The Arduino microcontroller lets you build amazing electronics projects and prototypes. Right now, you can save on Arduino hardware and learning at 9to5Toys Specials.

The SainSmart UNO for Arduino blends powerful features and familiar software for $54 (Orig. $67). Based on the ATmega328, this tiny board can connect wirelessly to other smart devices via ZigBee. You can also use it to create a network stack, and connect the UNO to sensors and servos.

A slightly easier starting point is the SainSmart 4WD Robot Car, which is now $78 (Orig. $96). This fun kit lets you create your own robot with the MEGA 2560 microcontroller board. It comes with a 4WD aluminum platform and all the necessary parts, including the all-important Arduino Sensor Shield.

Want to learn more about Arduino? The Arduino Enthusiast E-Book Bundle offers 8 comprehensive e-books for $10 (Orig. $236). The library covers an array of interesting topics, from wearable devices to the Internet of Things — and there’s more than 1,900 pages to enjoy in total, so start learning.

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