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CAT # ARD-21 (1 Review) Write a Review

$14.00 each
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Product Description
The Uno R3 board contains everything needed to support the onboard ATmega328 microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. This version of the board has a socketed/replaceable ATmega328 chip (see CAT# ARD-24). Recommended operating voltage, 7-12 Vdc.
Spec sheet available in PDF format.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
(This item was manufactured prior to August 31st, 2018)

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Customer Reviews (1 Review)

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USB Cable Included

Reviewer: from FLAGSTAFF, AZ USA

Not shown in the photos, nor mentioned in the product listing, the UNO ships with a 20" USB Cable. No need to buy one separately, unless you need a longer one of course.

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