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  • 05/02/2019

    Ótimo produto, qualidade e bom preço..!!!

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  • 05/04/2018

    good quality step up usb convertor for diy projects must buy. came with nice packaging.

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  • 05/01/2016

    The product is very good, I am satisfied with the price and the quality is adequate.

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  • 31/05/2019

    Got the three pieces, to be tested!

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  • 12/01/2019

    Soldering is good

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  • 13/08/2020

    価格のための素晴らしい価値。 予想通りだ。

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  • 09/09/2015

    Works fine at standard 5v. It is also a fine module for output up to 12v (I personnaly changed R2 - the closest to IN- - to 8200ohm for that). It is also possible to control the booster using pin 4 of the FP6291 chip : just cut the small trace between pin 4 and 5 then wire pin 4 to your controller. Be aware that it does not on/off the output voltage : when the booster is off, the output voltage is the same as the input voltage, minus the drop from the diode. Bottom line : it is a very useable module that is well documented through the FP6291 datasheet.

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  • 27/12/2016

    This is a little module that can be used to construct your own power banks, or anything else working with 5v. Very compact and good price. You must be aware that some devices require surges of power from the power supply, so if you are thinking about using it to avail old batteries, think that your old batteries may not be able do the job. When building your own power banks shoud use only batteries in good healthy condition!

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  • 07/11/2016

    This is a useful little module for constructing your own lithium battery banks, or powering microcontrollers and such at 5v with USB jack removed. Very compact and good price. The board does produce a faint audible buzz under certain power conditions (perhaps due to piezo effect of rapidly switching SMT ceramic capacitor?). And it would be nice if there were mounting holes to firmly affix this to your project, as plug insertion will strain connections, but I recognize that this would necessarily increase the size of this very compact unit. All in all, very happy with these USB 5V step-ups.

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  • 23/01/2016

    I use these to step-up the 5v (approx.) from my video Tx to 12v (requires changing the 20k resistor to approx. 8k). This way I do not get interference from my quads motors and do not have to use a bulky power filter. You also have to remove the USB socket to reduce weight. Cheaper than using Pololu. The 20k resistor to be changed is marked 30C. V = 0.6(1 + 150/8) gives approx. 11.85v.

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