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  • June-07 2017 08:50:13

    Delivery was fast. Great kit considering the price. However, the wheel has been damaged. It is not round but rather oval. There is no way to use it. The DC motor + GearBox is working very well, I did some testing and the response was very good. The encoder hall effect sensors came crooked and leaning against the magnetic disk. However, I was able to push with tweezers and now everything is ok. I did some tests on the oscilloscope and I really liked the result. So I recommend this product. But the

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  • February-08 2019 05:57:43

    Bought 2 of these to build a self-balancing robot. Kit is very nice, but unfortunately quailty is not so good. There is noticable difference in speed between motors, which makes robot turn to one direction. Also gearbox was not lubricated well, but that's easy to fix. Encoder works perfect and is very accurate.

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  • May-17 2019 12:31:41

    I have just recived my motors and every seems great, the delivery was good, only 15 days and I'm in Ensenada, BC, México. I'm going to test it soon in a Robotics Car.

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  • May-23 2020 11:57:20

    The material has arrived, everything is ok. I will do my experiments as soon as possible. Regards

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  • December-29 2020 12:05:48

    とても丁寧な梱包で届きました 一週間程度で届きました

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  • May-22 2016 19:15:14

    Delivery was fine. I bought 2 Kits but some little lacks like: There is a difference on the rotation velocity (at 6V: 208RPM on one Motor, 190RPM on the other). Tested with extra tool for rotation speed. 1 out of 4 hall-sensors don't work correctly (sometimes long-lasting pulse instead of short pulses). The wheels are a little bit wobbling. However it is pretty cheap! Tipp: To calculate RPM with encoder: measure Impulse timings and calculate the impulse frequency. Then devide the frequency by 6.5

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  • June-18 2016 06:04:37

    Received after two weeks. Good quqlity for 3 on 4 motors. One of them needs a current two timeshigher then the others. For this preice, I expected no more then this.

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  • February-14 2017 07:41:08

    Great all in one solution to mismatched motors. The encoders allow you to send a robot in straight lines and receive odometry data.

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  • July-22 2017 08:48:20

    Good item

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  • February-14 2017 07:36:37

    Have ordered a few and like the product although the size of the wheels is inconsistent meaning I now have some mismatched robots.

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