XH2.54-8P 2.54mm 30cm Dupont Wire $0.99, LM317 Regulator $0.99, ATMEGA328 UNO V3.0 $9.00

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ICStation, China

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  OBEY YOUR MASTERS on 21/05/2015 - 14:37

  Pretty sure the LM317 is just a regulator not a DC-DC converter. Just sayin…

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  tlan16 on 21/05/2015 - 16:46

  I bought a motor driver from them before, and It's simply not working. Try to get any help or DATASHEET from them, no response at all

  • 

    Russ on 21/05/2015 - 22:22

    Always pay by Paypal, and communicate with the seller through Paypal's messaging system. Request a refund, putting your concerns in the refund request. If they ignore that, you get your money back, Paypal will enforce it. It may take a month or two, but you'll either get the information or assistance you requested, or you'll get your money back.

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    effgee on 21/05/2015 - 23:13

    Not sure how that justifies a beg in this post. Have you ever successfully used a motor driver from elsewhere? Post a link to what you bought and someone may point you to a datasheet

    • 

      tlan16 on 21/05/2015 - 23:58

      -1

      After that one, I bought another driver from somewhere else, and everything is fine with my robot.

      You can easily find the datasheet for the main chip that used. But all the additional circuitry, they are not able to supply any information about.

      PS: as mentioned by others, LM317 is not a DC-DC convertor, it's just a regulator, which is a huge difference. This suggests one, this is false advertising, can be easily sued, two they have no basic electronic knowledge and they have no idea what they are selling.

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    Store RepICStation @ ICStation, China on 22/05/2015 - 12:21

    I'm so sorry to hear that.
    We used to try our best to solve the issues for our dearest customers.
    Would you have your registered email address, see if we had overlooked your email?
    Thanks!

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  effgee on 21/05/2015 - 23:15

  What the hell is "seckill activity" ?
  Has been mentioned on a previous post from this vendor, means nothing to me.

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    tlan16 on 22/05/2015 - 00:08

    +1

    short version: kill in few seconds

    seckill
    If you are a Chinese girl or Chinese boy and you did not "seckill anything" this summer, you are really out of date.

    The word "seckill" comes from the online game Legends. It is used to describe the strength of a senior warrior named Flaming Sword. He can kill an enemy within a few seconds. It has recently become a popular word used by game players, meaning defeating your enemy in seconds.

    When associated with online shopping, "seckill" refers to the quick sell out of newly-advertised goods. If you look at the transaction record, you will find that each of the transactions is made in seconds. It sounds inconceivable but is the naked truth. This is called "seckill."

    Dozens or hundreds of pieces of clothing are sold out within a few seconds and those who have not obtained a garment feel vexed. "Seckill" is the most popular online shopping method at present. This shopping mode is so named for its speed. Many garments, shoes and bags popular among youngsters are often "seckill" targets. Low prices, fashionable styles and limited editions are often associated with commodities which are "seckilled."
    i seckilled a group buying of rafting.

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      effgee on 23/05/2015 - 17:02

      thanks for the detailed explanation. I've only come across the term from this vendor, seems to be wrongly used here.

      nice lift from http://www.urbandictionary.com/define.php?term=seckill