Banggood

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

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.

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.

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

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

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

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.

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

Good item

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