Arduino Mega 2560 R3 (Atmega2560 - assembled)

Arduino Mega 2560 R3 (Atmega2560 - assembled)

Marsoni

M251S

$1072.50

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

Arduino Mega 2560 R3 (Atmega2560 - assembled)The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It features 54 digital input output pins (15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, USB connection, power jack, ICSP header, and a reset button. This board contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC to DC adapter or battery

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Came early,was surprised when I opened it up because it expanded to full size. I ordered a queen size it’s nice, cover is real nice and this pillow is very comfortable for me, I have neck and back problems with alot of pain so sleeping isn’t always easy with this pillow I slept very comfortably. One side is softer and the side that is cooler definitely is cooler when you touch it, reason I took one star off is because it dose get hot the longer you sleep on it. If you want a pillow that is well put together and very comfortable this is the one. I’m happy with it and would buy it again…thinking about getting one for my hubby. This is my honest opinion.

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Reviewed in the United States on July 16, 2025

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Natalie Holloway

Lowell, US

★★★★★ 5

Works great

Works great for my boyfriend. Hasn't complained about getting too hot. He says it is comfortable too.

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Reviewed in the United States on January 9, 2026

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Amazon Customer

Cuba, US

★★★★★ 3

Low firm/supportive

It was good, however It wasn’t firm enough. It’s advertised as supportive so I guess low firm is where it sits in the chart

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Reviewed in the United States on August 14, 2025

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Patricia Hull aka Pattiwitch

Lowell, US

★★★★★ 5

Good for support

Best pillow for mom to keep spine in line helps with pain.

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Reviewed in the United States on April 1, 2026

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Mike

Draper, US

★★★★★ 5

Firm n cool

I am super picky about pillows and I need them firm and cool. This is absolutely amazing. Love it! Better than more expensive pillows I've gotten in the past.

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Reviewed in the United States on December 25, 2025