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Csak az Ön országából származó vélemények (Hungary)
  • 08/04/2019

    They do their job. HV to LV conversion is done with a resistor ladder, so the ratio is fixed. Used with I2C bus, WS2812 LEDs and TM1637 7-digit controller. Poor pin headers, they don't want to slide in my protoboard!

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  • 24/06/2018

    It can be very usefull!

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  • fabVIP3
    FR
    10/11/2018

    Module bien pratique pour la communication entre produit 3.3v et 5v.

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  • 14/03/2018

    Good product, well done, really handful

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  • 04/03/2021

    még nem tesztelt, szép csomagolás és gyors szállítás

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  • 16/07/2020

    Good module.

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  • 16/03/2018

    It was my intention to "shift level" between the at 3.3 V operating Raspberry Zero, and a 16x2 LCD display with an i2C interface as daughter board, operating at 5 V. It does not work. Analysis as follows, first a test without level shifter: connected to the Raspberry, but using 3.3 volt instead of 5 volt for the display, everything works fine. (But due to 3.3 V the display is faintly lit). So software and hardware are OK. Now I inserted the level shifter, using both TXDs for SDA and SCL (RXD not used). No way, does not work. When I now made a shortage between TXD-L and TXD-H for SCL, the display works. When I swap SDA and SCL at the level shifter I get the same result: just after shortage of TXD-L and TXD-H for SCL the display works. As SDA requires a 2 direction connection, we can now say that the level shifter works OK, but it obviously is unable to transfer the clock signal. (Only a one way direction connection is required for the clock). I checked another level shifter (same type), and another i2c display, but it yielded the same result. My conclusion: this level shifter may be a good product, but is some manner it is not appropriate as interface between a Raspberry at 3.3 V and an I2C display at 5 V!

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  • 15/01/2016

    The most of arduino (original and compatible) have a 5 V logic level, and the most of gps /gprs and gyro / acceleromets have a 3.3 V logic. To connect them the you have to use the converter .

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  • 16/01/2020

    Хороший товар

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  • 13/12/2019

    Its not I2C but serial, but I knew it and its what I need

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