ADS1115 breakout board this cheap?

I first started using this ADC chip because adafruit sells breakout boards. Great little chip!

http://www.adafruit.com/product/1085

Today I was components hunting and came across this exact breakout board:

http://www.banggood.com/CJMCU-ADS1115-16Bit-ADC-Development-Board-Module-p-986645.html

The IC itself will cost the same money even if you buy 100 pcs. Even getting a whole reel won't be that much cheaper.

http://www.mouser.com/ProductDetail/Texas-Instruments/ADS1115IDGST/?qs=sGAEpiMZZMvTvDTV69d2QliEEY3K5%252b4THfLUMCQqMyM%3d

I wonder if the seller is just making minimal profit or there are fake ADS1115 ICs.

Has anyone seen fakes? I did a quick google search for fake ads1115 and saw nothing. I'll probably just get one since it's sooo cheap. Little bugger, difficult to solder. Even reflow was a pain since even a tiny bit more solder will bridge the pins (lead solder). Did about 60 of them on my shields. Next time definitely using lead-free solder paste.

I really don't see the point of this post . Why do you care ? Are you having issues with them ? For a $5 product it seems a waste of time discussing whether it's genuine or not. If you're so worried about it then pay $15 and buy it from Adafruit. I can't believe you're posting on the forum because you are worried about wasting $5.

Well I guess we now know who's in a bad mood.

I have seen many items with similar price differences when comparing sellers like Adafruit and Sparkfun against eBay, Banggood, Aliexpress. I think depending on the item there may be counterfeit parts, ghost shifts, non-compliance with ROHS and other standards, factory seconds, and big volume with small margins per piece. Any combination of those characteristics may lead to these differences in price. My guess is most of it is probably big volume with small margins per piece. For hobby use, some cheap stuff is probably ok. If you have a reason to make sure something is extra reliable, you may have to go with the reputable seller.

It has absolutely notvhinv to do with mood or any mental or emotional state. It has to do with the fact that the price is so trivial it might as well be free. Am I going to spend my time posting on the forum because I might loose the cost of a cup of coffee ? How is it that you don't see that ? If we were talking about gambling $20 or more then it wouldn't be so ludacrous. How in the WORLD could you POSSIBLY even THINK you could get a $15 product for $5 and expect it to be genuine ? Of course it's fake. Did you just fall off the turnip truck ?

raschemmel: It has absolutely notvhinv to do with mood or any mental or emotional state. It has to do with the fact that the price is so trivial it might as well be free. Am I going to spend my time posting on the forum because I might loose the cost of a cup of coffee ? How is it that you don't see that ? If we were talking about gambling $20 or more then it wouldn't be so ludacrous. How in the WORLD could you POSSIBLY even THINK you could get a $15 product for $5 and expect it to be genuine ? Of course it's fake. Did you just fall off the turnip truck ?

Well, who said that I was going to eventually need exactly one such board? I was asking a valid question. Thanks for letting me know it is of course a fake. I won't confuse your opinion with facts though. You sound like you are just doing your best to piss me off. Take a hike.

dmjlambert: Well I guess we now know who's in a bad mood.

I have seen many items with similar price differences when comparing sellers like Adafruit and Sparkfun against eBay, Banggood, Aliexpress. I think depending on the item there may be counterfeit parts, ghost shifts, non-compliance with ROHS and other standards, factory seconds, and big volume with small margins per piece. Any combination of those characteristics may lead to these differences in price. My guess is most of it is probably big volume with small margins per piece. For hobby use, some cheap stuff is probably ok. If you have a reason to make sure something is extra reliable, you may have to go with the reputable seller.

Yes as I said I'll try one. If it works ok, I need some more for a small project. I'll report back whether it works or not. I guess for $5 a pop, raschemmel prefer insulting me than staying away. Noted.

I guess for $5 a pop, raschemmel prefer insulting me than staying away. Noted.

You'll get over it. It will work. FYI, don't forget to change the software in the ADS115 Library.

 // Adafruit_ADS1115 ads;  /* Use this for the 16-bit version */
Adafruit_ADS1015 ads;     /* Use thi for the 12-bit version */

Note that the ADS1115 is NOT the default mode. You have to uncomment that and comment out the ADS1015 (the 12-bit version)

I won't confuse your opinion with facts though. You sound like you are just doing your best to piss me off. Take a hike.

You're too sensitive. If I was trying to insult you it would be obvious. I answered your question with a rhetorical question. It is up to you how you handle that. My advice. Don't get offended so easily. As I pointed out, the "facts" are that Bangood Electronics is in China. I have bought from them many times and they are a good vendor. The circuit isn't rocket science so it is easy to clone. The most important facts: GENUINE ADAFRUIT

FAKE

If you look at the back side of the board, the genuine says "ADAFRUIT". The FAKE does not. If took me 1 minute to find these photos. So when you think about it, what is the likelyhood that a board sold in china WITHOUT the Adafruit logo, is a genuine Adafruit product ? FYI, I don't know if the chip itself is fake but that's a distinct possibility. The board is obviously fake for the reasons given. So , given the facts presented, was my response such a surprise ?

http://www.ti.com/product/ADS1115?keyMatch=ADS1115IDGST&tisearch=Search-EN-Everything

TI gives the price at $2.30 for 1K units. I bet many of the Chinese mass manufacturers get it less that that. That board and components may add $1 cost to it. I bet this is genuine. The scam, such that it is, is that they are probably diverting it off a contract buy for some product that uses many, many thousands of units of this IC. I get the feeling over in China there are a lot of handshake deals - "Sell me a few hundred of these ICs off a reel for cost and I will do the same for you if you ever need anything", etc.

dmjlambert: Well I guess we now know who's in a bad mood.

He's been like this for a few posts today! Far be it from me to suggest the reason, such as his wife is not amenable at present or such. :roll_eyes:

When citing Banggood product links, one should note that their server is even more grumpy than raschemmel and will only allow you to access it through their site proper. If you have not first searched through their site for it, it gives an error. Good example of a sociopathic website.

He's been like this for a few posts today! Far be it from me to suggest the reason, such as his wife is not amenable at present or such. :roll_eyes:

Ha ha. Funny Paul. ;D

OK thanks for the abundance of answers. I guess you CAN get a good deal with large quantity purchases and some handshaking deals. I was genuinely worried that this may be make IC. As I said, I’ve just ordered one and will write about my experience once I have it.

I don’t think the board is considered FAKE. It’s the same design as adafruit but it bares no adafruit brand. The design is open source, or 15 minutes of work following the spec sheet’s recommendation.

Yes thanks rashemmel. I know about the library changes. I have a custom board for a contract with 4 of these (max you can get with their cleaver 1-pin address). I (they) paid the mouser price for the IC so I was in disbelief when I saw this board. The project I need this for is for teaching so I don’t want to spend $15 if I can spend $5. The quantity I need will depend on funding. I have an open source data logger prototype that can use these boards as add-ons. A year ago when I got one such board from adafruit, there weren’t such “fake” on ebay. Now there are plenty. It’s a wonderful world. Consider my college years only had 80286 and 12-bit ADC boards towards the final project. Now, you turn on this little logger and select the ADC off a menu, then numbers come up!

What is your definition of "fake" if it isn't 'clone' ? You should google "superfast analog binlogger" 40000 sps

raschemmel: What is your definition of "fake" if it isn't 'clone' ?

For me, a fake is something that has a different face value and actual value. Say you have a rolex watch and one that looks the same as rolex on the outside but is not made by rolex. It usually has lower quality than the original or no functionality at all. A knockoff would be close to fake on my dictionary but could also had the confusing look such as a bolex watch that kind of look like a rolex if you don't inspect carefully. But a clone would be functionally identical to the original but has identifiable differences only on the superficial level. So if another watch company makes a seagull brand watch and the design and part quality is about identical to the rolex, with its own brand name and maybe slightly different superficial look, not to confuse itself with rolex watch, I call that a clone.

So if I apply that said logic to open source electronics, a fake will claim it's from adafruit but actually not from it, or claims to have ads1115 on it but doesn't. A clone is what I call this banggood board. It has identical design (hopefully the IC is real), then it is advertised as something other than adafruit board. I'm ok with clones but don't like fakes.

I do buy fake Arduinos since I rather not hand money to dog hunter AG for their "genuine" boards.

As an afterthought, I should probably have used the apple][ analogy for a better fit.

Bangood sells good stuff. It may be a clone or it may be a fake but if it's a fake ,it's going to be a good one and you won't be able to tell. With expensive enough test equipment, you may be able to tell but I doubt you will see any performance difference between your genuine and your clone/fake, simply because it's sold by Bangood.

I do buy fake Arduinos since I rather not hand money to dog hunter AG for their "genuine" boards.

I paid about $10 for a genuine Pro-Mini from Mouser and $2.50 for a clone ($3 with 7 day shipping). Do the math.

Mouser only sells dog hunter AG Arduino boards. I got a few thinking they were genuine. Had to return them all. I don't even mention their actually registered name since that is not what they are. I admit that I can't do the math when say a MEGA2560 IC costs over $10 with large quantity and a clone mega2560 dev board costs $8.8. :confused:

That says it all.

raschemmel: That says it all.

Not all for me. If I buy a $20 MEGA2560, do I expect some fake $8 MEGA2560 with jacked-up price or an actually working one worthy of the extra dollar? I used to get MEGA2560 for less than $30 and now I don't know how much I should pay for them. $8 and pray or $20 and still get the $8-inside? :o

Can you tell the difference based on performance alone if you ignore the visual appearance ?

Not at all. I wish to see genuine Arduino MEGA2560 soon. I'll buy one or two. The rest is hard to tell which is good or not.

I suggest go to Micro Center and get your Inland Mega2560. Good quality. $9.99. The ATmega chip itself on any board you buy is unlikely to be counterfeit, as something that complex would be difficult to mimic. There is a slight chance you could get a factory second or ghost shift ATmega chip on a board from eBay, but I think that is unlikely on a board produced by the thousands like they do for Inland. I don't think you would get a better board for $20, or $30. Perhaps not even the official one with Genuino markings from Adafruit at $45.95. I suggest if you are going to get a genuine, order from Adafruit to get it straight from the manufacturer. That way you'll know for a fact it is genuine.