ???

Online Neilm

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Re: EEVblog #251 - Mailbag
« Reply #14 on: March 04, 2012, 07:03:06 pm »
One advantage of Fahrenheit over the original scale devised by Anders Celsius is that the smaller the number, the colder the temperature. The original Celsius scale had 0 as the boiling point and 100 as the freezing point

Neil

What did i mis? ???
Daves comment at 5:38 - "Useless scale - what do you need that for" Answer - shows the correct way up for the temperature scale. (plus it allows me show off some otherwise useless knowledge.)

Neil
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe. - Albert Einstein
 

Offline SeanB

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Re: EEVblog #251 - Mailbag
« Reply #15 on: March 04, 2012, 07:38:17 pm »
Add to that half the specs for airconditioning are in Fahrenheit, and all the pressures are in a mix of imperial and metric units. You also get weights, like a ton of airconditioning, which funny enough, has a mass of 50kg or so.
 

Offline gxti

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Re: EEVblog #251 - Mailbag
« Reply #16 on: March 04, 2012, 10:01:11 pm »
One advantage of Fahrenheit over the original scale devised by Anders Celsius is that the smaller the number, the colder the temperature. The original Celsius scale had 0 as the boiling point and 100 as the freezing point

The inverted scale hasn't been seen since the 1700s. I think we can safely consider it dead.
 

Offline m12lrpv

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Re: EEVblog #251 - Mailbag
« Reply #17 on: March 05, 2012, 04:12:29 am »
I'm hoping to see the nixie kit put together and the circuit being given a going over. From what I understand they take a bit of voltage to get them going so from a beginners perspective that would be an interesting circuit to see.
 

Offline dcel

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Re: EEVblog #251 - Mailbag
« Reply #18 on: March 06, 2012, 11:18:23 pm »
Regarding a "Mailbag" segment, I think its a great idea, I liked it. It gives you a chance to show off the stuff you get in the mail sent to you from others. And it gives you additional content that maybe you haven't though of, which may or may not be of interest to you or others. It introduces a bit of mystery and variety.

I trust you to keep it informative & educational and sort out the BS.

Chris
 

Offline EEVblog

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Re: EEVblog #251 - Mailbag
« Reply #19 on: March 07, 2012, 01:59:57 am »
Regarding a "Mailbag" segment, I think its a great idea, I liked it. It gives you a chance to show off the stuff you get in the mail sent to you from others. And it gives you additional content that maybe you haven't though of, which may or may not be of interest to you or others. It introduces a bit of mystery and variety.

That's the idea.
I've gotten stuff before that's not really appropriate (or interesting enough to a general audience) for it's own "review", or I'm simply not interested in it personally enough to review, but when you bundle them together in an mailbag video it makes it all a lot more palatable and fun for all I think. And it also gives the midnight engineer a chance to show off their product on the blog if they want some exposure.
Although, nothing might turn up, so it could fizzle out  ;D

Dave.
 

Offline SeanB

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Re: EEVblog #251 - Mailbag
« Reply #20 on: March 07, 2012, 08:16:55 pm »
So what do you want?  Was nice seeing the mailbag, could be a good 2 minute video every so often, or a 20 minute omnibus.
 

Offline madworm

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Re: EEVblog #251 - Mailbag
« Reply #21 on: March 14, 2012, 03:48:42 am »
[...]
Although, nothing might turn up, so it could fizzle out  ;D
[...]

Something will turn up, don't worry. Only I don't know if it will be considered as worthy ;-)
Maybe it will serve as an "how not to do it" example...

Unless it gets eaten by our friends in the customs office.
 


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