DX » Community » Reviews » PCF8574 PCF8574T IO Expansion Board/I2C for Raspberry Pi - Blue
Customer’s impression:
Recommended Badly designed card Good IO expander pretty good expansion module
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  • posted byrobcolistete on 04/16/2016

    Pros: WaveShare original product. Very practical to use 8 bit GPIO expander using I2C, for Raspberry Pi, Arduino, etc. The I2C bus is exposed in male and female pins, so other 4-pin I2C boards can be connected in cascade. I2C address is exposed and easy to select. It is also compatible with board... Read more


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  • posted byFelixDiaz on 12/18/2015

    PROS: IO expander using few lines, address changeable, grat current. Vasry usefull CONS: Nothng to say. MAy be it coud have some drill holes to hold it in the final project. The price is good but could be better.

    Impression:Good IO expander;

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  • posted bychaospilot on 09/19/2014

    whenever you need to expansion you also need power and ground. That is not on the expansion connector. If you need an interrupt that has to go to the host interface, not the expansion connector. There is no way to mechanically fix the card, i.e. no mounting holes for screws or sim.

    Impression:Badly designed card;

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  • posted byeduardocfc on 08/26/2014

    Pros: very easy to use. I just connect to raspberry, used the wiring pi libraries and it worked like a charm. You can cascade more modules Cons: missed some way to hold it. It is very small and has no screw holes. But I knew it looking at the pictures. It worth the value, mainly because the pi a... Read more

    Impression:pretty good expansion module;

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