Cratejoy: Discover Unique Subscription Boxes for Every Interest

UNO R3 (Arduino Compatible) Microcontroller

UNO R3 (Arduino Compatible) Microcontroller - Main image
$15.22 $24.95 In stock

UNO R3 (Arduino Compatible) Microcontroller



Unleash your creativity with this versatile open-source board!



• Digital and analog I/O pins


• Compatible with expansion boards


• Perfect for DIY electronics projects


• Ideal for beginners and experts alike



Explore endless possibilities in robotics, automation, and interactive design. Start building your innovative creations today!

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Ellie ★★★★★

I swapped out my old board for this one and instantly noticed how much smoother my code runs with the extra pins for sensors. The compatibility with existing shields means I didn't have to rewire anything, which saved me a ton of time.

Zoe ★★★★★

The I/O pins clicked right into my breadboard project without any fuss. Works perfectly with my existing shield collection for under $15.

Riley ★★★★★

Got mine set up with a motor driver shield and it ran a small robot without a hiccup, the digital pins responding just as fast as I needed them to. For the price, it’s a solid workhorse for any beginner project, though the USB port feels a bit snug when plugging in.