Keyestudio Leonardo R3

Marsoni

M251S

$33.00

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

Keyestudio Leonardo R3keyestudio Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It is an easy to use open source hardware. It has 20 digital input output pins (of which 7 can be used as PWM outputs), 12 analog inputs, a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a

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This is a great shirt. The quality is nice given its price point, making it a solid value. It’s breathable, doesn’t feel overly thick but isn’t paper thin. The material doesn’t feel cheap or look cheap, for that matter. It’s incredibly comfortable, doesn’t shrink and doesn’t fade. I love the way it fits, and overall I enjoyed it so much I ordered one of nearly every color.

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Reviewed in the United States on May 20, 2026