go_fly_law auf eBay

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Standort: USAAngemeldet seit: 10. Sep 2001

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*****- Bewertung vom Käufer.
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Good buyer, prompt payment, valued customer, highly recommended.
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Good buyer, prompt payment, valued customer, highly recommended.
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Thank you very much for your support and purchase, perfect buyer, immediately gave 5 stars positiv feedback, hope to do business with you again！
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Quick response and fast payment. Perfect! THANKS!!

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Rezensionen (10)

Driver Test Module Board 28BYJ-48 Arduino 5V 4Phase Stepper Motor with ULN2003

12. Apr 2016

Got this to experiment. (it does not seem useful)

Here is my experience using this for camera for a battery powered gimbal (for a light weight camcorder). Its steps are smaller than a servo but they are still not ideal for high zoom operation. Unipolar discrete steps are still still too large. Torque improved when driving with two coils at a time, but they were still overwhelmed by my 235g / 8.3 oz. camera. (estimate torque of stepper 500g-cm). The biggest issue I have is the play in the gear drive. When reversing directions, it takes 40-60 steps for the motor to consume the play and affect the position of the shaft. However, keeping positive load mitigates this issue. I have not tried driving these with over 5 volts yet... Note: One of these steppers acted like it had stripped gears. I opened the drive to diagnose the issue. The gears had no problems and the motor worked fine when I reassembled the gearbox. Previous Review: The driver is simple and just isolates the digital input from the motor circuit. You set voltages of each of the 4 coils. It is geared down so it is slow (maybe 3 rpm at max pulse rate). The only benefit I can see over a servo is accuracy. However, it is easy to make this motor miss steps by stopping the shaft with fingers. I will not get more. I will probably get geared standard motors (and add feedback sensors) to control duct baffles.

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Metal Desoldering Pump Sucker Solder Irons Removal Remover Tool Blue Silver BUY

05. Jan 2017

It does remove some solder, but ...

It does remove some solder, but the tip is too fat and melts too easily. It is not very precise.

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Paititi String Steel Core Beginner Level String Set 16.5 Inch Viola High Quality

15. Mär 2016

They are cheap for a reason.

The strings are too thin for a big viola. My original A string was thicker than the D string in this set. The D string broke right right after I installed it. It was an experiment that failed, and a waste of $7

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