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Topic: Wrobot / Emartee / Ywrobot relay board... (Read 19 times) previous topic - next topic


Sep 16, 2011, 04:12 pm Last Edit: Sep 16, 2011, 04:22 pm by tkbyd Reason: 1
THAT was entertaining... not.

I saw an image of what looked like a nice relay board. On it was "Ywrobot", so I went looking for a supplier.

There IS something on the planet which Google has hardly heard of... "Ywrobot".

In the course of my quest, I came across http://www.emartee.com/  ... who seem to be distributors for a bunch of fun Arduino stuff, includng stuff very like the relay I was interested in... under then name "wrobot". Hadn't heard of Emartee or WRobot (or YwRobot) before. Anyone have experiences, good? bad? Emartee's "about us" says: "We are based in Shenzhen, China where large number of exciting and innovative products are manufactured.  We supply Arduino Series?Arduino Bricks ?Arduino Shields?Arduino Gadgets?Arduino ICs? ARMs?LEDs?LCDs?Wireless Modules ?Sensors?Motors?Cables?etc ." I for one have had very good experiences dealing with such operations, but do not know Emartee, specifically (yet). And if you visit http://www.emartee.com/news/Partners, you will find distributors in many countries... no international shipping hassles... for you. (I have things shipped from China without hassle, but you may not want to take the chance.)

Search eBay for Wrobot, and numerous things turn up, many from http://myworld.ebay.co.uk/emartee2009/, a seller since June 2009, 2000 transactions, 99.7% positive feedback.

Discovered that wrobots.com is probably NOT the source. Their site has goodies, too, over the line "Most of the motors and parts found on this site were pulled from recycling operations. Support recycling!"

http://www.wrobot.com/ (no s) doesn't seem to go anywhere.

My guess at this point? Wrobot is a brand name used by Emartee. The "Ywrobot" on the board, that sent me off on this web-quest was a typo, or a deprecated false start.

As I said... any fans or furious people out there, re Emartee or Wrobot?

Further to the above...

The "About Us" at....


... (where you can buy lots of neat stuff, shipped, I believe, from a distribution point in the US)...

... says....

"YourDuino is the creation of Terry King and Jun Peng. This is a partnership and collaboration between two friends: An old Engineer from the USA, now living in Saudi Arabia, and a young man from China who is contributing his energy and his knowledge of the Chinese markets to bring you interesting, high-quality products at low cost."

Terry often posts in the Arduino.cc forums, and no, I don't know him, he didn't put me up to this!

(arduino-direct.com is the "shop" you can go to from http://yourduino.com/ which has lots of good tutorial material)

Coding Badly

As I said... any fans or furious people out there, re Emartee or Wrobot?

Just one comment.  Looks a bit boot-leggy to me...


Sep 19, 2011, 11:48 am Last Edit: Sep 19, 2011, 11:55 am by terryking228 Reason: 1

I can explain the YwRobot mystery somewhat.  They are a Chinese company that sells mostly to the chinese market. They have some nicely-done products.

I lived in China for 2 years and recently started the online YourDuino.com shop selling low-cost Arduino related things from the huge Shenzhen electronics market (900 shops!!).  There are also hundreds of large and small electronics manufacturers in that area (and huge ones like Foxconn)..

My Chinese friend Peng had difficulty really tracking YwRobot down but finally made contact with them and we are a distributor for their products. I am just evaluating and testing more of them.  You can see the Ywrobot Taobao shop here: http://ywrobot.taobao.com/

The relays are quite nice and high quality. You can see many of them on my site here:  http://goo.gl/8ZEQ8  (short url).. We also have some optically isolated relay boards. They make the relay boards with 1,2,4 and 8 relays. Nice!

BTW these relay have active-low inputs, which could possibly be a startup problem. See my code example here: http://arduino-info.wikispaces.com/ArduinoPower

The electronics scene in China is fascinating and convoluted and difficult to penetrate, even for my knowledgeable Chinese partner. It is easy to get products on Ebay but difficult to get past those middlemen who are protecting their sources. And I am finally getting some technical information about more products as we become more trusted by the Chinese manufacturers.

I'm not making any money on this yet, but my partner is making a living and we believe in the future of Arduino and smart DIY.

I'd appreciate any suggestions for other product people are looking for...

DISCLAIMER: Mentioned stuff from my own shop...

Regards, Terry King
...On the Mediterranean in Italy
Regards, Terry King terry@yourduino.com  - Check great prices, devices and Arduino-related boards at http://YourDuino.com
HOW-TO: http://ArduinoInfo.Info


okay, i just bought one of the relay modules on amazon for 9$ i am wondering what code do i write to make this work? Any help? Thanks in advanced.


Hi, Use the code here to start:

Lots of other relay/power how-to there also...
Regards, Terry King terry@yourduino.com  - Check great prices, devices and Arduino-related boards at http://YourDuino.com
HOW-TO: http://ArduinoInfo.Info

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