PMW3901 Optical Flow Sensor Breakout

Marsoni

M251S

$35.00

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

PMW3901 Optical Flow Sensor BreakoutThe PMW3901 Optical Flow Sensor Breakout is a specialized sensor designed to detect motion of surfaces from approximately 80mm to infinity. Ideal for DIY drone builds, this sensor uses a low resolution camera combined with advanced algorithms to detect motion, making it useful for measuring displacement or drift correction. This breakout board includes two white LEDs for illumination and operates at a frame rate of 121 FPS. It supports SPI interface,

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Product was as described. Works well. I use it for measuring the amount of coffee for my drip coffee maker. I have not done any testing with respect to actual accuracy so cannot comment. But it seems close to the other scale that I have that only measures to the nearest gram. Construction seems good. Nice looking unit.

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Reviewed in the United States on May 12, 2026

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Mark Campbell

Alexandria, US

★★★★★ 4

Nice scale

Color: Black

Works as expected, nice size. Makes a big difference when adjusting espresso extraction. I haven't used the timer. One improvement for my use would be to move the power switch from the back to the front, on the side or on the control panel.

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Reviewed in the United States on May 5, 2026

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Jerry McCamman

New York, US

★★★★★ 5

accurate scale

Color: Black

great product

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Reviewed in the United States on June 1, 2026

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Peter Merritt

Louisville, US

★★★★★ 5

Best Mid Priced Scale on the Market!

Color: Black, Color: Black

Hand down the best prices scale for the price. Excellent ability to precisely dial in pour overs. I’ve been waiting a long time for a scale like this to hit this price point.

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Reviewed in the United States on May 16, 2026