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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.

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.

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.

✅ everything okay

✅ everything okay

✅ everything okay

Missing connector pins, but working ok

Missing connector pins, but working ok

Missing connector pins, but working ok

Very good product.

Very good product.

Very good product.

As described. Arrived in reasonable time.

As described. Arrived in reasonable time.

As described. Arrived in reasonable time.

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.

Ainda não testei, mas à semelhança de outros produtos deste site e desta linha de placas compatíveis com Arduino, deve funcionar perfeitamente. Comprei um kit de 3 porque fica um pouco mais barato do que à unidade. um dos módulos não trazia as réguas de pinos mas não é problemático. Recomendo pela qualidade de construção e pelo preço.

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.

Works according to spec. no issues.

Works according to spec. no issues.

Works according to spec. no issues.

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

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

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