Arduino sensors from china

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MacIntoshCZ

Active Member
Hi,
do you think those sensors are (or could be) used in industry? I would like to buy some premade sensors boards like "arduino tagged ones" (because i need a lot of them and also i am to lazy...). For example this rain sensor (for my greenhouse project). It costs 0,7$ with shipping. If i look at our market there are only somes made in poland that cost 50$. There are also china resellers that sell those ALI things at tripple prices... Hah funny
I would like to make things at a certain level... Even i make them at a home.
BTW if you know some trusted "arduino tagged" seller can you please reccomend me?
 
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MacIntoshCZ said:
For example this rain sensor (for my greenhouse project). It costs 0,7$ with shipping.
Click to expand...
Not exactly a fully engineered solution.
It is just two circuit boards and a bunch of wires, no environmental protection whatsoever.

MacIntoshCZ said:
If i look at our market there are only somes made in poland that cost 50$.
Click to expand...
What do the ones from Poland look like?
Do they have proper housings/mountings?
Could that be where the extra $49.30 went?

JimB
 
It was probably germany instead of poland ( i cant find it know, but this is 80$) :

Kemo M152K dešťový senzor hotový výrobek 12 V/DC | Conrad Electronic

Koupit Kemo M152K dešťový senzor hotový výrobek 12 V/DC u Conrad Electronic.
www.conrad.cz
I dont think that this has price of 80$ its relaywith schmitt trigger inside plastic case.
Its like monitor stand from apple....
 
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The Kemo sensor is a fully engineered product.
It works by capacitively sensing the presence of water.
The detecting element is not exposed to water.
It has a heater to dry the water detecting surface.
It has a sealed housing.

The Chinese rain sensor is just a bag of bits,
It has exposed metalic sensing elements which resisitively detect the presence of water.
It has no housing, no environmental protection.

MacIntoshCZ said:
do you think those sensors are (or could be) used in industry?
Click to expand...
The Chinese one, no way.
In the days when I was a project engineer, that (and I) would have been laughed out of the door at the first design review.

The Kemo one, yes.
$80 and the sensors are sorted. Easy.

JimB
 
Ok so those arduino kits are just for kids to learn whats going on.
Thanks
 
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