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  • 29/01/2021

    Calculator

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  • 28/10/2021

    These are literally just breakout boards for the CD74HC4067, with a bypass cap close to the power pin, which is a nice addition and ensures much more stable operation than you would get by using your own, which would necessarily be further away. It works very well, but there are a few things to note about the chip that may be relevant depending on what kind of analog signals you're working with. Per the datasheet, there is 0.051% sine wave distortion with a 5V signal level. That may not sound like much, but the sine wave is the easiest test condition possible, so it's likely to be worse with other wave shapes - particularly the square waves seen in digital signals. For audio, 0.051% at 5V works out to be a distortion level of about 2.5mW - consider that a 2.5mW into most headphones would be loud enough to cause permanent hearing damage, these boards are NOT suitable for switching audio sources for, say, a headphone amp. Even for loudspeakers, that level of distortion is going to be audible, especially since power constraints mean you're probably going to be switching at the preamp, not the power amp. This board shines when you have lots of analog sensor sources with small signals that aren't precise enough for a 0.051% difference to matter, just don't expect fantastic performance for audio.

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  • 09/03/2021

    ✅ everything okay

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  • 20/02/2021

    Missing connector pins, but working ok

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  • 30/12/2020

    Very good product.

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  • 30/08/2020

    I haven't tested it yet, but like other products on this site and this Arduino-compatible line of boards, it should work perfectly. I bought a 3 kit because it's a bit cheaper than the drive. One of the modules didn't have the pin rulers, but it's not a problem. I recommend it for the quality of construction and the price.

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  • 14/11/2020

    As described. Arrived in reasonable time.

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  • 26/03/2020

    Works according to spec. no issues.

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  • 25/02/2020

    Received today will be testing soon. Good quality cannot go wrong at that price.

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