DFRobot Fermion: I2S MEMS Microphone

Marsoni

M251S

$245.00

Get it in 3 business days with 1 day shipping. Friday, May 29

DFRobot Fermion: I2S MEMS MicrophoneThis digital I2S MEMS Microphone works well with microcontrollers with I2S audio outputs like ESP32. Compared with traditional analog ones, this microphone features low noise, high sensitivity & reliability, and other excellent performances, which make it applicable to projects like voice recognition, recording, AI learning, Bluetooth audio transmission, and so on. This module uses surface mount MEMS I2S microphone sensor with top port, no components

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These pillows might be fine if you need them for a decorative sham, but definitely NOT to sleep on. They are super lumpy and soft, days after taking them out of package. It seems like there are just bunches of cotton strips in a row that are hard to fluff. They are also dark in some areas, so it looks like the pillow is stained, when in fact it's whatever material the stuffing is. I can't return them because they won't fit back in the box. Super disappointing.

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Reviewed in the United States on March 8, 2026

Verified Purchase

Lianay Reyes

Massapequa, US

★★★★★ 5

Comfortable from the first night

Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow

I found them comfortable and with good support for the head and neck. They are wide in size and feel soft when lying down. After several days of use they continue to retain their shape without problem.

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Reviewed in the United States on June 6, 2026

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Tom Armstrong

Boise, US

★★★★★ 4

Not as Firm as I had hoped

Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow

A good pillow. However, there is quite a difference between the manufacturer's and my idea of "medium firmness". I found this pillow much softer than I had anticipated. I'll have to go for firmer for my next purchase.

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Reviewed in the United States on July 28, 2025

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Computerized Nurse

Massapequa, US

★★★★★ 5

I admit when I was wrong.

Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow

3/29/26 - I took the pillows and put them in my dryer on steam refresh for the default 10 minute cycle. OMG - they fluffed up and evened out to be soft and comfortable, no lumps whatsoever. If you like a soft pillow with some support, but not firm support, THIS is what you want. I am truly amazed. ================================================== Previous review---They arrived in a vacuum seal bag. When you cut the bag and they inflate, they inflate lumpy like. Some areas are thick and some have to fill so, not very good. I am going to try washing them and drying them to see if they fluff up better. Will post the results in a day or two.

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Reviewed in the United States on March 24, 2026

Verified Purchase

Phoenix, US

★★★★★ 3

Immediate neck and back pain

Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow

Nice full pillows that holds its shape, BUT was NOT good head and neck support. I noticed an immediate difference. From non existent to growing neck pain in the first night’s use, through the week.

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Reviewed in the United States on May 30, 2026